subject:( Microbially induced sedimentary structures )

University of Western Ontario

1. Hill, Carolyn M. Sedimentology, Lithostratigraphy and Geochronology of the Paleoproterozoic Gordon Lake Formation, Huronian Supergroup, Ontario, Canada.

Degree: 2019, University of Western Ontario

URL: https://ir.lib.uwo.ca/etd/6084

► The Gordon Lake Formation of the Paleoproterozoic Huronian Supergroup is a primarily-siliciclastic succession ranging from 300 to 1100 m thick. Lithostratigraphic and sedimentological analysis of… (more)

▼ The Gordon Lake Formation of the Paleoproterozoic Huronian Supergroup is a primarily-siliciclastic succession ranging from 300 to 1100 m thick. Lithostratigraphic and sedimentological analysis of the formation in the Bruce Mines and Flack Lake areas, and Killarney and Lady Evelyn-Smoothwater provincial parks revealed 7 lithofacies, which comprise 3 distinct lithofacies associations. The lithofacies associations are subtidal nearshore, subtidal to shallow shelf, and mixed intertidal flat. Microbially-induced sedimentary structures (MISS) related to microbial mat destruction and decay were recognized in the Flack Lake area. The preserved MISS include sand cracks, mat chips, remnant gas domes, and pyrite patches, and iron laminae. A biological origin for the fossil structures is supported by their similarities to modern and ancient documented examples of MISS, the sand-dominated nature of the substrate in which they are preserved, and key microtextures identified in thin section. The identified MISS support the interpretation of a tidal flat depositional environment. The Gordon Lake Formation contains soft-sediment deformation structures (SSDS) in all four study areas. Identified SSDS include load casts, convolute bedding, pseudonodules, ball-and-pillow structures, flame structures, syn-sedimentary faults, and one dewatering pipe. The primary trigger mechanism is interpreted to be storm or tsunami activity, however seismic shock, overloading brought about by density inversions, or a combination of these processes, may have influenced the development of the structures to a lesser degree. Microbial mats may have played a minor role in the formation of the SSDS, but do not appear to have been a prominent driving mechanism. Detrital zircon U-Pb ages from a sandstone provide new evidence for the maximum depositional age of the formation and reinterpretation of the depositional history of the upper Huronian Supergroup. The average age of the youngest zircon grains constrains the age of deposition to sometime after 2315 ± 5 Ma, but prior to intrusion of gabbro (Nipissing) approximately 95 m.y. later.

Subjects/Keywords: Gordon Lake Formation; Paleoproterozoic; shallow marine; microbially induced sedimentary structures (MISS); soft-sedimentary deformation structures (SSDS); U-Pb geochronology; Sedimentology

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APA (6^th Edition):

Hill, C. M. (2019). Sedimentology, Lithostratigraphy and Geochronology of the Paleoproterozoic Gordon Lake Formation, Huronian Supergroup, Ontario, Canada. (Thesis). University of Western Ontario. Retrieved from https://ir.lib.uwo.ca/etd/6084

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Hill, Carolyn M. “Sedimentology, Lithostratigraphy and Geochronology of the Paleoproterozoic Gordon Lake Formation, Huronian Supergroup, Ontario, Canada.” 2019. Thesis, University of Western Ontario. Accessed March 05, 2021. https://ir.lib.uwo.ca/etd/6084.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Hill, Carolyn M. “Sedimentology, Lithostratigraphy and Geochronology of the Paleoproterozoic Gordon Lake Formation, Huronian Supergroup, Ontario, Canada.” 2019. Web. 05 Mar 2021.

Vancouver:

Hill CM. Sedimentology, Lithostratigraphy and Geochronology of the Paleoproterozoic Gordon Lake Formation, Huronian Supergroup, Ontario, Canada. [Internet] [Thesis]. University of Western Ontario; 2019. [cited 2021 Mar 05]. Available from: https://ir.lib.uwo.ca/etd/6084.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Hill CM. Sedimentology, Lithostratigraphy and Geochronology of the Paleoproterozoic Gordon Lake Formation, Huronian Supergroup, Ontario, Canada. [Thesis]. University of Western Ontario; 2019. Available from: https://ir.lib.uwo.ca/etd/6084

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Queens University

2. Chutko, Krystopher John. Sedimentary structural indicators of Arctic terrestrial and aquatic processes .

Degree: Geography, 2008, Queens University

URL: http://hdl.handle.net/1974/1220

► Annually and subannually laminated lacustrine sediments potentially contain a wide range of information that can be interpreted for paleoenvironmental reconstructions. These laminae are produced by… (more)

▼ Annually and subannually laminated lacustrine sediments potentially contain a wide range of information that can be interpreted for paleoenvironmental reconstructions. These laminae are produced by the physical and biological processes that operate in the lake and in the surrounding terrestrial environment. However, identification of the influences that control laminae production may not be straightforward, and other processes may subtly influence the overall depositional sequence. This thesis examines two different depositional environments on Colin Archer Peninsula, Devon Island, Canada, with the objective of identifying the factors that influence subannual sediment deposition and how the resultant sedimentary structures can be used as indicators of paleoenvironmental conditions. In proglacial Lake R, clastic sediment deposition is controlled primarily by subannual meteorological conditions. Periods of positive air temperature or large rainfall events produce discernable laminae that, when combined, form a varve sequence. However, overarching geomorphic controls influence the delivery of sediment to the lake and may reduce or enhance the hydrometeorological signal contained in the varves. An additional influence for calibration of the varve record to meteorological observations is the role that melt season thermal inversions have on temperature extrapolation in the High Arctic. Meteorological stations at sea level may not be representative of the surrounding region, thereby reducing the accuracy of vertical temperature estimation. Investigation of the inversions in the central Canadian High Arctic demonstrated that melt season inversions are common and increased inversion frequency may potentially have influenced enhanced glacial melt since the late 1980s, with implications for proglacial lake sediment transport and deposition. In coastal Lake J, late Holocene sediments record a relatively unusual accumulation of microbially induced sedimentary structures (MISS). Such a record has not been previously described in the circum-Arctic, although they are known to exist elsewhere. These sediments are produced by the interaction between clastic sedimentation and cyanobacterial growth and production. Although chronological constraint could not be assigned with certainty to the record, statistical study of the laminated sequence suggested a dominant pattern that is plausibly annual. A heuristic model of annual sediment accumulation was developed in order to explore the potential for quasi-annual paleoenvironmental interpretations.

Subjects/Keywords: Lacustrine sediment ; Varves ; Microbially induced sedimentary structures ; Arctic ; Thermal inversion ; Subannual laminae

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APA (6^th Edition):

Chutko, K. J. (2008). Sedimentary structural indicators of Arctic terrestrial and aquatic processes . (Thesis). Queens University. Retrieved from http://hdl.handle.net/1974/1220

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Chutko, Krystopher John. “Sedimentary structural indicators of Arctic terrestrial and aquatic processes .” 2008. Thesis, Queens University. Accessed March 05, 2021. http://hdl.handle.net/1974/1220.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Chutko, Krystopher John. “Sedimentary structural indicators of Arctic terrestrial and aquatic processes .” 2008. Web. 05 Mar 2021.

Vancouver:

Chutko KJ. Sedimentary structural indicators of Arctic terrestrial and aquatic processes . [Internet] [Thesis]. Queens University; 2008. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1974/1220.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Chutko KJ. Sedimentary structural indicators of Arctic terrestrial and aquatic processes . [Thesis]. Queens University; 2008. Available from: http://hdl.handle.net/1974/1220

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Montana State University

3. Queirolo, Rosalba. Can quantitative and qualitative deep marine depositional models be reconciled?: a case study of the sites member turbidite sequence, Cortina Formation (Upper Cretaceous), Cache Creek, California.

Degree: MS, College of Letters & Science, 2015, Montana State University

URL: https://scholarworks.montana.edu/xmlui/handle/1/10144

► Two disparate sedimentological and stratigraphic models have been presented for the interpretation of the Upper Cretaceous, Sites Member of the Cortina Formation. This study addresses… (more)

▼ Two disparate sedimentological and stratigraphic models have been presented for the interpretation of the Upper Cretaceous, Sites Member of the Cortina Formation. This study addresses these discrepancies and proposes a unifying model. The first model is a qualitative-based interpretation of depositional environment by Ingersoll (1978), which focuses on analysis of process facies- and sedimentary body-scale attributes. The second model, presented by Murray et al. (1996), is statistically-based and exclusively focuses on sedimentation event-scale attributes. Ingersoll (1978) interpreted the Sites Member as a series of asymmetric, thickening- and coarsening-upward turbidite packages. However, Murray et al. (1996) interpreted the Sites Member to represent a turbidite sequence in which sedimentary event beds thin-upward as commonly as they thicken-upward. In this study the methods and results of Ingersoll (1978) and Murray et al. (1996) were reproduced and an integrated hierarchical stratigraphic framework is presented. One continuous sedimentological section, totaling 223.2 m, of the middle Sites Member was measured along the northern bank of Cache Creek, California, and was used to classify sedimentary process facies, sedimentation events, and sedimentary bodies. A three-fold hierarchical stratigraphic framework was constructed by correlating upsection changes in these sedimentary attributes. Low-order cyclicity, defined by a regional interpretation of depositional environment, shows that the middle Sites Member represents a component of an overall prograding submarine fan system. Intermediate-order cyclicity, defined by changes in subenvironment, shows that the middle Sites Member represents longitudinal oscillations within the unconfined outer fan environment. High-order cyclicity, defined by statistical analysis, is representative of autogenic compensational lobe stacking. If any of these scales of cyclicity are interrogated in isolation, a unique and misrepresentative interpretation is likely. These three orders of cyclicity combine to form an integrated hierarchical stratigraphic framework that resolves the interpretive discrepancies between Ingersoll (1978) and Murray et al. (1996). Additionally, it was determined that at the event bed-scale, multi-scale and coincident, allogenic and autogenic mechanisms are responsible for hierarchical nested cyclicity. Therefore, event bed thickness is an unreliable criterion for interpretation of profile position and for cycle definition. Instead, grain size is a more consistent proxy for profile position and changes in system energy. Advisors/Committee Members: Chairperson, Graduate Committee: James G. Schmitt (advisor).

Subjects/Keywords: Sedimentary structures.; Geology, Stratigraphic.

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Queirolo, R. (2015). Can quantitative and qualitative deep marine depositional models be reconciled?: a case study of the sites member turbidite sequence, Cortina Formation (Upper Cretaceous), Cache Creek, California. (Masters Thesis). Montana State University. Retrieved from https://scholarworks.montana.edu/xmlui/handle/1/10144

Chicago Manual of Style (16^th Edition):

Queirolo, Rosalba. “Can quantitative and qualitative deep marine depositional models be reconciled?: a case study of the sites member turbidite sequence, Cortina Formation (Upper Cretaceous), Cache Creek, California.” 2015. Masters Thesis, Montana State University. Accessed March 05, 2021. https://scholarworks.montana.edu/xmlui/handle/1/10144.

MLA Handbook (7^th Edition):

Queirolo, Rosalba. “Can quantitative and qualitative deep marine depositional models be reconciled?: a case study of the sites member turbidite sequence, Cortina Formation (Upper Cretaceous), Cache Creek, California.” 2015. Web. 05 Mar 2021.

Vancouver:

Queirolo R. Can quantitative and qualitative deep marine depositional models be reconciled?: a case study of the sites member turbidite sequence, Cortina Formation (Upper Cretaceous), Cache Creek, California. [Internet] [Masters thesis]. Montana State University; 2015. [cited 2021 Mar 05]. Available from: https://scholarworks.montana.edu/xmlui/handle/1/10144.

Council of Science Editors:

Queirolo R. Can quantitative and qualitative deep marine depositional models be reconciled?: a case study of the sites member turbidite sequence, Cortina Formation (Upper Cretaceous), Cache Creek, California. [Masters Thesis]. Montana State University; 2015. Available from: https://scholarworks.montana.edu/xmlui/handle/1/10144

Arizona State University

4. O'Donnell, Sean Thomas. Mitigation of Earthquake-Induced Soil Liquefaction via Microbial Denitrification: A Two-Stage Process.

Degree: Civil and Environmental Engineering, 2016, Arizona State University

URL: http://repository.asu.edu/items/38697

► The dissimilatory reduction of nitrate, or denitrification, offers the potential of a sustainable, cost effective method for the non-disruptive mitigation of earthquake-induced soil liquefaction. Worldwide,… (more)

▼ The dissimilatory reduction of nitrate, or denitrification, offers the potential of a sustainable, cost effective method for the non-disruptive mitigation of earthquake-induced soil liquefaction. Worldwide, trillions of dollars of infrastructure are at risk for liquefaction damage in earthquake prone regions. However, most techniques for remediating liquefiable soils are either not applicable to sites near existing infrastructure, or are prohibitively expensive. Recently, laboratory studies have shown the potential for biogeotechnical soil improvement techniques such as microbially induced carbonate precipitation (MICP) to mitigate liquefaction potential in a non-disruptive manner. Multiple microbial processes have been identified for MICP, but only two have been extensively studied. Ureolysis, the most commonly studied process for MICP, has been shown to quickly and efficiently induce carbonate precipitation on particle surfaces and at particle contacts to improve the stiffness, strength, and dilatant behavior of liquefiable soils. However, ureolysis also produces copious amounts of ammonium, a potentially toxic byproduct. The second process studied for MICP, denitrification, has been shown to precipitate carbonate, and hence improve soil properties, much more slowly than ureolysis. However, the byproducts of denitrification, nitrogen and carbon dioxide gas, are non-toxic, and present the added benefit of rapidly desaturating the treated soil. Small amounts of desaturation have been shown to increase the cyclic resistance, and hence the liquefaction resistance, of liquefiable soils. So, denitrification offers the potential to mitigate liquefaction as a two-stage process, with desaturation providing short term mitigation, and MICP providing long term liquefaction resistance. This study presents the results of soil testing, stoichiometric modeling, and microbial ecology characterization to better characterize the potential use of denitrification as a two-stage process for liquefaction mitigation.

Subjects/Keywords: Civil engineering; Environmental engineering; Geotechnology; Denitrification; Desaturation; Liquefaction Mitigation; Microbially Induced Carbonate Precipitation; Soil Improvement

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APA (6^th Edition):

O'Donnell, S. T. (2016). Mitigation of Earthquake-Induced Soil Liquefaction via Microbial Denitrification: A Two-Stage Process. (Doctoral Dissertation). Arizona State University. Retrieved from http://repository.asu.edu/items/38697

Chicago Manual of Style (16^th Edition):

O'Donnell, Sean Thomas. “Mitigation of Earthquake-Induced Soil Liquefaction via Microbial Denitrification: A Two-Stage Process.” 2016. Doctoral Dissertation, Arizona State University. Accessed March 05, 2021. http://repository.asu.edu/items/38697.

MLA Handbook (7^th Edition):

O'Donnell, Sean Thomas. “Mitigation of Earthquake-Induced Soil Liquefaction via Microbial Denitrification: A Two-Stage Process.” 2016. Web. 05 Mar 2021.

Vancouver:

O'Donnell ST. Mitigation of Earthquake-Induced Soil Liquefaction via Microbial Denitrification: A Two-Stage Process. [Internet] [Doctoral dissertation]. Arizona State University; 2016. [cited 2021 Mar 05]. Available from: http://repository.asu.edu/items/38697.

Council of Science Editors:

O'Donnell ST. Mitigation of Earthquake-Induced Soil Liquefaction via Microbial Denitrification: A Two-Stage Process. [Doctoral Dissertation]. Arizona State University; 2016. Available from: http://repository.asu.edu/items/38697

Oregon State University

5. Thornburg, Todd Mark. Sedimentation in the Chile Trench.

Degree: PhD, Oceanography, 1984, Oregon State University

URL: http://hdl.handle.net/1957/27996

Subjects/Keywords: Sedimentary structures – Chile

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Thornburg, T. M. (1984). Sedimentation in the Chile Trench. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/27996

Chicago Manual of Style (16^th Edition):

Thornburg, Todd Mark. “Sedimentation in the Chile Trench.” 1984. Doctoral Dissertation, Oregon State University. Accessed March 05, 2021. http://hdl.handle.net/1957/27996.

MLA Handbook (7^th Edition):

Thornburg, Todd Mark. “Sedimentation in the Chile Trench.” 1984. Web. 05 Mar 2021.

Vancouver:

Thornburg TM. Sedimentation in the Chile Trench. [Internet] [Doctoral dissertation]. Oregon State University; 1984. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1957/27996.

Council of Science Editors:

Thornburg TM. Sedimentation in the Chile Trench. [Doctoral Dissertation]. Oregon State University; 1984. Available from: http://hdl.handle.net/1957/27996

University of Houston

6. Gabel, Thomas Christopher 1989-. Microbes and Mg: Investigating Stable Mg Isotope Fractionation in Microbally Mediated Carbonates.

Degree: MS, Geology, University of Houston

URL: http://hdl.handle.net/10657/2144

► Microbially induced precipitation is a phenomenon in which minerals are precipitated as a byproduct of the metabolic processes and organic presence (e.g., biofilms) of microorganisms.… (more)

Subjects/Keywords: Microbially induced precipitation; Bacterially induced precipitation; Mg isotope fractionation; Magnesium isotope fractionation

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APA (6^th Edition):

Gabel, T. C. 1. (n.d.). Microbes and Mg: Investigating Stable Mg Isotope Fractionation in Microbally Mediated Carbonates. (Masters Thesis). University of Houston. Retrieved from http://hdl.handle.net/10657/2144

Note: this citation may be lacking information needed for this citation format:
No year of publication.

Chicago Manual of Style (16^th Edition):

Gabel, Thomas Christopher 1989-. “Microbes and Mg: Investigating Stable Mg Isotope Fractionation in Microbally Mediated Carbonates.” Masters Thesis, University of Houston. Accessed March 05, 2021. http://hdl.handle.net/10657/2144.

Note: this citation may be lacking information needed for this citation format:
No year of publication.

MLA Handbook (7^th Edition):

Gabel, Thomas Christopher 1989-. “Microbes and Mg: Investigating Stable Mg Isotope Fractionation in Microbally Mediated Carbonates.” Web. 05 Mar 2021.

Note: this citation may be lacking information needed for this citation format:
No year of publication.

Vancouver:

Gabel TC1. Microbes and Mg: Investigating Stable Mg Isotope Fractionation in Microbally Mediated Carbonates. [Internet] [Masters thesis]. University of Houston; [cited 2021 Mar 05]. Available from: http://hdl.handle.net/10657/2144.

Note: this citation may be lacking information needed for this citation format:
No year of publication.

Council of Science Editors:

Gabel TC1. Microbes and Mg: Investigating Stable Mg Isotope Fractionation in Microbally Mediated Carbonates. [Masters Thesis]. University of Houston; Available from: http://hdl.handle.net/10657/2144

Note: this citation may be lacking information needed for this citation format:
No year of publication.

Queens University

7. Woodcock, Nicole. USING BIOGEOCEMENTATION TO REDUCE PHYSICAL INSTABILITY AND WIND EROSION OF MINE TAILINGS .

Degree: Civil Engineering, Queens University

URL: http://hdl.handle.net/1974/28647

► The mining industry in Canada is an essential driver of economic growth as societal demands for minerals increases with advances in technology. The waste generated… (more)

▼ The mining industry in Canada is an essential driver of economic growth as societal demands for minerals increases with advances in technology. The waste generated through these mine operations is one of the biggest environmental and safety hazards in the world, with the long-term storage of this waste in tailings dams being a geotechnical and geochemical hazard. The biogeocementation of tailings, using calcite produced by microorganisms to create rock-like tailings deposits, is an attractive concept because a bio-cement can be formed that is durable enough to improve the mechanical behavior of the tailings. In this work, the microorganism Sporosarcina pasteurii was explored for its effectiveness at performing biogeocementation to physically stabilize gold and nickel mine tailings and prevent the wind erosion of gold mine tailings deposits. S. pasteurii was proven to be resilient when exposed to heavy metals at low concentrations, from temperatures of 4 to 31C, and pH values from 2 to 12, indicating S. pasteurii can survive in the potentially harsh conditions of tailings dams. S. pasteurii was then utilized to strengthen undrained gold and nickel tailings. Gold tailings from the Dominican Republic showed a 6.8% increase in shear strength with bacteria inoculation whereas nickel tailings from British Columbia showed an 18% decrease in shear strength. This indicates biogeocementation was successful for the gold tailings and unsuccessful for the nickel tailings which could be due to pore clogging. Finally, S. pasteurii was investigated for its ability to withstand wind speeds up to 15 km/h with the average percent mass lost reduced to 0.46  0.22% from 3.99  0.88%. The most effective application method for biogeocementation was found to be a single application of S. pasteurii followed by a continuous application of nutrient amendments, which has positive implications for field level scale-up. The promise of biogeocementation is demonstrated in this thesis, however, future proof-of-concept work needs to be performed to further characterize the robustness of S. pasteurii and determine its effectiveness in real-world environments, such as tailings dams.

Subjects/Keywords: Sporosarcina pasteurii ; Liquefaction ; Microbially induced calcite precipitation ; Mine tailings ; Dust suppression

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APA (6^th Edition):

Woodcock, N. (n.d.). USING BIOGEOCEMENTATION TO REDUCE PHYSICAL INSTABILITY AND WIND EROSION OF MINE TAILINGS . (Thesis). Queens University. Retrieved from http://hdl.handle.net/1974/28647

Note: this citation may be lacking information needed for this citation format:
No year of publication.
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Woodcock, Nicole. “USING BIOGEOCEMENTATION TO REDUCE PHYSICAL INSTABILITY AND WIND EROSION OF MINE TAILINGS .” Thesis, Queens University. Accessed March 05, 2021. http://hdl.handle.net/1974/28647.

Note: this citation may be lacking information needed for this citation format:
No year of publication.
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Woodcock, Nicole. “USING BIOGEOCEMENTATION TO REDUCE PHYSICAL INSTABILITY AND WIND EROSION OF MINE TAILINGS .” Web. 05 Mar 2021.

Note: this citation may be lacking information needed for this citation format:
No year of publication.

Vancouver:

Woodcock N. USING BIOGEOCEMENTATION TO REDUCE PHYSICAL INSTABILITY AND WIND EROSION OF MINE TAILINGS . [Internet] [Thesis]. Queens University; [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1974/28647.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
No year of publication.

Council of Science Editors:

Woodcock N. USING BIOGEOCEMENTATION TO REDUCE PHYSICAL INSTABILITY AND WIND EROSION OF MINE TAILINGS . [Thesis]. Queens University; Available from: http://hdl.handle.net/1974/28647

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
No year of publication.

Universiteit Utrecht

8. Dirkx, R. The Posidonia Shale in the Dutch Offshore: An Optical, Electron Optical and Geochemical Study.

Degree: 2010, Universiteit Utrecht

URL: http://dspace.library.uu.nl:8080/handle/1874/189147

► The Posidonia Shale Fm in the Dutch Central Graben is well known for its high concentration of orgnic matter. The preservation of organic matter previously… (more)

▼ The Posidonia Shale Fm in the Dutch Central Graben is well known for its high concentration of orgnic matter. The preservation of organic matter previously have been explained by permanent anoxic conditions and restricted water conditions. Recent studies have shown, however, that low energy settings or quiet water conditions and the subsequent suspension settling are not a prerequisite for deposition of muds and shales, but that depositional energy condition are commonly sufficiently high to rework and advect the sediment. In order to effectively determine the lithofacies variability within a succession it is important to make observations of grain-size, determine the origin of individual components, and make microtextural observations of the rock. Therefore, this study uses a combination of optical, electron optical and geochemical analyses of unusually thin (< 20 µm) polished thin sections to show that the Posidonia Shale Fm is deposited by multiple depositional mechanisms in a dynamic fine-grained siliclastic environment. The thin section analyses shows that the Posidonia Shale Fm is characterised by a stacked succession of mud-sized dominated thin beds often characterised by three-fold internal stratigraphy. These thin beds have an erosional base with on top a silt-dominated unit which is either gradually fining upwards or arranged in low angle laminae. The second unit consists of lamina sets of clay and silt dominated layers which are either horizontal or curved and vary from continuous to discontinuous. The uppermost unit, which is predominantly recognised in the upper part of the Posidonia Shale Fm, is homogeneous and clay dominated. Furthermore, the upper part of the Posidonia Shale Fm is characterised by carbonate micro concretions and a high abundance of pyrite. The geochemical analyses show a concomitant negative carbon isotope excursion, increase in TOC concentration and an increasingly heavier sulphur isotope trend in the upper part of the Posidonia Shale Fm. Furthermore, redox and productivity proxies are enriched in this part of the succession. This typical vertical trend in each thin beds suggests that the sediment-water interface was located below the fair-weather wave base, but in relatively shallow water above the storm wave base. Anoxic conditions below the sediment-water interface prevailed in the lower part of the Posidonia Shale Fm and extended to anoxic to sulphidic bottom water conditions in the upper part of the Posidonia Shale Fm. The three-fold internal stratigraphy, however, shows that these conditions were interrupted by short events, possibly by storm induced wave activity, and the subsequent inflow of oxygen-rich surface waters. The Posidonia Shale Fm is, thus, deposited in a dynamic fine-grained siliclastic environment with an alternation of anoxic and short-term oxic conditions. Advisors/Committee Members: Trabucho Alexandre, J., Boer, P.L. de.

Subjects/Keywords: Geowetenschappen; Toarcian; Jurassic; Posidonia Shale, Oceanic Anoxic Event; Sedimentary Structures; Geochemistry

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APA (6^th Edition):

Dirkx, R. (2010). The Posidonia Shale in the Dutch Offshore: An Optical, Electron Optical and Geochemical Study. (Masters Thesis). Universiteit Utrecht. Retrieved from http://dspace.library.uu.nl:8080/handle/1874/189147

Chicago Manual of Style (16^th Edition):

Dirkx, R. “The Posidonia Shale in the Dutch Offshore: An Optical, Electron Optical and Geochemical Study.” 2010. Masters Thesis, Universiteit Utrecht. Accessed March 05, 2021. http://dspace.library.uu.nl:8080/handle/1874/189147.

MLA Handbook (7^th Edition):

Dirkx, R. “The Posidonia Shale in the Dutch Offshore: An Optical, Electron Optical and Geochemical Study.” 2010. Web. 05 Mar 2021.

Vancouver:

Dirkx R. The Posidonia Shale in the Dutch Offshore: An Optical, Electron Optical and Geochemical Study. [Internet] [Masters thesis]. Universiteit Utrecht; 2010. [cited 2021 Mar 05]. Available from: http://dspace.library.uu.nl:8080/handle/1874/189147.

Council of Science Editors:

Dirkx R. The Posidonia Shale in the Dutch Offshore: An Optical, Electron Optical and Geochemical Study. [Masters Thesis]. Universiteit Utrecht; 2010. Available from: http://dspace.library.uu.nl:8080/handle/1874/189147

9. Sumangala, K N. “Hydro Geochemical Quality Assessment of Groundwater – A General Perspective”.

Degree: Chemical Oceanography, 2011, Cochin University of Science and Technology

URL: http://dyuthi.cusat.ac.in/purl/3703

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People in several parts of the world as well in India countenance an immense confront to meet the basic needs of water. The crisis is… (more)

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People in several parts of the world as well in India countenance an immense confront to meet the basic needs of water. The crisis is not due to lack of fresh water but its availability in adequate superiority. Environmental quality objectives should be developed in order to define acceptable loads on the terrain. There has been a number of initiatives in water quality monitoring but the next step towards improving its quality hasn’t taken the required pace. Today, there is a growing need to create awareness among citizens on the different technologies available for improving the water quality. Monitoring facilitate to apprehend how land and water use distress the quality of water and assist in estimating the extent of pollution. Once these issues are recognized, people can work towards local solutions to manage the indispensable resource effectively. Ground waters are extremely precious resources and in many countries together with India they represent the most important drinking water supply. They are generally microbiologically pure and, in most cases, they do not need any treatment. This communiqué is intended to act as a channel on the various paraphernalia and techniques accessible for groundwater quality assessment and suggesting the assured precautionary measures to embark on environment management. This learning is imperative considering that groundwater as the exclusive source of drinking water in the region which not makes situation alarming but also calls for immediate attention. The scope of this work is somewhat vast. Water quality in Ernakulam district is getting deteriorated due to the fast growth of urbanization. The closure of several water bodies due to land development and construction prevents infiltration of rainwater into the ground and hence recharge the aquifers. Most of the aquifers are getting polluted from the industrial effluents and chemicals and fertilizers used in agriculture. Such serious issues require proper monitoring of groundwater and steps are to be taken for remedial measures. This study helps in the total protection of the rich resource of groundwater and its sustainability. Socio-economic aspect covered could be used for conducting further individual case studies and to suggest remedial measures on a scientific basis. The specific study taken up for 15 sites can be further extended to the sources of pollution, especially industrial and agriculture

Cochin University of Science and Technology

Subjects/Keywords: Hydrologic cycle; water quality parameters; Groundwater structures; Shallow sedimentary aquifer

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APA (6^th Edition):

Sumangala, K. N. (2011). “Hydro Geochemical Quality Assessment of Groundwater – A General Perspective”. (Thesis). Cochin University of Science and Technology. Retrieved from http://dyuthi.cusat.ac.in/purl/3703

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Sumangala, K N. ““Hydro Geochemical Quality Assessment of Groundwater – A General Perspective”.” 2011. Thesis, Cochin University of Science and Technology. Accessed March 05, 2021. http://dyuthi.cusat.ac.in/purl/3703.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Sumangala, K N. ““Hydro Geochemical Quality Assessment of Groundwater – A General Perspective”.” 2011. Web. 05 Mar 2021.

Vancouver:

Sumangala KN. “Hydro Geochemical Quality Assessment of Groundwater – A General Perspective”. [Internet] [Thesis]. Cochin University of Science and Technology; 2011. [cited 2021 Mar 05]. Available from: http://dyuthi.cusat.ac.in/purl/3703.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Sumangala KN. “Hydro Geochemical Quality Assessment of Groundwater – A General Perspective”. [Thesis]. Cochin University of Science and Technology; 2011. Available from: http://dyuthi.cusat.ac.in/purl/3703

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Texas A&M University

10. Ponton, James Daniel. Structural analysis of the Little Water syncline, Beaverhead County, Montana.

Degree: MS, 2012, Texas A&M University

URL: http://hdl.handle.net/1969.1/ETD-TAMU-1983-THESIS-P818

Subjects/Keywords:

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APA (6^th Edition):

Ponton, J. D. (2012). Structural analysis of the Little Water syncline, Beaverhead County, Montana. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-1983-THESIS-P818

Chicago Manual of Style (16^th Edition):

Ponton, James Daniel. “Structural analysis of the Little Water syncline, Beaverhead County, Montana.” 2012. Masters Thesis, Texas A&M University. Accessed March 05, 2021. http://hdl.handle.net/1969.1/ETD-TAMU-1983-THESIS-P818.

MLA Handbook (7^th Edition):

Ponton, James Daniel. “Structural analysis of the Little Water syncline, Beaverhead County, Montana.” 2012. Web. 05 Mar 2021.

Vancouver:

Ponton JD. Structural analysis of the Little Water syncline, Beaverhead County, Montana. [Internet] [Masters thesis]. Texas A&M University; 2012. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-1983-THESIS-P818.

Council of Science Editors:

Ponton JD. Structural analysis of the Little Water syncline, Beaverhead County, Montana. [Masters Thesis]. Texas A&M University; 2012. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-1983-THESIS-P818

University of Aberdeen

11. Alam, Mahaboob. Petroleum geochemistry of the Tertiary sediments and oil samples from the Bengal Basin, Bangladesh.

Degree: Dept. of Geology., 1990, University of Aberdeen

URL: http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?application=DIGITOOL-3&owner=resourcediscovery&custom_att_2=simple_viewer&pid=192288 ; http://digitool.abdn.ac.uk:1801/webclient/DeliveryManager?pid=192288&custom_att_2=simple_viewer

Subjects/Keywords: Petroleum; Geology; Sedimentary structures

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Alam, M. (1990). Petroleum geochemistry of the Tertiary sediments and oil samples from the Bengal Basin, Bangladesh. (Doctoral Dissertation). University of Aberdeen. Retrieved from http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?application=DIGITOOL-3&owner=resourcediscovery&custom_att_2=simple_viewer&pid=192288 ; http://digitool.abdn.ac.uk:1801/webclient/DeliveryManager?pid=192288&custom_att_2=simple_viewer

Chicago Manual of Style (16^th Edition):

Alam, Mahaboob. “Petroleum geochemistry of the Tertiary sediments and oil samples from the Bengal Basin, Bangladesh.” 1990. Doctoral Dissertation, University of Aberdeen. Accessed March 05, 2021. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?application=DIGITOOL-3&owner=resourcediscovery&custom_att_2=simple_viewer&pid=192288 ; http://digitool.abdn.ac.uk:1801/webclient/DeliveryManager?pid=192288&custom_att_2=simple_viewer.

MLA Handbook (7^th Edition):

Alam, Mahaboob. “Petroleum geochemistry of the Tertiary sediments and oil samples from the Bengal Basin, Bangladesh.” 1990. Web. 05 Mar 2021.

Vancouver:

Alam M. Petroleum geochemistry of the Tertiary sediments and oil samples from the Bengal Basin, Bangladesh. [Internet] [Doctoral dissertation]. University of Aberdeen; 1990. [cited 2021 Mar 05]. Available from: http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?application=DIGITOOL-3&owner=resourcediscovery&custom_att_2=simple_viewer&pid=192288 ; http://digitool.abdn.ac.uk:1801/webclient/DeliveryManager?pid=192288&custom_att_2=simple_viewer.

Council of Science Editors:

Alam M. Petroleum geochemistry of the Tertiary sediments and oil samples from the Bengal Basin, Bangladesh. [Doctoral Dissertation]. University of Aberdeen; 1990. Available from: http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?application=DIGITOOL-3&owner=resourcediscovery&custom_att_2=simple_viewer&pid=192288 ; http://digitool.abdn.ac.uk:1801/webclient/DeliveryManager?pid=192288&custom_att_2=simple_viewer

Kansas State University

12. Tye, Rennie Virgil. The sedimentary petrology of some Kansas areas.

Degree: 1946, Kansas State University

URL: http://hdl.handle.net/2097/18592

Subjects/Keywords: Sedimentary structures – Kansas; Petrology – Kansas

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APA (6^th Edition):

Tye, R. V. (1946). The sedimentary petrology of some Kansas areas. (Thesis). Kansas State University. Retrieved from http://hdl.handle.net/2097/18592

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Tye, Rennie Virgil. “The sedimentary petrology of some Kansas areas.” 1946. Thesis, Kansas State University. Accessed March 05, 2021. http://hdl.handle.net/2097/18592.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Tye, Rennie Virgil. “The sedimentary petrology of some Kansas areas.” 1946. Web. 05 Mar 2021.

Vancouver:

Tye RV. The sedimentary petrology of some Kansas areas. [Internet] [Thesis]. Kansas State University; 1946. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/2097/18592.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Tye RV. The sedimentary petrology of some Kansas areas. [Thesis]. Kansas State University; 1946. Available from: http://hdl.handle.net/2097/18592

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Aberdeen

13. Alam, Mahaboob. Petroleum geochemistry of the Tertiary sediments and oil samples from the Bengal Basin, Bangladesh.

Degree: PhD, 1990, University of Aberdeen

URL: https://abdn.alma.exlibrisgroup.com/view/delivery/44ABE_INST/12152322410005941 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.262340

► Tertiary sediments taken from ten exploration wells and seven outcrop sections in the Bengal Basin together with thirteen oil and condensates and one oil seep… (more)

▼ Tertiary sediments taken from ten exploration wells and seven outcrop sections in the Bengal Basin together with thirteen oil and condensates and one oil seep and three oil soaked sandstones have been analysed using a variety of organic geochemical techniques. Detailed investigations of the distribution of biological marker compounds indicates that these soils (Surma Basin) are paraffinic waxy oils with a varying amount of C₂₁₊ n-alkanes typical of generation from source rocks rich in land plant waxes. The common occurrences of 24-norlupane and oleanane limits the age of the source rocks to Cretaceous or younger and most likely Tertiary. The selective occurrence of bicadinanes in the Surma Basin samples grouped the oils and condensates into two families suggesting the existence of more than one source rock. All the maturity parameters concur that the condensate samples from the Bengal foredeep region are of lower maturity and had been generated at the early stage of oil generation whilst the Surma Basin oils had been generated at around peak maturity of the source rock. The Hararganj oil seep and Sitakund oil-sands are severely biodegraded. The abundances of bicadinanes in Surma Basin oils indicate that they are not restricted to a few South East Asian (Indonesia, Sabah, Brunei) basins only. The occurrence of 24-norlupane has not yet been reported in crude oils and their presence in the Surma Basin oil and condensate samples suggests that they may also occur in Tertiary oils rich in angiosperm markers from other basins. Source characterisation of the various sample suites indicates the existence of at least three organic facies. The Upper Jenam samples with moderate to high organic richness contain abundant plant derived amorphous organic matter sufficient to qualify as a oil regnerating source rock. Maturity measurements of the Upper Jenam formation generally concur that the exposed sequences of this formation are insufficiently mature to have generated and expelled significant quantities of petroleum although the same formation in well sections is around the threshold of oil generation. Despite their immaturity, the source specific triterpane distributions in the Upper Jenam sediments indicates that they correlate closely with the Surma Basin oils. In terms of triterpane distribution the Bhuban sediments show a correlation with condensate samples. Despite their lean organic content, the huge volume of these sediments suggests that the Bhuban formation might have generated minor amounts of early mature condensate.

Subjects/Keywords: 551.9; Petroleum; Geology; Sedimentary structures

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APA (6^th Edition):

Alam, M. (1990). Petroleum geochemistry of the Tertiary sediments and oil samples from the Bengal Basin, Bangladesh. (Doctoral Dissertation). University of Aberdeen. Retrieved from https://abdn.alma.exlibrisgroup.com/view/delivery/44ABE_INST/12152322410005941 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.262340

Chicago Manual of Style (16^th Edition):

Alam, Mahaboob. “Petroleum geochemistry of the Tertiary sediments and oil samples from the Bengal Basin, Bangladesh.” 1990. Doctoral Dissertation, University of Aberdeen. Accessed March 05, 2021. https://abdn.alma.exlibrisgroup.com/view/delivery/44ABE_INST/12152322410005941 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.262340.

MLA Handbook (7^th Edition):

Alam, Mahaboob. “Petroleum geochemistry of the Tertiary sediments and oil samples from the Bengal Basin, Bangladesh.” 1990. Web. 05 Mar 2021.

Vancouver:

Alam M. Petroleum geochemistry of the Tertiary sediments and oil samples from the Bengal Basin, Bangladesh. [Internet] [Doctoral dissertation]. University of Aberdeen; 1990. [cited 2021 Mar 05]. Available from: https://abdn.alma.exlibrisgroup.com/view/delivery/44ABE_INST/12152322410005941 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.262340.

Council of Science Editors:

Alam M. Petroleum geochemistry of the Tertiary sediments and oil samples from the Bengal Basin, Bangladesh. [Doctoral Dissertation]. University of Aberdeen; 1990. Available from: https://abdn.alma.exlibrisgroup.com/view/delivery/44ABE_INST/12152322410005941 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.262340

University of Manchester

14. Bujang Masli, Azlan Bin. Interaction between Cathodic Protection and Microbially Influenced Corrosion.

Degree: 2011, University of Manchester

URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:142606

► The present work studied the interaction between cathodic protection and microbiallyinfluenced corrosion (MIC) on the surface of mild steel. Potential trending wasobserved when the currents… (more)

Subjects/Keywords: Cathodic Protection; Microbially Influenced Corrosion

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APA (6^th Edition):

Bujang Masli, A. B. (2011). Interaction between Cathodic Protection and Microbially Influenced Corrosion. (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:142606

Chicago Manual of Style (16^th Edition):

Bujang Masli, Azlan Bin. “Interaction between Cathodic Protection and Microbially Influenced Corrosion.” 2011. Doctoral Dissertation, University of Manchester. Accessed March 05, 2021. http://www.manchester.ac.uk/escholar/uk-ac-man-scw:142606.

MLA Handbook (7^th Edition):

Bujang Masli, Azlan Bin. “Interaction between Cathodic Protection and Microbially Influenced Corrosion.” 2011. Web. 05 Mar 2021.

Vancouver:

Bujang Masli AB. Interaction between Cathodic Protection and Microbially Influenced Corrosion. [Internet] [Doctoral dissertation]. University of Manchester; 2011. [cited 2021 Mar 05]. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:142606.

Council of Science Editors:

Bujang Masli AB. Interaction between Cathodic Protection and Microbially Influenced Corrosion. [Doctoral Dissertation]. University of Manchester; 2011. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:142606

University of Tasmania

15. Dunster, John N. The Lady Loretta formation : sedimentology and stratiform sediment-hosted base metal mineralisation.

Degree: 1997, University of Tasmania

URL: https://eprints.utas.edu.au/19678/1/whole_DunsterJohnN1998_thesis.pdf ; https://eprints.utas.edu.au/19678/13/DunsterJohnN1998Vol2_thesis_ex%20pub%20mat.pdf ; https://eprints.utas.edu.au/19678/2/whole_DunsterJohnN1998Vol2_thesis.pdf

► The Palaeoproterozoic Lady Loretta Formation of the Mount Isa Basin, northwestern Queensland, was deposited during a series of fluctuations in relative sealevel that constitute an… (more)

▼ The Palaeoproterozoic Lady Loretta Formation of the Mount Isa Basin, northwestern Queensland, was deposited during a series of fluctuations in relative sealevel that constitute an overall regression. The interpreted sedimentary environments range from sub-wavebase to supratidal. Carbonaceous lagoonal sediments host economic stratiform base metal mineralisation. Previous tectono-sedimentary models for the Lady Loretta Formation that invoked a rift-setting and interpreted a regional "basal breccia" as evidence of syn-sedimentary uplift and erosion are disputed. This study interprets the setting as a ramp/shelf with no evidence of large-scale syn-sedimentary tectonic activity. The "basal breccia" is interpreted as a duricrust that has no palaeoenvironmental implications for the depositional setting. Sedimentary structures, microbialites (stromatolites), evaporite pseudomorphs and the arrangement of interpreted depositional environments indicate fluctuations in water depth, tidal influence and storm activity during the deposition of the Lady Loretta Formation. Shale, laminated to massive argillaceous dolostone and fine grained sandstone containing hummocky and swaley cross-stratification are interpreted as the deepest-water facies present. Shallow marine carbonates now consist of variably silicified dolostone and include microbialites that range from prone mat to biostromes and bioherms of domal, digitate and columnar forms with significant synoptic relief. Ooid shoals developed in areas of shallow agitated water. Widespread mixed carbonate/siliciclastics and carbonates in the northern outcrops of the Lady Loretta Formation appear to be cyclic and developed as a facies mosaic. They are interpreted as peritidal on the basis of bipolar-bimodal palaeocurrent directions and the prevalence of flaser to lenticular bedded units, tidal rhythmites, interference wave ripples and herringbone cross-stratification with reactivation surfaces. Storm deposits such as imbricated plate breccias and gutter casts are common. Widespread casts and moulds of halite and pseudomorphs of discoidal gypsum, enterolithic anhydrite and cauliflower cherts are interpreted to represent an evaporitic overprint produced during regression when a marine sabkha developed locally. Associated sedimentary features include desiccation cracks, synaeresis cracks, washout rills, scour pits and wrinklemarks. Highly carbonaceous pyritic shale, variably diagenetically altered Fe- and Mn-rich carbonates and dolomitic siltstone were deposited in isolated areas, laterally and stratigraphically associated with tidal and possible subaerial facies. These pyritic facies occur at several localities in the Lady Loretta Formation, one of which hosts the Lady Loretta ore body consisting of 8.3 Mt of 12% Zn-Pb-Ag combined. The ore and its host rocks contain a variety of microbialites, including silicified or pyritised prone mat and low-relief, small diameter, elongate and inclined digitate forms. Parts of the host sequence also contain wave …

Subjects/Keywords: Sedimentary structures; Sedimentary structures; Ore deposits; Ore deposits; Geology; Structural; Geology; Structural

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APA (6^th Edition):

Dunster, J. N. (1997). The Lady Loretta formation : sedimentology and stratiform sediment-hosted base metal mineralisation. (Thesis). University of Tasmania. Retrieved from https://eprints.utas.edu.au/19678/1/whole_DunsterJohnN1998_thesis.pdf ; https://eprints.utas.edu.au/19678/13/DunsterJohnN1998Vol2_thesis_ex%20pub%20mat.pdf ; https://eprints.utas.edu.au/19678/2/whole_DunsterJohnN1998Vol2_thesis.pdf

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Dunster, John N. “The Lady Loretta formation : sedimentology and stratiform sediment-hosted base metal mineralisation.” 1997. Thesis, University of Tasmania. Accessed March 05, 2021. https://eprints.utas.edu.au/19678/1/whole_DunsterJohnN1998_thesis.pdf ; https://eprints.utas.edu.au/19678/13/DunsterJohnN1998Vol2_thesis_ex%20pub%20mat.pdf ; https://eprints.utas.edu.au/19678/2/whole_DunsterJohnN1998Vol2_thesis.pdf.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Dunster, John N. “The Lady Loretta formation : sedimentology and stratiform sediment-hosted base metal mineralisation.” 1997. Web. 05 Mar 2021.

Vancouver:

Dunster JN. The Lady Loretta formation : sedimentology and stratiform sediment-hosted base metal mineralisation. [Internet] [Thesis]. University of Tasmania; 1997. [cited 2021 Mar 05]. Available from: https://eprints.utas.edu.au/19678/1/whole_DunsterJohnN1998_thesis.pdf ; https://eprints.utas.edu.au/19678/13/DunsterJohnN1998Vol2_thesis_ex%20pub%20mat.pdf ; https://eprints.utas.edu.au/19678/2/whole_DunsterJohnN1998Vol2_thesis.pdf.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Dunster JN. The Lady Loretta formation : sedimentology and stratiform sediment-hosted base metal mineralisation. [Thesis]. University of Tasmania; 1997. Available from: https://eprints.utas.edu.au/19678/1/whole_DunsterJohnN1998_thesis.pdf ; https://eprints.utas.edu.au/19678/13/DunsterJohnN1998Vol2_thesis_ex%20pub%20mat.pdf ; https://eprints.utas.edu.au/19678/2/whole_DunsterJohnN1998Vol2_thesis.pdf

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

16. Katemaunzanga, David. Lithostratigraphy sedimentology and provenance of the Balfour Formation Beaufort Group in the Fort Beaufort Alice area Eastern Cape Province South Africa.

Degree: Faculty of Science and Agriculture, 2009, University of Fort Hare

URL: http://hdl.handle.net/10353/274

► A traverse through the Balfour Formation was chosen in the area around the towns of Fort Beaufort and Alice in the Eastern Cape Province. The… (more)

▼ A traverse through the Balfour Formation was chosen in the area around the towns of Fort Beaufort and Alice in the Eastern Cape Province. The main objectives of the study were to map the lithological variations within the Balfour Formation and to distinguish it from the underlying Middleton Formation and the overlying Katberg Formation. A combined desktop, field and laboratory approach was used in this study. Aerial photographs, satellite images and digital topographical maps formed the basis of the desktop work. After desktop mapping, a number of field traverses were measured through the study area. Sedimentary structures were observed, photomosaics were done, stratigraphic sections were measured and samples were collected for thin sectioning, heavy mineral separation and major, trace and REE analysis. Sedimentological development of the Balfour Formation has been outlined in relation to its provenance during the Late Permian. Lithological variation of the Balfour Formation is characterised by alternating sandstone-dominated and mudstone-dominated members. Arenaceous Oudeberg and Barberskrans Members are contain facies ranging from intraformational conglomerates (Gmm), massive sandstones (Sm & Ss), horizontally laminated sandstones (Sh), planar and trough cross-bedded sandstones (Sp, Sl & St), trough cross-laminated sandstones (Sr) and fine-grained sediments (Fm & Fl), whereas the mudstone dominated members are characterised by the facies Fm and Fl. Lithofacies together with bedforms observed in the Balfour Formation were used in architecturalelement analysis. Sandstone–rich members are dominated by channel fill elements such as LS, DA, SB, LA and CH, whereas the fine-grained component consists of mainly, FF iii element. The mudstone-dominated members contain FF, CS and LV elements, with LA, SB and CH in the subordinate sandstones. Petrography, geochemistry and palaeocurrent analysis indicated that the source of the Balfour Formation was to the south-east and the rocks had a transitional/dissected magmatic arc signature. This led to the postulation of the Karoo Basin to have developed in a retro-arc foreland basin where there was supralithospheric loading in the Cape Fold Belt due to a compressional regime initiated by the subduction of Palaeo-Pacific plate underneath the Gondwana plate. The tectonic loading was episodic with eight major paroxysms affecting the Karoo Supergroup. The Balfour Formation coincides with the fourth paroxysm, this paroxysm in turn consists of two third-order paroxysm that initiated the deposition of the Oudeberg and Barberskrans Members in low sinuosity streams. Each paroxysm was followed by a period of quiescence and these resulted in the deposition of the Daggaboersnek, Elandsberg and Palingkloof Members in meandering streams. Depositional environments were determined mainly from the sedimentary structures and 3D architecture of the rock types. Sandstone rich members were formed by seasonal and ephemeral high energy low sinuous streams whereas the fine-grained rich members were formed by… Advisors/Committee Members: Mr. Gunter, C.J.

Subjects/Keywords: Sedimentary structures – South Africa – Eastern Cape; Formations (Geology) – South Afri – Eastern Cape

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APA (6^th Edition):

Katemaunzanga, D. (2009). Lithostratigraphy sedimentology and provenance of the Balfour Formation Beaufort Group in the Fort Beaufort Alice area Eastern Cape Province South Africa. (Thesis). University of Fort Hare. Retrieved from http://hdl.handle.net/10353/274

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Katemaunzanga, David. “Lithostratigraphy sedimentology and provenance of the Balfour Formation Beaufort Group in the Fort Beaufort Alice area Eastern Cape Province South Africa.” 2009. Thesis, University of Fort Hare. Accessed March 05, 2021. http://hdl.handle.net/10353/274.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Katemaunzanga, David. “Lithostratigraphy sedimentology and provenance of the Balfour Formation Beaufort Group in the Fort Beaufort Alice area Eastern Cape Province South Africa.” 2009. Web. 05 Mar 2021.

Vancouver:

Katemaunzanga D. Lithostratigraphy sedimentology and provenance of the Balfour Formation Beaufort Group in the Fort Beaufort Alice area Eastern Cape Province South Africa. [Internet] [Thesis]. University of Fort Hare; 2009. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/10353/274.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Katemaunzanga D. Lithostratigraphy sedimentology and provenance of the Balfour Formation Beaufort Group in the Fort Beaufort Alice area Eastern Cape Province South Africa. [Thesis]. University of Fort Hare; 2009. Available from: http://hdl.handle.net/10353/274

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Michigan State University

17. Musser, Kathryn Jeanne. Conical structures in the middle precambrian michigamme formation.

Degree: MS, Department of Geology, 1981, Michigan State University

URL: http://etd.lib.msu.edu/islandora/object/etd:35176

Subjects/Keywords: Paleontology; Sedimentary structures – Michigan; Stromatolites; Turbidites

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APA (6^th Edition):

Musser, K. J. (1981). Conical structures in the middle precambrian michigamme formation. (Masters Thesis). Michigan State University. Retrieved from http://etd.lib.msu.edu/islandora/object/etd:35176

Chicago Manual of Style (16^th Edition):

Musser, Kathryn Jeanne. “Conical structures in the middle precambrian michigamme formation.” 1981. Masters Thesis, Michigan State University. Accessed March 05, 2021. http://etd.lib.msu.edu/islandora/object/etd:35176.

MLA Handbook (7^th Edition):

Musser, Kathryn Jeanne. “Conical structures in the middle precambrian michigamme formation.” 1981. Web. 05 Mar 2021.

Vancouver:

Musser KJ. Conical structures in the middle precambrian michigamme formation. [Internet] [Masters thesis]. Michigan State University; 1981. [cited 2021 Mar 05]. Available from: http://etd.lib.msu.edu/islandora/object/etd:35176.

Council of Science Editors:

Musser KJ. Conical structures in the middle precambrian michigamme formation. [Masters Thesis]. Michigan State University; 1981. Available from: http://etd.lib.msu.edu/islandora/object/etd:35176

University of Aberdeen

18. Romagna Pinter, Patricia. Reappraising the Numidian system (Miocene, southern Italy) deep-water sandstone fairways confined by tectonised substrate.

Degree: PhD, 2017, University of Aberdeen

URL: https://abdn.alma.exlibrisgroup.com/view/delivery/44ABE_INST/12152252390005941 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.759966

Subjects/Keywords: 551; Sedimentary structures; Sandstone; Geology, Structural

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APA (6^th Edition):

Romagna Pinter, P. (2017). Reappraising the Numidian system (Miocene, southern Italy) deep-water sandstone fairways confined by tectonised substrate. (Doctoral Dissertation). University of Aberdeen. Retrieved from https://abdn.alma.exlibrisgroup.com/view/delivery/44ABE_INST/12152252390005941 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.759966

Chicago Manual of Style (16^th Edition):

Romagna Pinter, Patricia. “Reappraising the Numidian system (Miocene, southern Italy) deep-water sandstone fairways confined by tectonised substrate.” 2017. Doctoral Dissertation, University of Aberdeen. Accessed March 05, 2021. https://abdn.alma.exlibrisgroup.com/view/delivery/44ABE_INST/12152252390005941 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.759966.

MLA Handbook (7^th Edition):

Romagna Pinter, Patricia. “Reappraising the Numidian system (Miocene, southern Italy) deep-water sandstone fairways confined by tectonised substrate.” 2017. Web. 05 Mar 2021.

Vancouver:

Romagna Pinter P. Reappraising the Numidian system (Miocene, southern Italy) deep-water sandstone fairways confined by tectonised substrate. [Internet] [Doctoral dissertation]. University of Aberdeen; 2017. [cited 2021 Mar 05]. Available from: https://abdn.alma.exlibrisgroup.com/view/delivery/44ABE_INST/12152252390005941 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.759966.

Council of Science Editors:

Romagna Pinter P. Reappraising the Numidian system (Miocene, southern Italy) deep-water sandstone fairways confined by tectonised substrate. [Doctoral Dissertation]. University of Aberdeen; 2017. Available from: https://abdn.alma.exlibrisgroup.com/view/delivery/44ABE_INST/12152252390005941 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.759966

Arizona State University

19. Kim, Daehyun. Pore-scale Study of Bio-mineral and Bio-gas Formations in Porous Media.

Degree: Civil, Environmental and Sustainable Engineering, 2019, Arizona State University

URL: http://repository.asu.edu/items/55491

Subjects/Keywords: Civil engineering; Biogeochemistry; Environmental engineering; Biogas; Biomineral; Denitrification; Microbially Induced Calcium Carbonate Precipitation; Porous media; Precipitation

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APA (6^th Edition):

Kim, D. (2019). Pore-scale Study of Bio-mineral and Bio-gas Formations in Porous Media. (Doctoral Dissertation). Arizona State University. Retrieved from http://repository.asu.edu/items/55491

Chicago Manual of Style (16^th Edition):

Kim, Daehyun. “Pore-scale Study of Bio-mineral and Bio-gas Formations in Porous Media.” 2019. Doctoral Dissertation, Arizona State University. Accessed March 05, 2021. http://repository.asu.edu/items/55491.

MLA Handbook (7^th Edition):

Kim, Daehyun. “Pore-scale Study of Bio-mineral and Bio-gas Formations in Porous Media.” 2019. Web. 05 Mar 2021.

Vancouver:

Kim D. Pore-scale Study of Bio-mineral and Bio-gas Formations in Porous Media. [Internet] [Doctoral dissertation]. Arizona State University; 2019. [cited 2021 Mar 05]. Available from: http://repository.asu.edu/items/55491.

Council of Science Editors:

Kim D. Pore-scale Study of Bio-mineral and Bio-gas Formations in Porous Media. [Doctoral Dissertation]. Arizona State University; 2019. Available from: http://repository.asu.edu/items/55491

20. Thampi, Jithin. MONITORING OF CORROSION IN SUBMERGED REINFORCED CONCRETE STRUCTURES USING BIOLOGICAL INDICATORS.

Degree: Civil Engineering, 2017, University of Maryland

URL: http://hdl.handle.net/1903/20032

► Corrosion of steel has severe economic impacts on industry and infrastructure. Reinforcement corrosion and subsequent loss of strength is the reason for failures in numerous… (more)

Subjects/Keywords: Engineering; Civil engineering; Concrete degradation; Corrosion; Corrosion detection; Microbially induced corrosion; Reinforced concrete; Structural health monitoring

…as a result of microbially induced corrosion (MIC) (Flemming 1996)… …electron donor like iron. This process is known as electrical microbially induced corrosion (… …sulfide. This process is called chemical microbially induced corrosion (CMIC). In the… …structures is one of the most common problems that require repair and rehabilitation of structures… …Kjellerup et al. 2009). Reinforced concrete and steel structures may be designed to be…

9 more images…

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APA (6^th Edition):

Thampi, J. (2017). MONITORING OF CORROSION IN SUBMERGED REINFORCED CONCRETE STRUCTURES USING BIOLOGICAL INDICATORS. (Thesis). University of Maryland. Retrieved from http://hdl.handle.net/1903/20032

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Thampi, Jithin. “MONITORING OF CORROSION IN SUBMERGED REINFORCED CONCRETE STRUCTURES USING BIOLOGICAL INDICATORS.” 2017. Thesis, University of Maryland. Accessed March 05, 2021. http://hdl.handle.net/1903/20032.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Thampi, Jithin. “MONITORING OF CORROSION IN SUBMERGED REINFORCED CONCRETE STRUCTURES USING BIOLOGICAL INDICATORS.” 2017. Web. 05 Mar 2021.

Vancouver:

Thampi J. MONITORING OF CORROSION IN SUBMERGED REINFORCED CONCRETE STRUCTURES USING BIOLOGICAL INDICATORS. [Internet] [Thesis]. University of Maryland; 2017. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1903/20032.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Thampi J. MONITORING OF CORROSION IN SUBMERGED REINFORCED CONCRETE STRUCTURES USING BIOLOGICAL INDICATORS. [Thesis]. University of Maryland; 2017. Available from: http://hdl.handle.net/1903/20032

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

21. Akimana, Rosa Mystica. Bacterial Activity and Precipitation Heterogeneity during Biomediated Calcite Precipitation for Soil Improvement.

Degree: MS, Civil Engineering, 2017, University of Toledo

URL: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1513381445346889

► Microbially induced calcite precipitation (MICP) has recently emerged as a potential ground improvement technique, where microorganisms play an active role in catalyzing urea hydrolysis and… (more)

▼ Microbially induced calcite precipitation (MICP) has recently emerged as a potential ground improvement technique, where microorganisms play an active role in catalyzing urea hydrolysis and inducing chemical precipitation of calcite, leading to the reduction of porosity and improvement of strength and stiffness. This ground improvement technique has a great potential in a variety of engineering applications, including bearing capacity boost, geo-hazard mitigation, geological CO2 sequestration, ground remediation and unconventional oil/gas recovery.Despite successful implementations achieved on laboratory scales, there remain many critically unanswered questions as to the predictability and controllability of altered/engineered soil properties, demanding improved understanding of the fundamental mechanisms across multiple scales. The present study focuses on a number of challenges in achieving successful and efficient calcite precipitation. Explored in this thesis are several phenomena related to this aspect: the short effective precipitation distance, clogging of the sand near the injection point, the flushing of bacterial cells out of the system (generally columns), inability to monitor in situ reactions and uneven distribution of biological activity and precipitated calcite.The primary objectives of the present study are: 1) to explore and recommend an injection method that helps reduce/prevent the clogging near injection point 2) to analyze in-situ bacterial survival in the soil throughout the treatment period 3) to monitor calcite precipitation evolution during treatment, and finally 4) to analyze calcite distribution along treated samples.The first part of the experimental study is focused on a series of batch experiments where the bacteria activity and chemical concentrations were monitored during urea hydrolysis and calcite precipitation. It was found that when mixed together, unhindered in the absence of a porous medium, urea hydrolysis and calcite precipitation progressed rapidly, typically taking less than a few hours for most calcite to precipitate. The second part of the experimental study is extended to the MICP in sand. A modified procedure was developed to minimize the possibilities of pre-mature calcite precipitation and clogging near the injection point; this is achieved by delaying the mixing of CaCl2 with the biological medium and resuspending the bacterial cells in a urea and difco nutrient solution. This led to significant improvement; very little to no clogging occurred in the process, allowing the pathways for the continuous fluid flow injected into the sand. As a consequence, it also led to considerable improvement of uniformity of calcite precipitation and a very high chemical efficiency of calcite production. Advisors/Committee Members: Hu, Liangbo (Advisor).

Subjects/Keywords: Engineering; Microbially Induced Calcite Precipitation, Urease Activity, Ground Improvement, Calcite Distribution

…techniques that have emerged in the recent years is microbially induced calcite precipitation… …reactions are reversible (DeJong et al. 2010). 3 1.2 Microbially Induced Calcite… …or bacteria. Hence, this biomediated process is widely referred to as microbially induced… …Plate Count HDD �� ..Horizontal Directional Drilling MICP �� Microbial Induced Calcite…

10 more images…

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APA (6^th Edition):

Akimana, R. M. (2017). Bacterial Activity and Precipitation Heterogeneity during Biomediated Calcite Precipitation for Soil Improvement. (Masters Thesis). University of Toledo. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=toledo1513381445346889

Chicago Manual of Style (16^th Edition):

Akimana, Rosa Mystica. “Bacterial Activity and Precipitation Heterogeneity during Biomediated Calcite Precipitation for Soil Improvement.” 2017. Masters Thesis, University of Toledo. Accessed March 05, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1513381445346889.

MLA Handbook (7^th Edition):

Akimana, Rosa Mystica. “Bacterial Activity and Precipitation Heterogeneity during Biomediated Calcite Precipitation for Soil Improvement.” 2017. Web. 05 Mar 2021.

Vancouver:

Akimana RM. Bacterial Activity and Precipitation Heterogeneity during Biomediated Calcite Precipitation for Soil Improvement. [Internet] [Masters thesis]. University of Toledo; 2017. [cited 2021 Mar 05]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1513381445346889.

Council of Science Editors:

Akimana RM. Bacterial Activity and Precipitation Heterogeneity during Biomediated Calcite Precipitation for Soil Improvement. [Masters Thesis]. University of Toledo; 2017. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1513381445346889

Delft University of Technology

22. Fikkers, Coen (author). Overhead sign structures - gantry: Structural response to truck induced wind loads by measurements and analysis.

Degree: 2018, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:0d22b395-0291-4cb3-ab8e-753eeb9d9991

►

The standard sign gantries at the highways in the Netherlands have different geometrical and structural characteristics than sign gantries in other countries. The sign gantries… (more)

▼

The standard sign gantries at the highways in the Netherlands have different geometrical and structural characteristics than sign gantries in other countries. The sign gantries have in total four oblique columns instead of two straight columns and have a triangular shaped spatial truss beam. The design loads that are currently taken into account include the effects of the self weight, natural wind and settlements. This research focuses on the structural response to vehicle induced wind loads. The vehicle induced wind loads cause a vibration of the truss beam mainly in its first horizontal mode. The vibration of the beam can be modelled by discretizing a simply supported Euler-Bernoulli beam with rotational springs at the supports that take into account the rotational stiffness of the columns. From literature the vehicle induced wind load is characterized as a pulse load, which is applied to the discrete beam model. The mass, stiffness and damping matrices are used to compute the structural response numerically in the time domain using MATLAB. This numerical calculation model is verified and fitted to the full scale measurements. The measurements were performed with multiple video cameras that were focussed on specific details of the structure and the vehicles that pass the structure. It was found that it is possible to approximate the amplitude of vibration in time using a single pulse load for trailer trucks and trucks. The stresses in the structure are calculated by applying a deformation that was caused by vehicle induced wind loads to a calculation model with bar elements in MatrixFrame. These stresses are compared with the cut off limit for fatigue detail classes. Based on the preliminary measurements and the calculation model it can be concluded that no fatigue damage is caused by vehicle induced wind loads for the newer series of structures (2012). The older series (2005) could encounter fatigue damage, but it depends on the span length of the beam.

Structural Engineering – Steel, hybrid and composite structures

Advisors/Committee Members: Veljkovic, Milan (mentor), Abspoel, Roland (mentor), Jarquin Laguna, Antonio (mentor), Joostensz, O. (mentor), Delft University of Technology (degree granting institution).

Subjects/Keywords: sign; support; structures; steel; fatigue; truck; induced; wind; loads

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APA (6^th Edition):

Fikkers, C. (. (2018). Overhead sign structures - gantry: Structural response to truck induced wind loads by measurements and analysis. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:0d22b395-0291-4cb3-ab8e-753eeb9d9991

Chicago Manual of Style (16^th Edition):

Fikkers, Coen (author). “Overhead sign structures - gantry: Structural response to truck induced wind loads by measurements and analysis.” 2018. Masters Thesis, Delft University of Technology. Accessed March 05, 2021. http://resolver.tudelft.nl/uuid:0d22b395-0291-4cb3-ab8e-753eeb9d9991.

MLA Handbook (7^th Edition):

Fikkers, Coen (author). “Overhead sign structures - gantry: Structural response to truck induced wind loads by measurements and analysis.” 2018. Web. 05 Mar 2021.

Vancouver:

Fikkers C(. Overhead sign structures - gantry: Structural response to truck induced wind loads by measurements and analysis. [Internet] [Masters thesis]. Delft University of Technology; 2018. [cited 2021 Mar 05]. Available from: http://resolver.tudelft.nl/uuid:0d22b395-0291-4cb3-ab8e-753eeb9d9991.

Council of Science Editors:

Fikkers C(. Overhead sign structures - gantry: Structural response to truck induced wind loads by measurements and analysis. [Masters Thesis]. Delft University of Technology; 2018. Available from: http://resolver.tudelft.nl/uuid:0d22b395-0291-4cb3-ab8e-753eeb9d9991

23. Shanmuga Sundaram, R N. Studies on the effect of microbially degraded agro by product feeds on digestibility and growth performance in domestic rabbit; -.

Degree: Botany, 1997, Goa University

URL: http://shodhganga.inflibnet.ac.in/handle/10603/31868

None

References given

Advisors/Committee Members: Bhat, D J.

Subjects/Keywords: degraded; microbially; Studies

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APA (6^th Edition):

Shanmuga Sundaram, R. N. (1997). Studies on the effect of microbially degraded agro by product feeds on digestibility and growth performance in domestic rabbit; -. (Thesis). Goa University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/31868

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Shanmuga Sundaram, R N. “Studies on the effect of microbially degraded agro by product feeds on digestibility and growth performance in domestic rabbit; -.” 1997. Thesis, Goa University. Accessed March 05, 2021. http://shodhganga.inflibnet.ac.in/handle/10603/31868.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Shanmuga Sundaram, R N. “Studies on the effect of microbially degraded agro by product feeds on digestibility and growth performance in domestic rabbit; -.” 1997. Web. 05 Mar 2021.

Vancouver:

Shanmuga Sundaram RN. Studies on the effect of microbially degraded agro by product feeds on digestibility and growth performance in domestic rabbit; -. [Internet] [Thesis]. Goa University; 1997. [cited 2021 Mar 05]. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/31868.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Shanmuga Sundaram RN. Studies on the effect of microbially degraded agro by product feeds on digestibility and growth performance in domestic rabbit; -. [Thesis]. Goa University; 1997. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/31868

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Vienna

24. Valovcan, Jaroslav. Kernel preprocessing in 3D adjoint tomography of local surface sedimentary structures.

Degree: 2019, University of Vienna

URL: http://othes.univie.ac.at/58607/

►

Jaroslav Valovčan: Kernel-Vorverarbeitung in der 3D adjungierten Tomographie lokaler Oberflächen-Sedimentstrukturen. [Master-Arbeit]. Comenius-Universität in Bratislava. Fakultät für Mathematik, Physik und Informatik, Abteilung für Astronomie, Physik der… (more)

▼

Jaroslav Valovčan: Kernel-Vorverarbeitung in der 3D adjungierten Tomographie lokaler Oberflächen-Sedimentstrukturen. [Master-Arbeit]. Comenius-Universität in Bratislava. Fakultät für Mathematik, Physik und Informatik, Abteilung für Astronomie, Physik der Erde und Meteorologie. Betreuer: prof. RNDr. Peter Moczo, DrSc. Bratislava 2019. 127 Stn. Qualifikationsgrad: Master. Seismische Bodenbewegungen können durch lokale Oberflächenstrukturen stark beeinflusst werden. Wenn wir deshalb eine Ausbreitung der seismischen Bewegung in den lokalen Oberflächen-Sedimentstrukturen modellieren sollen, brauchen wir nicht nur ein genaues Programm für eine numerische Modellierung der Ausbreitung der seismischen Bewegung, sondern auch ein ausreichend genaues Strukturmodell. Das kann durch seismische tomographische Methoden erhalten werden. In den letzten Jahren sind Vollwellenform inverse Methoden in großem Umfang verwendet worden. Eine der Vollwellenformmethoden ist die adjungierte Tomographie. Die adjungierte Tomographie verbessert ein Strukturmodell unter Verwendung eines sogenannten Kernels, bei dem es sich um eine Volumendichte des Gradienten der Misfit-Funktion zwischen dem beobachteten und dem berechneten Seismogramm handelt. Der Gradient wird in Bezug auf Modellparameter ausgewertet. Die adjungierte Tomographie ist über ein breites Spektrum von Skalen angewendet worden - von regional bis global. Es wurde jedoch noch nicht in 3D auf lokaler Skala eingesetzt. Der Grund dafür ist eine Schlechtgestelltheit des Problems. Die Inversion in den lokalen Oberflächenstrukturen ist spezifisch durch eine relativ kleine Menge verfügbarer Daten, eine hohe anfängliche Misfit-Funktion und Heterogenitäten im Modell mit kurzer Länge. Daher ist eine ordnungsgemäße Kernel-Vorkonditionierung erforderlich. Wir bauen auf der Pionierarbeit von Filip Kubina auf, der als erster die adjungierte Methode für eine Tomographie lokaler Oberflächen-Sedimentstrukturen in 2D einsetzte. Wir fokussieren uns auf die Vorkonditionierung des Kernels. Wir verallgemeinerten Algorithmen zum Glätten eines Kernels und Anwenden einer Maske auf den Kernel, die von Kubina vorgeschlagen worden waren. Wir erstellten Routinen zum effizienten Glätten von Kerneln sowie zur Berechnung und Anwendung der Maske in 3D. Wir führten eine umfangreiche numerische Prüfung der Routinen an künstlichen Daten durch, um deren Eigenschaften zu bestimmen. Die Routinen werden im Programm FDAtom3D von Filip Michlík implementiert, das die adjungierte Tomographie lokaler Oberflächen-Sedimentstrukturen durchführt.

Jaroslav Valovčan: Kernel preprocessing in 3D adjoint tomography of local surface sedimentary structures. [Master's thesis]. Comenius University in Bratislava. Faculty of Mathematics, Physics and Informatics, Department of Astronomy, Physics of the Earth and Meteorology. Supervisor: prof. RNDr. Peter Moczo, DrSc. Bratislava 2019. 127 pgs. Degree of qualification: Master. Seismic ground motion can be strongly affected by local surface structures. Therefore, if we are to model a propagation…

Subjects/Keywords: 38.38 Seismologie; adjungierte Tomographie / lokale Oberfläche-Sedimentstrukturen / Kernel-Vorverarbeitung / Glätten / Maske; adoint tomography / local surface sedimentary structures / kernel preprocessing / smoothing / mask

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Valovcan, J. (2019). Kernel preprocessing in 3D adjoint tomography of local surface sedimentary structures. (Thesis). University of Vienna. Retrieved from http://othes.univie.ac.at/58607/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Valovcan, Jaroslav. “Kernel preprocessing in 3D adjoint tomography of local surface sedimentary structures.” 2019. Thesis, University of Vienna. Accessed March 05, 2021. http://othes.univie.ac.at/58607/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Valovcan, Jaroslav. “Kernel preprocessing in 3D adjoint tomography of local surface sedimentary structures.” 2019. Web. 05 Mar 2021.

Vancouver:

Valovcan J. Kernel preprocessing in 3D adjoint tomography of local surface sedimentary structures. [Internet] [Thesis]. University of Vienna; 2019. [cited 2021 Mar 05]. Available from: http://othes.univie.ac.at/58607/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Valovcan J. Kernel preprocessing in 3D adjoint tomography of local surface sedimentary structures. [Thesis]. University of Vienna; 2019. Available from: http://othes.univie.ac.at/58607/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Université de Lorraine

25. Ruiu, Jérémy. Modélisation d'objets sédimentaires par des surfaces paramétriques et application à l'analyse d'image : Modeling of sedimentary structures and application to image analysis.

Degree: Docteur es, Géosciences, 2015, Université de Lorraine

URL: http://www.theses.fr/2015LORR0343

►

Les réservoirs clastiques sont constitués pour la plupart d'un agencement géométrique de plusieurs structures. Le but de ces travaux est de fournir une représentation volumétrique… (more)

▼

Les réservoirs clastiques sont constitués pour la plupart d'un agencement géométrique de plusieurs structures. Le but de ces travaux est de fournir une représentation volumétrique de ces différents objets afin de pouvoir reproduire la grande hétérogénéité des dépôts sédimentaires. Nous proposons une paramétrisation tridimensionnelle compacte des objets sédimentaires qui permet de représenter des géométries variées et qui fournit un espace curvilinéaire pour la modélisation des hétérogénéités internes des structures sédimentaires. Les modèles de corps géologiques sont définis par une représentation par frontières, chacune des frontières étant construite par une surface paramétrique déformable. La formulation mathématique utilisée pour construire les espaces paramétriques sont les B-Splines rationnelles non uniformes dites NURBS (pour Non Uniform Rational B-Splines). Chaque forme élémentaire est contrôlée par des règles de déformations afin de maintenir la géométrie et la cohérence des objets durant l'édition. Les modèles de structures sédimentaires sont appliqués à la simulation de chenaux et des structures qui y sont liées telles que les barres d'accrétion latérale. Ils servent alors de support pour réaliser des simulations de propriétés pétrophysiques qui suivent l'espace paramétrique particulier de chaque objet. Les modèles d'objets sédimentaires sont également appliqués dans le cadre de l'interprétation semi-automatique d'images géologiques en adaptant des méthodes classiques d'extraction de formes. Cette approche est appliquée sur des images satellites de chenaux alluviaux. Des résultats préliminaires sur des données de sismiques 3D sont également présentés

Most clastic deposits consist in geometric arrangements of several structures. The purpose of this work is to provide a volumetric representation of these objects in order to reproduce the high heterogeneity of the sedimentary deposits. These models are constructed to be flexible and compact in order to model the sedimentary formations at different scales. The sedimentary models are defined by a boundary representation ; each boundary is defined by a deformable parametric surface. The proposed parametrization is the Non Uniform Rational B-Spline (NURBS). Each elementary shape is controlled by deformation rules and has connection constraints with associated objects, in order to maintain the geometry and the consistency through editing. Sedimentary structure models are applied to channel simulation and to the construction of the related structures such as point bars. These structures are then used as framework for petrophysical property simulations. The models are also applied to semi-automatically interpret geological images by adapting classical shape extraction methods. This approach is applied on satellite pictures showing alluvial channels and some preliminary results on 3D seismic time slices are also presented

Advisors/Committee Members: Caumon, Guillaume (thesis director), Viseur, Sophie (thesis director).

Subjects/Keywords: Structure sédimentaire; Interprétation; NURBS; Chenal; Lobe; Clinoforme; Levée; Sedimentary structures; Interpretation; NURBS; Channel; Lobe; Clinoform; Levee; 551.028 5; 551.410 151

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APA (6^th Edition):

Ruiu, J. (2015). Modélisation d'objets sédimentaires par des surfaces paramétriques et application à l'analyse d'image : Modeling of sedimentary structures and application to image analysis. (Doctoral Dissertation). Université de Lorraine. Retrieved from http://www.theses.fr/2015LORR0343

Chicago Manual of Style (16^th Edition):

Ruiu, Jérémy. “Modélisation d'objets sédimentaires par des surfaces paramétriques et application à l'analyse d'image : Modeling of sedimentary structures and application to image analysis.” 2015. Doctoral Dissertation, Université de Lorraine. Accessed March 05, 2021. http://www.theses.fr/2015LORR0343.

MLA Handbook (7^th Edition):

Ruiu, Jérémy. “Modélisation d'objets sédimentaires par des surfaces paramétriques et application à l'analyse d'image : Modeling of sedimentary structures and application to image analysis.” 2015. Web. 05 Mar 2021.

Vancouver:

Ruiu J. Modélisation d'objets sédimentaires par des surfaces paramétriques et application à l'analyse d'image : Modeling of sedimentary structures and application to image analysis. [Internet] [Doctoral dissertation]. Université de Lorraine; 2015. [cited 2021 Mar 05]. Available from: http://www.theses.fr/2015LORR0343.

Council of Science Editors:

Ruiu J. Modélisation d'objets sédimentaires par des surfaces paramétriques et application à l'analyse d'image : Modeling of sedimentary structures and application to image analysis. [Doctoral Dissertation]. Université de Lorraine; 2015. Available from: http://www.theses.fr/2015LORR0343

26. Corbin, Nathan Andrew. Stratigraphic variation of sedimentary facies and architectual elements within channel complexes of the Mount Messenger Formation, Taranaki, New Zealand: Stratigraphic variation of sedimentary facies and architectual elements within channel complexes of the Mount Messenger Formation, Taranaki, New Zealand.

Degree: MS, College of Letters & Science, 2015, Montana State University

URL: https://scholarworks.montana.edu/xmlui/handle/1/9037

► This study establishes an architectural framework of sedimentary facies, event beds, and sedimentary bodies for channelized deep-water sandstone and siltstone deposits within the Lower Mount… (more)

▼ This study establishes an architectural framework of sedimentary facies, event beds, and sedimentary bodies for channelized deep-water sandstone and siltstone deposits within the Lower Mount Messenger Formation (LMMF). Well exposed outcrops of the Late Miocene Mount Messenger Formation are present along the Taranaki coast of the North Island, New Zealand. These exposures provide an opportunity to study submarine channel complexes deposited within an inner basin-floor fan to base of slope setting. Sedimentary facies and architectural elements are described from the axis to the margin and overbank of channel complexes to show spatial and temporal variation of subaqueous flow properties operating at the time of deposition. Facies were placed into an architectural framework to show organized changes in the diversity and abundance of bodies across the LMMF. Thirty hydrodynamic facies were described from outcrop exposures. Each facies represents varying hydrodynamic processes and sediment sources present during deposition. Sediments in the LMMF are interpreted to represent deposition by high- and low-density turbidity currents, concentrated and hyperconcentrated density flows, en masse movements, and debris flows. Six channel complexes described from coastal and inland outcrops record the variation of sedimentary facies spatially and temporally throughout their evolution. Analysis of architectural elements and sedimentary facies across the LMMF indicates flows were weakly confined within the basal interval, and progressively became more confined up-dip. This is reflected by multilateral channels near the base, and multistory channels up-section. Minor flow transformations within subaqueous flows are inferred. The sediments within the LMMF reflect an overall temporal decrease in flow strength, flow frequency, and event bed thickness, and a temporal increase in flow variability up-section from the base. Channels were deposited within a 3.5 km wide channel belt with the uppermost channels confined to a 1.7 km wide master erosional channel south of the lowermost channels. Paleoflow was directed to the northwest with little variation between each successive channel complex. Advisors/Committee Members: Chairperson, Graduate Committee: James G. Schmitt (advisor).

Subjects/Keywords: Geology, Stratigraphic.; Geology Miocene.; Sedimentary structures.

…deposition. These include bed thickness, grain size and sorting, sedimentary structures, and bed… …differences in bedform character, and other sedimentary structures (Mulder and Alexander, 2001… …Quantitative analysis of sedimentary facies proportions for the LMMF ...............89 21. Cross… …126 x ABSTRACT This study establishes an architectural framework of sedimentary facies… …event beds, and sedimentary bodies for channelized deep-water sandstone and siltstone deposits…

11 more images…

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APA (6^th Edition):

Corbin, N. A. (2015). Stratigraphic variation of sedimentary facies and architectual elements within channel complexes of the Mount Messenger Formation, Taranaki, New Zealand: Stratigraphic variation of sedimentary facies and architectual elements within channel complexes of the Mount Messenger Formation, Taranaki, New Zealand. (Masters Thesis). Montana State University. Retrieved from https://scholarworks.montana.edu/xmlui/handle/1/9037

Chicago Manual of Style (16^th Edition):

Corbin, Nathan Andrew. “Stratigraphic variation of sedimentary facies and architectual elements within channel complexes of the Mount Messenger Formation, Taranaki, New Zealand: Stratigraphic variation of sedimentary facies and architectual elements within channel complexes of the Mount Messenger Formation, Taranaki, New Zealand.” 2015. Masters Thesis, Montana State University. Accessed March 05, 2021. https://scholarworks.montana.edu/xmlui/handle/1/9037.

MLA Handbook (7^th Edition):

Corbin, Nathan Andrew. “Stratigraphic variation of sedimentary facies and architectual elements within channel complexes of the Mount Messenger Formation, Taranaki, New Zealand: Stratigraphic variation of sedimentary facies and architectual elements within channel complexes of the Mount Messenger Formation, Taranaki, New Zealand.” 2015. Web. 05 Mar 2021.

Vancouver:

Corbin NA. Stratigraphic variation of sedimentary facies and architectual elements within channel complexes of the Mount Messenger Formation, Taranaki, New Zealand: Stratigraphic variation of sedimentary facies and architectual elements within channel complexes of the Mount Messenger Formation, Taranaki, New Zealand. [Internet] [Masters thesis]. Montana State University; 2015. [cited 2021 Mar 05]. Available from: https://scholarworks.montana.edu/xmlui/handle/1/9037.

Council of Science Editors:

Corbin NA. Stratigraphic variation of sedimentary facies and architectual elements within channel complexes of the Mount Messenger Formation, Taranaki, New Zealand: Stratigraphic variation of sedimentary facies and architectual elements within channel complexes of the Mount Messenger Formation, Taranaki, New Zealand. [Masters Thesis]. Montana State University; 2015. Available from: https://scholarworks.montana.edu/xmlui/handle/1/9037

University of Arizona

27. Johansen, Steven John. Depositional environments of the Queantoweap sandstone of northwestern Arizona and southern Nevada .

Degree: 1981, University of Arizona

URL: http://hdl.handle.net/10150/557738

Subjects/Keywords: Sedimentary structures – Arizona.; Sandstone – Arizona.; Sedimentation and deposition.

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APA (6^th Edition):

Johansen, S. J. (1981). Depositional environments of the Queantoweap sandstone of northwestern Arizona and southern Nevada . (Masters Thesis). University of Arizona. Retrieved from http://hdl.handle.net/10150/557738

Chicago Manual of Style (16^th Edition):

Johansen, Steven John. “Depositional environments of the Queantoweap sandstone of northwestern Arizona and southern Nevada .” 1981. Masters Thesis, University of Arizona. Accessed March 05, 2021. http://hdl.handle.net/10150/557738.

MLA Handbook (7^th Edition):

Johansen, Steven John. “Depositional environments of the Queantoweap sandstone of northwestern Arizona and southern Nevada .” 1981. Web. 05 Mar 2021.

Vancouver:

Johansen SJ. Depositional environments of the Queantoweap sandstone of northwestern Arizona and southern Nevada . [Internet] [Masters thesis]. University of Arizona; 1981. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/10150/557738.

Council of Science Editors:

Johansen SJ. Depositional environments of the Queantoweap sandstone of northwestern Arizona and southern Nevada . [Masters Thesis]. University of Arizona; 1981. Available from: http://hdl.handle.net/10150/557738

University of Melbourne

28. O'Brien, Philip Edward. The Permian glacial sediments of central Victoria and the Murray Basin: their sedimentology and geochemistry.

Degree: 1986, University of Melbourne

URL: http://hdl.handle.net/11343/38899

► This study investigates the sedimentology and geochemistry of Permian glacial sediments cropping out in the Bacchus Marsh and Derrinal areas in central Victoria and in… (more)

▼ This study investigates the sedimentology and geochemistry of Permian glacial sediments cropping out in the Bacchus Marsh and Derrinal areas in central Victoria and in the subsurface beneath the Cainozoic Murray Basin in Victoria, New South Wales and South Australia. Facies analysis of the Bacchus Marsh Formation, based on a critical review of literature on glacial sedimentary processes and environments, identifies the following major facies groups: 1. Subglacial tillites deposited beneath wet-based ice. Some of these tillites exhibit structures indicative of a number of subglacial processes such as frictional lodgement of large clasts, subglacial bed deformation, subglacial meltwater flow and subglacial size sorting of clasts. Other subglacial tillites are essentially structureless. 2. Bedded diamictites to sandstones deposited predominantly by ice-rafting of debris into standing water. 3. Fluvial outwash sandstone and conglomerate facies that are finer-grained than typical proglacial outwash facies. 4. Deltas and subaqueous outwash fans vary from sandy sediments deposited by proglacial and subglacial streams to coarse, poorly sorted complexes deposited as debris aprons close to the ice front. Abundant underflow deposits suggest that less than normal marine salinities prevailed in these water bodies, even if they were arms of the sea. 5. Supraglacial tillites consisting of sandy diamictites to pebble conglomerates. Facies in the thickest sequence in the Bacchus Marsh area suggests that the area was covered by a major ice mass at least 8 times. Minor glacial advances took place during predominantly ice-free periods. The Derrinal Formation consists of a basal unit of predominantly subglacial tillite deposited in shallow glacially excavated valleys overlain by a complex of subglacial and supraglacial facies deposited by about 8 minor advances of a small ice tongue. Facies relationships in this part of the sequence are confused by intense deformation of the sediment pile during the melting of buried ice and dewatering of saturated diamictons. A major ice advance then overwhelmed the area depositing thick subglacial tillite. The Urana Formation, beneath the Murray Basin, is dominated by marine ice-rafted diamictite and mudstone. Rhythmically bedded siltstone and claystone, sediment gravity-flow deposits, traction-current deposits, and, possibly, subglacial tillites are also present. Facies assemblages in some drill holes indicate areas that were never covered by grounded glacial ice. Sedimentological and palaeontological evidence suggests that the Urana Formation was deposited towards the end of the glaciation. Ice motion indicators and ice sheet limits inferred from the facies assemblages in the Urana Formation are used to estimate the thickness of the ice over central Victoria during glacial maxima. These estimates support the conclusion drawn from the facies analysis…

Subjects/Keywords: glacial landforms; Victoria; Permian stratigraphic geology; sedimentary structures

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

O'Brien, P. E. (1986). The Permian glacial sediments of central Victoria and the Murray Basin: their sedimentology and geochemistry. (Doctoral Dissertation). University of Melbourne. Retrieved from http://hdl.handle.net/11343/38899

Chicago Manual of Style (16^th Edition):

O'Brien, Philip Edward. “The Permian glacial sediments of central Victoria and the Murray Basin: their sedimentology and geochemistry.” 1986. Doctoral Dissertation, University of Melbourne. Accessed March 05, 2021. http://hdl.handle.net/11343/38899.

MLA Handbook (7^th Edition):

O'Brien, Philip Edward. “The Permian glacial sediments of central Victoria and the Murray Basin: their sedimentology and geochemistry.” 1986. Web. 05 Mar 2021.

Vancouver:

O'Brien PE. The Permian glacial sediments of central Victoria and the Murray Basin: their sedimentology and geochemistry. [Internet] [Doctoral dissertation]. University of Melbourne; 1986. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/11343/38899.

Council of Science Editors:

O'Brien PE. The Permian glacial sediments of central Victoria and the Murray Basin: their sedimentology and geochemistry. [Doctoral Dissertation]. University of Melbourne; 1986. Available from: http://hdl.handle.net/11343/38899

University of Arizona

29. Mock, Peter Allen. New taxonomy of clastic sedimentary structures and a procedure for its use in the simulation of groundwater flow .

Degree: 1997, University of Arizona

URL: http://hdl.handle.net/10150/191220

► This work describes a new taxonomy for elastic, sedimentary porous media. The taxonomy is synthesized for the investigation and characterization of ground-water flow from accumulating… (more)

Subjects/Keywords: Hydrology.; Sedimentary structures.; Groundwater flow – Simulation methods.

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Mock, P. A. (1997). New taxonomy of clastic sedimentary structures and a procedure for its use in the simulation of groundwater flow . (Doctoral Dissertation). University of Arizona. Retrieved from http://hdl.handle.net/10150/191220

Chicago Manual of Style (16^th Edition):

Mock, Peter Allen. “New taxonomy of clastic sedimentary structures and a procedure for its use in the simulation of groundwater flow .” 1997. Doctoral Dissertation, University of Arizona. Accessed March 05, 2021. http://hdl.handle.net/10150/191220.

MLA Handbook (7^th Edition):

Mock, Peter Allen. “New taxonomy of clastic sedimentary structures and a procedure for its use in the simulation of groundwater flow .” 1997. Web. 05 Mar 2021.

Vancouver:

Mock PA. New taxonomy of clastic sedimentary structures and a procedure for its use in the simulation of groundwater flow . [Internet] [Doctoral dissertation]. University of Arizona; 1997. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/10150/191220.

Council of Science Editors:

Mock PA. New taxonomy of clastic sedimentary structures and a procedure for its use in the simulation of groundwater flow . [Doctoral Dissertation]. University of Arizona; 1997. Available from: http://hdl.handle.net/10150/191220

University of Arizona

30. Lawton, Timothy Frost. TECTONIC AND SEDIMENTOLOGIC EVOLUTION OF THE UTAH FORELAND BASIN .

Degree: 1983, University of Arizona

URL: http://hdl.handle.net/10150/187534

► The Late Cretaceous foreland basin in central Utah developed adjacent to the Cordilleran fold and thrust belt between Albian and latest Campanian time. Subsidence resulted… (more)

▼ The Late Cretaceous foreland basin in central Utah developed adjacent to the Cordilleran fold and thrust belt between Albian and latest Campanian time. Subsidence resulted from the lithospheric 'oad of coeval thrust sheets to the west. Compositional trends of foreland-basin sandstones record unroofing of stratigraphic sequences above ramp-style detachment thrusts until the middle Campanian, when folding above a frontal blind thrust system caused recycling of previously deposited foreland basin detritus. Basement uplifts within the foreland basin terminated subsidence in latest Campanian time. Thrust loading created a westward-thickening basin in which the sedimentary wedge fines eastward. Coarse-grained synorogenic strata along the western edge of the basin are included in the Indianola Group, which consists of a lower marine-dominated sequence and an upper fluvial sequence. The marine sequence correlates with the marine Mancos Shale farther east, while the upper fluvial sequence is equivalent to the Mesaverde Group. Individual lithostratigraphic units are time-transgressive, becoming younger eastward. Eight distinct depositional facies are recognized in the Indianola Group: alluvial fan conglomerate, braided fluvial conglomerate, braided fluvial pebbly sandstone, meanderbelt fluvial sandstone and siltstone, delta distributary sandstone, lagoonal sandstone, siltstone, and mudstone, nearshore marine sandstone, and open marine mudstone and siltstone. The Mesaverde Group was deposited mostly by sandy to pebbly braided and meandering rivers which transported detritus eastward from the thrust belt. Facies in the basin combine to form an offlapping sequence of eastward-fining clastic wedges. Sandstones of the basin are quartzarenites, sublitharenites, and litharenites derived from the sedimentary source terrane of the thrust belt. Detrital carbonate grains are an important fraction of the sedimentary rock fragments that dominate the lithic population of the sandstones. Feldspathic litharenites high in eastern exposures of the Mesaverde Group were derived from an arc terrane lying beyond the thrust belt. Linear petrographic trends shown by triangular QtFL and QpLsLv plots resulted from mixing of detritus from multiple sources. The age of synorogenic deposits and their succession by a Maastrichtian to Paleocene overlap assemblage indicate that foreland basin subsidence and major thrust faulting were continuous from late Albian through late Campanian time in central Utah. Advisors/Committee Members: Dickinson, William R (advisor).

Subjects/Keywords: Geology – Utah.; Geology, Structural.; Sedimentary structures – Utah.; Sedimentology.

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Lawton, T. F. (1983). TECTONIC AND SEDIMENTOLOGIC EVOLUTION OF THE UTAH FORELAND BASIN . (Doctoral Dissertation). University of Arizona. Retrieved from http://hdl.handle.net/10150/187534

Chicago Manual of Style (16^th Edition):

Lawton, Timothy Frost. “TECTONIC AND SEDIMENTOLOGIC EVOLUTION OF THE UTAH FORELAND BASIN .” 1983. Doctoral Dissertation, University of Arizona. Accessed March 05, 2021. http://hdl.handle.net/10150/187534.

MLA Handbook (7^th Edition):

Lawton, Timothy Frost. “TECTONIC AND SEDIMENTOLOGIC EVOLUTION OF THE UTAH FORELAND BASIN .” 1983. Web. 05 Mar 2021.

Vancouver:

Lawton TF. TECTONIC AND SEDIMENTOLOGIC EVOLUTION OF THE UTAH FORELAND BASIN . [Internet] [Doctoral dissertation]. University of Arizona; 1983. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/10150/187534.

Council of Science Editors:

Lawton TF. TECTONIC AND SEDIMENTOLOGIC EVOLUTION OF THE UTAH FORELAND BASIN . [Doctoral Dissertation]. University of Arizona; 1983. Available from: http://hdl.handle.net/10150/187534

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