subject:(Ordovician)

University of Georgia

1. Jenkins, Chelsea Ellen. Are biogeographic provinces discrete or gradational.

Degree: 2014, University of Georgia

► Provinces are the standard method of characterizing the spatial distribution of communities in ecology and biogeography. Provinces do not always exhibit clear boundaries or homogenous… (more)

Subjects/Keywords: province; gradient; biogeography; Laurentia; Ordovician

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APA (6^th Edition):

Jenkins, C. E. (2014). Are biogeographic provinces discrete or gradational. (Thesis). University of Georgia. Retrieved from http://hdl.handle.net/10724/30486

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):

Jenkins, Chelsea Ellen. “Are biogeographic provinces discrete or gradational.” 2014. Thesis, University of Georgia. Accessed March 02, 2021. http://hdl.handle.net/10724/30486.

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

MLA Handbook (7^th Edition):

Jenkins, Chelsea Ellen. “Are biogeographic provinces discrete or gradational.” 2014. Web. 02 Mar 2021.

Vancouver:

Jenkins CE. Are biogeographic provinces discrete or gradational. [Internet] [Thesis]. University of Georgia; 2014. [cited 2021 Mar 02]. Available from: http://hdl.handle.net/10724/30486.

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

Council of Science Editors:

Jenkins CE. Are biogeographic provinces discrete or gradational. [Thesis]. University of Georgia; 2014. Available from: http://hdl.handle.net/10724/30486

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

University of Ottawa

2. Castagner, Ariane. Carbonate Sedimentology and Diagenesis of an Upper Ordovician Sponge-microbe-cement Mound on Southampton Island, Nunavut, Canada .

Degree: 2016, University of Ottawa

URL: http://hdl.handle.net/10393/35374

► The Hudson Bay Basin is the largest intracratonic basin in North America, but remains a frontier area for our knowledge of its stratigraphy and sedimentology… (more)

Subjects/Keywords: reef; Ordovician; Southampton Island

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APA (6^th Edition):

Castagner, A. (2016). Carbonate Sedimentology and Diagenesis of an Upper Ordovician Sponge-microbe-cement Mound on Southampton Island, Nunavut, Canada . (Thesis). University of Ottawa. Retrieved from http://hdl.handle.net/10393/35374

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):

Castagner, Ariane. “Carbonate Sedimentology and Diagenesis of an Upper Ordovician Sponge-microbe-cement Mound on Southampton Island, Nunavut, Canada .” 2016. Thesis, University of Ottawa. Accessed March 02, 2021. http://hdl.handle.net/10393/35374.

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

MLA Handbook (7^th Edition):

Castagner, Ariane. “Carbonate Sedimentology and Diagenesis of an Upper Ordovician Sponge-microbe-cement Mound on Southampton Island, Nunavut, Canada .” 2016. Web. 02 Mar 2021.

Vancouver:

Castagner A. Carbonate Sedimentology and Diagenesis of an Upper Ordovician Sponge-microbe-cement Mound on Southampton Island, Nunavut, Canada . [Internet] [Thesis]. University of Ottawa; 2016. [cited 2021 Mar 02]. Available from: http://hdl.handle.net/10393/35374.

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

Council of Science Editors:

Castagner A. Carbonate Sedimentology and Diagenesis of an Upper Ordovician Sponge-microbe-cement Mound on Southampton Island, Nunavut, Canada . [Thesis]. University of Ottawa; 2016. Available from: http://hdl.handle.net/10393/35374

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

University of Missouri – Columbia

3. Putman, Kelsey Erin. Neodymium and oxygen isotopic constraints on upper Ordovician paleoceanographic evolution across the Dubuque/Maquoketa contact in NE Iowa and SE Minnesota.

Degree: 2011, University of Missouri – Columbia

URL: http://hdl.handle.net/10355/11502

► Measurements of conodonts, phosphatic brachiopods, and authigenic phosphate show no consistent trends in [superscript TM]18O[subscript phos] values but do show a gradual 2-3 unit [epsilon][subscript… (more)

▼ Measurements of conodonts, phosphatic brachiopods, and authigenic phosphate show no consistent trends in [superscript TM]18O[subscript phos] values but do show a gradual 2-3 unit [epsilon][subscript Nd] increase across the Dubuque/Maquoketa contact in NE Iowa and SE Minnesota. The lithologic transition between the limestone-rich Dubuque Formation, and the shalely Maquoketa Formation is often marked by a phosphatic hardground. Interpretations from previous studies have suggested that the phosphate was deposited during a time of upwelling of cool, nutrient rich, and oxygen poor water; the longer term shift from Dubuque Formation to the Maquoketa Formation is interpreted as the lithologic expression of a transgressive-regressive subsequence. The relative importance of climatic and circulation changes across the contact was tested along a north-south transect at three locations in IA and MN. Temperature trends were estimated using [superscript TM]18O[subscript phos], and the potential source region(s) of local waters were estimated using [epsilon][subscript Nd]. Conodont [superscript TM]18O[subscript phos] paleothermometry was done with conodont separates from samples with high enough conodont abundances ([ less than]250 [micrometer]/sample) to yield sufficient Ag[subscript 3]PO[subscript 4] for mass spectrometry analysis. To minimize potential artifacts from inter-species variability, species-specific separates were run for all conodont samples when possible. In addition, mixed separates, inarticulate brachiopods and authigenic phosphate were analyzed in selected samples to increase the number of temperature estimates and to assess the direction and possible magnitude of diagenetic overprinting. To determine if circulation fluctuated over the formational contact, [epsilon][subscript Nd]values from the phosphatic inarticulate brachiopod, Leptobolus were measured. A shift in [epsilon][subscript Nd(t)] values would indicate changes in the source regions or in the mixing patterns of water mass(es) in the region. The [superscript TM]18O[subscript phos] results do not support past models that have invoked upwelling of cool nutrient rich water and/or a transgressive event flooding the carbonate ramp with cool open ocean water as partially responsible for the change in lithologies seen in the Dubuque and Maquoketa Formations, but there is a consistent offset of [approximately]1[per mille] between the conodonts Drepanoistodus suberectus and Panderodus gracilis. In addition, [epsilon][subscript Nd] values from the Dubuque Fm. Range from -8.6 to -6.5 and they increase to -5.8 to -4.8 in the overlying Maquoketa Fm. Our results are consistent with a paleoceanographic model influenced by sea level rise. The Dubuque and Maquoketa Formations represent a transgressiveregressive sub cycle with highstand occurring at the contact between the two formations. During the transgression, fresh-water runoff from the Taconic highlands and an easterly wind could have generated a quasi-estuarine gyre that resulted in surface currents flowing… Advisors/Committee Members: MacLeod, Kenneth G., 1964- (advisor).

Subjects/Keywords: Paleoceanography; Geology, Stratigraphic – Ordovician; Paleontology – Ordovician; Limestone; Shale; Groups (Stratigraphy)

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APA (6^th Edition):

Putman, K. E. (2011). Neodymium and oxygen isotopic constraints on upper Ordovician paleoceanographic evolution across the Dubuque/Maquoketa contact in NE Iowa and SE Minnesota. (Thesis). University of Missouri – Columbia. Retrieved from http://hdl.handle.net/10355/11502

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):

Putman, Kelsey Erin. “Neodymium and oxygen isotopic constraints on upper Ordovician paleoceanographic evolution across the Dubuque/Maquoketa contact in NE Iowa and SE Minnesota.” 2011. Thesis, University of Missouri – Columbia. Accessed March 02, 2021. http://hdl.handle.net/10355/11502.

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

MLA Handbook (7^th Edition):

Putman, Kelsey Erin. “Neodymium and oxygen isotopic constraints on upper Ordovician paleoceanographic evolution across the Dubuque/Maquoketa contact in NE Iowa and SE Minnesota.” 2011. Web. 02 Mar 2021.

Vancouver:

Putman KE. Neodymium and oxygen isotopic constraints on upper Ordovician paleoceanographic evolution across the Dubuque/Maquoketa contact in NE Iowa and SE Minnesota. [Internet] [Thesis]. University of Missouri – Columbia; 2011. [cited 2021 Mar 02]. Available from: http://hdl.handle.net/10355/11502.

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

Council of Science Editors:

Putman KE. Neodymium and oxygen isotopic constraints on upper Ordovician paleoceanographic evolution across the Dubuque/Maquoketa contact in NE Iowa and SE Minnesota. [Thesis]. University of Missouri – Columbia; 2011. Available from: http://hdl.handle.net/10355/11502

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

Queens University

4. Armstrong, Alexis. Paleoecology, Diagenesis and Biological Affinity of Tetradiids in the Upper Ordovician (Sandbian) Black River Group of the Kingston Area, Ontario, Canada .

Degree: Geological Sciences and Geological Engineering, 2016, Queens University

URL: http://hdl.handle.net/1974/14571

► Tetradiids are a group of colonial, tubular fossils that occur globally in Middle to Upper Ordovician strata. Tetradiids were first described as a type of… (more)

▼ Tetradiids are a group of colonial, tubular fossils that occur globally in Middle to Upper Ordovician strata. Tetradiids were first described as a type of tabulate coral; however, based on their four-fold symmetry, division, and presence of a central-sparry canal, they were recently reinterpreted as a florideophyte rhodophyte algae, a reinterpretation that is tested in this thesis. This study focused on understanding the affinity and taphonomy of this order of fossil. Research was conducted by stratigraphic and petrographic analyses of the Black River Group in the Kingston, Ontario region. Tetradiid occurrences were divided into fragment or colonial, with three morphologies of tetradiids described (Tetradium, Phytopsis and Paratetradium). Morphology is specific to depositional environment, with compact Tetradium consistently within ooid grainstones and open branching Phytopsis and chained Paratetradium consistently within mudstones. Two types of patch reefs were recognized: a Paratetradium bioherm, and a Paratetradium, Phytopsis, stromatolite bioherm. The presence of bioherms implies that tetradiids were capable of hypercalcifying. Preservation styles of tetradiids were investigated, and were compared to brachiopods, echinoderms, mollusks, and ooids. Tetradiids were preferentially preserved as molds and demonstrated complete dissolution of skeletal material. Rare specimens, however, demonstrated preserved horizontal partitions, central plates, and a double wall. Skeletal molds were filled with either calcite spar, mud or encrusted by a cryptomicrobial colony. Both calcitic and aragonitic ooids were discovered. The co-occurrence of aragonitic ooids, aragonitic crytodontids, and the evolution of aragonitic, hypercalcifying tetradiids is interpreted as representing the geochemical favoring of aragonite and HMC in a time of global calcite seas. The geochemical favoring of aragonite is interpreted to be independent to global Mg: Ca ratios, but was the result of increased saturation levels and temperature driven by high atmospheric pCO2. Based on the presence of epitheca, tabulae, septa, and the commonality of growth forms, tetradiids are interpreted as an order of Cnidaria. The evolution of an aragonitic skeleton in tetradiids is interpreted to be the result of de novo acquisition of a skeleton from an unmineralized clade.

Subjects/Keywords: Geology ; Paleontology ; Ordovician ; Carbonate Sedimentology ; Aragonite

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APA (6^th Edition):

Armstrong, A. (2016). Paleoecology, Diagenesis and Biological Affinity of Tetradiids in the Upper Ordovician (Sandbian) Black River Group of the Kingston Area, Ontario, Canada . (Thesis). Queens University. Retrieved from http://hdl.handle.net/1974/14571

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):

Armstrong, Alexis. “Paleoecology, Diagenesis and Biological Affinity of Tetradiids in the Upper Ordovician (Sandbian) Black River Group of the Kingston Area, Ontario, Canada .” 2016. Thesis, Queens University. Accessed March 02, 2021. http://hdl.handle.net/1974/14571.

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

MLA Handbook (7^th Edition):

Armstrong, Alexis. “Paleoecology, Diagenesis and Biological Affinity of Tetradiids in the Upper Ordovician (Sandbian) Black River Group of the Kingston Area, Ontario, Canada .” 2016. Web. 02 Mar 2021.

Vancouver:

Armstrong A. Paleoecology, Diagenesis and Biological Affinity of Tetradiids in the Upper Ordovician (Sandbian) Black River Group of the Kingston Area, Ontario, Canada . [Internet] [Thesis]. Queens University; 2016. [cited 2021 Mar 02]. Available from: http://hdl.handle.net/1974/14571.

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

Council of Science Editors:

Armstrong A. Paleoecology, Diagenesis and Biological Affinity of Tetradiids in the Upper Ordovician (Sandbian) Black River Group of the Kingston Area, Ontario, Canada . [Thesis]. Queens University; 2016. Available from: http://hdl.handle.net/1974/14571

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

Oregon State University

5. Milstein, Randall L. The Calvin impact crater, Cass County, Michigan : identification and analysis of a subsurface ordovician astrobleme.

Degree: PhD, Geology, 1994, Oregon State University

URL: http://hdl.handle.net/1957/8989

► The Calvin impact crater is an isolated, nearly circular subsurface structure of Late Ordovician age in southwestern Michigan. The crater is defined by 110 on… (more)

▼ The Calvin impact crater is an isolated, nearly circular subsurface structure of Late Ordovician age in southwestern Michigan. The crater is defined by 110 on and gas test wells, has a rim to rim diameter of 6.2 km, an overall dimensional diameter of 8.5 km and consists of a central dome, an annular depression, and an encircling anticlinal rim. Due to the severity of subsurface disruption observed at the Calvin structure the Michigan Geological Survey considers it the most anomalous and enigmatic subsurface geologic feature in the Michigan Basin. This study models the gross morphology of the subsurface Calvin structure using multiple tools and compares the results to known impact craters. The data presented show that consistent structural and physical analogs exist between the subsurface Calvin structure and known or suspected impact craters. Combined results of seismic, gravity, magnetic, and resistivity data, suggest the Calvin structure's morphology results in structural patterns similar to those of recognized impact craters in sedimentary targets. The Calvin structure Abstract approved: exhibits recognized relationships between stratigraphic displacement and structural diameters observed in impact craters. During microscopic investigations of sample cuttings from wells in close proximity to the Calvin structure a collection of metallic microspherules were recovered. I report here, to my knowledge, for the first time, the recovery and analysis of metallic microspherules of Ordovician age. No microspherules of similar composition have been reported from other occurrences of later geologic ages. A strong body of circumstantial evidence links these stratigraphically isochronous microspherules with the formation of the Calvin structure. One other possibility for the microspherules' occurrence is that they represent an extraterrestrial component rich-layer recording a multiple Ordovician impact event on the North America mid-continent. While a considerable body of interpretive data favors an impact origin for the Calvin structure, it is the identification of shock metamorphosed quartz, a characteristic indicative of impact cratering events, that most strongly confirms the Calvin structure as an Ordovician astrombleme. Based on the available data, I conclude the subsurface Calvin structure is a buried complex impact crater and suggest it be formally recognized as the Calvin Impact Crater.

Subjects/Keywords: Geology; Stratigraphic – Ordovician

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APA (6^th Edition):

Milstein, R. L. (1994). The Calvin impact crater, Cass County, Michigan : identification and analysis of a subsurface ordovician astrobleme. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/8989

Chicago Manual of Style (16^th Edition):

Milstein, Randall L. “The Calvin impact crater, Cass County, Michigan : identification and analysis of a subsurface ordovician astrobleme.” 1994. Doctoral Dissertation, Oregon State University. Accessed March 02, 2021. http://hdl.handle.net/1957/8989.

MLA Handbook (7^th Edition):

Milstein, Randall L. “The Calvin impact crater, Cass County, Michigan : identification and analysis of a subsurface ordovician astrobleme.” 1994. Web. 02 Mar 2021.

Vancouver:

Milstein RL. The Calvin impact crater, Cass County, Michigan : identification and analysis of a subsurface ordovician astrobleme. [Internet] [Doctoral dissertation]. Oregon State University; 1994. [cited 2021 Mar 02]. Available from: http://hdl.handle.net/1957/8989.

Council of Science Editors:

Milstein RL. The Calvin impact crater, Cass County, Michigan : identification and analysis of a subsurface ordovician astrobleme. [Doctoral Dissertation]. Oregon State University; 1994. Available from: http://hdl.handle.net/1957/8989

University of Ottawa

6. Daoust, Pascale. High Resolution Stratigraphy of the Lower Silurian (Rhuddanian-Aeronian) Paleotropical Neritic Carbonates, Anticosti Island, Québec .

Degree: 2017, University of Ottawa

URL: http://hdl.handle.net/10393/36645

► Anticosti Island, located in Eastern Canada, displays one of the most complete, best exposed, and most fossiliferous carbonate successions spanning the Ordovician-Silurian (O/S) Boundary in… (more)

Subjects/Keywords: Stratigraphy; Carbonates; Chemostratigraphy; Cyclostratigraphy; Ordovician-Silurian boundary

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APA (6^th Edition):

Daoust, P. (2017). High Resolution Stratigraphy of the Lower Silurian (Rhuddanian-Aeronian) Paleotropical Neritic Carbonates, Anticosti Island, Québec . (Thesis). University of Ottawa. Retrieved from http://hdl.handle.net/10393/36645

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):

Daoust, Pascale. “High Resolution Stratigraphy of the Lower Silurian (Rhuddanian-Aeronian) Paleotropical Neritic Carbonates, Anticosti Island, Québec .” 2017. Thesis, University of Ottawa. Accessed March 02, 2021. http://hdl.handle.net/10393/36645.

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

MLA Handbook (7^th Edition):

Daoust, Pascale. “High Resolution Stratigraphy of the Lower Silurian (Rhuddanian-Aeronian) Paleotropical Neritic Carbonates, Anticosti Island, Québec .” 2017. Web. 02 Mar 2021.

Vancouver:

Daoust P. High Resolution Stratigraphy of the Lower Silurian (Rhuddanian-Aeronian) Paleotropical Neritic Carbonates, Anticosti Island, Québec . [Internet] [Thesis]. University of Ottawa; 2017. [cited 2021 Mar 02]. Available from: http://hdl.handle.net/10393/36645.

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

Council of Science Editors:

Daoust P. High Resolution Stratigraphy of the Lower Silurian (Rhuddanian-Aeronian) Paleotropical Neritic Carbonates, Anticosti Island, Québec . [Thesis]. University of Ottawa; 2017. Available from: http://hdl.handle.net/10393/36645

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

7. Sarnoski, Anthony Henry. The Stratigraphy And Depositional History Of The Deadwood Formation, With A Focus On Early Paleozoic Subsidence In The Williston Basin.

Degree: MS, Geology, 2015, University of North Dakota

URL: https://commons.und.edu/theses/1957

► The Deadwood Formation is an assemblage of siliciclastic, carbonate, and evaporite sedimentary rocks in North Dakota, South Dakota, Montana, Wyoming, Manitoba, and Saskatchewan. The… (more)

▼ The Deadwood Formation is an assemblage of siliciclastic, carbonate, and evaporite sedimentary rocks in North Dakota, South Dakota, Montana, Wyoming, Manitoba, and Saskatchewan. The majority of the lateral extent of the Deadwood Formation is in the subsurface of the Williston Basin, where it is the basal lithostratigraphic unit. Deposition began roughly 501 million years ago, as the Sauk sequence reached the exposed Precambrian igneous and metamorphic rock of the North American Craton. Six identifiable and widespread gamma ray markers occur in the well logs, dividing the formation into six informal units, label members A through F in ascending order. The initial deposits on the craton were conglomerates and sandstones of the Cambrian Member A. These sediments were overlain by glauconite rich, siltstones and fine-grained sandstones of the Cambrian and Ordovician Member B. After the deposition of Member B, three regressive-transgressive sequences took place, depositing a succession of sandstones, limestones, dolomudstones, siliciclastic mudstones, and calcareous siltstones. These deposits represent the Ordovician members, C, D, E and F. Using the thickness, depositional environments, age of each member, and other well information, tectonic subsidence values were determined using backstripping analysis. This analysis was completed by inputting all of the information into NovvaÂ®, a 1D geological modeling software released by Sirius Exploration Geochemistry Inc. Data collected from well logs and core, other data researched by the author, and information from previous works was combined with information and calculations supplied by NovvaÂ®. The results produce an accurate computation of the depositional history for the seven wells that penetrated all six members of the Deadwood Formation and the Precambrian basement. Prior to and at the start of Deadwood deposition the Williston Basin did not exist. Evidence from isopach maps created for each member of the Deadwood Formation and the results from NovvaÂ® concluded that subsidence in the area, now known as the Williston Basin, did not begin until Member C was being deposited. This places the initiation of the Williston Basin to be roughly 485 to 482 million years ago. Advisors/Committee Members: Richard D. LeFever.

Subjects/Keywords: Cambrian; Deadwood; Newporte; Ordovician; Subsidence; Williston Basin

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

APA (6^th Edition):

Sarnoski, A. H. (2015). The Stratigraphy And Depositional History Of The Deadwood Formation, With A Focus On Early Paleozoic Subsidence In The Williston Basin. (Masters Thesis). University of North Dakota. Retrieved from https://commons.und.edu/theses/1957

Chicago Manual of Style (16^th Edition):

Sarnoski, Anthony Henry. “The Stratigraphy And Depositional History Of The Deadwood Formation, With A Focus On Early Paleozoic Subsidence In The Williston Basin.” 2015. Masters Thesis, University of North Dakota. Accessed March 02, 2021. https://commons.und.edu/theses/1957.

MLA Handbook (7^th Edition):

Sarnoski, Anthony Henry. “The Stratigraphy And Depositional History Of The Deadwood Formation, With A Focus On Early Paleozoic Subsidence In The Williston Basin.” 2015. Web. 02 Mar 2021.

Vancouver:

Sarnoski AH. The Stratigraphy And Depositional History Of The Deadwood Formation, With A Focus On Early Paleozoic Subsidence In The Williston Basin. [Internet] [Masters thesis]. University of North Dakota; 2015. [cited 2021 Mar 02]. Available from: https://commons.und.edu/theses/1957.

Council of Science Editors:

Sarnoski AH. The Stratigraphy And Depositional History Of The Deadwood Formation, With A Focus On Early Paleozoic Subsidence In The Williston Basin. [Masters Thesis]. University of North Dakota; 2015. Available from: https://commons.und.edu/theses/1957

University of Missouri – Columbia

8. Quinton, Page. Oxygen isotopes from conodonts of the mid-continent, US : implications for Late Ordovician climate evolution.

Degree: 2012, University of Missouri – Columbia

URL: http://hdl.handle.net/10355/15397

► [ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] To test competing interpretations of Late Ordovician climate evolution, sea surface temperatures were estimated… (more)

Subjects/Keywords: Late Ordovician glaciation; conodont paleothermometry; oxygen isotopes

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APA (6^th Edition):

Quinton, P. (2012). Oxygen isotopes from conodonts of the mid-continent, US : implications for Late Ordovician climate evolution. (Thesis). University of Missouri – Columbia. Retrieved from http://hdl.handle.net/10355/15397

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):

Quinton, Page. “Oxygen isotopes from conodonts of the mid-continent, US : implications for Late Ordovician climate evolution.” 2012. Thesis, University of Missouri – Columbia. Accessed March 02, 2021. http://hdl.handle.net/10355/15397.

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

MLA Handbook (7^th Edition):

Quinton, Page. “Oxygen isotopes from conodonts of the mid-continent, US : implications for Late Ordovician climate evolution.” 2012. Web. 02 Mar 2021.

Vancouver:

Quinton P. Oxygen isotopes from conodonts of the mid-continent, US : implications for Late Ordovician climate evolution. [Internet] [Thesis]. University of Missouri – Columbia; 2012. [cited 2021 Mar 02]. Available from: http://hdl.handle.net/10355/15397.

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

Council of Science Editors:

Quinton P. Oxygen isotopes from conodonts of the mid-continent, US : implications for Late Ordovician climate evolution. [Thesis]. University of Missouri – Columbia; 2012. Available from: http://hdl.handle.net/10355/15397

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

Louisiana State University

9. Wright, Zachary. Neodymium Isotope Ratios and a Positive δ13C Excursion: Connecting Oceanographic and Climate Changes Near the M4-M5 Sequence Boundary of the Late Ordovician.

Degree: MS, Earth Sciences, 2015, Louisiana State University

URL: etd-07132015-141118 ; https://digitalcommons.lsu.edu/gradschool_theses/1444

► A significant positive carbon isotope excursion first described from the Guttenberg Member of the Decorah Formation in Iowa called the GICE is a defining feature… (more)

▼ A significant positive carbon isotope excursion first described from the Guttenberg Member of the Decorah Formation in Iowa called the GICE is a defining feature of Late Ordovician chemostratigraphy. It occurs near the M4-M5 sequence boundary of the Late Ordovician and has been correlated across the globe using prominent K-bentonite ash beds and conodont biomarkers. The cause of the GICE has been debated, with some arguing that it represents the initiation of a glacial period in a greenhouse climate 10 Ma before the end Ordovician glaciation and extinction. A variety of cooling signals have been identified across the M4-M5 sequence boundary support this hypothesis, but evidence contradicting this cooling hypothesis remains. Neodymium isotopes were collected from Rochester, MN, to determine if the movement of water masses over space and time played a role in the cooling signals witnessed across the M4-M5 and the GICE. Original δ13C data were collected from Dickeyville, WI, for comparison to existing carbon isotope curves showing the GICE. The GICE is well preserved at Dickeyville, WI, and plots similarly to previous studies from the area. It occurs after two significant and widespread K-bentonites (Deicke, Millbrig) and reaches excursion values characteristic of this location (~+2.0‰). εNd data from Rochester, MN, show values initially increasing, from -16.5 to -12.16 epsilon up to the Deicke K-bentonite. A shift in εNd values occurs sometime between the Millbrig and Deicke K-bentonites. After the Millbrig K-bentonite, εNd values are lower, ranging from -14.3 to -16.65. These results are indicative of high weathering rates from the nearby Precambrian shield and possibly a major regression occurring between the Millbrig and Deicke K-bentonites. However, a previously recorded δ18O decrease in the study area and lithostratigraphic evidence for a transgression across the M4-M5 conflicts with a glacially induced regression. Local tectonic quiescence during the GICE precludes a tectonically driven regression causing a low εNd weathering flux. Therefore the decrease in εNd values between the Millbrig and Deicke K-bentonites could be indicative of a climate induced spike in weathering rates. These findings imply that previous work suggesting εNd as a direct proxy for eustatic changes is complicated during periods of changing climate and weathering flux.

Subjects/Keywords: oceanography; aquafacies; M4-M5; neodymium; ordovician; conodonts

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APA (6^th Edition):

Wright, Z. (2015). Neodymium Isotope Ratios and a Positive δ13C Excursion: Connecting Oceanographic and Climate Changes Near the M4-M5 Sequence Boundary of the Late Ordovician. (Masters Thesis). Louisiana State University. Retrieved from etd-07132015-141118 ; https://digitalcommons.lsu.edu/gradschool_theses/1444

Chicago Manual of Style (16^th Edition):

Wright, Zachary. “Neodymium Isotope Ratios and a Positive δ13C Excursion: Connecting Oceanographic and Climate Changes Near the M4-M5 Sequence Boundary of the Late Ordovician.” 2015. Masters Thesis, Louisiana State University. Accessed March 02, 2021. etd-07132015-141118 ; https://digitalcommons.lsu.edu/gradschool_theses/1444.

MLA Handbook (7^th Edition):

Wright, Zachary. “Neodymium Isotope Ratios and a Positive δ13C Excursion: Connecting Oceanographic and Climate Changes Near the M4-M5 Sequence Boundary of the Late Ordovician.” 2015. Web. 02 Mar 2021.

Vancouver:

Wright Z. Neodymium Isotope Ratios and a Positive δ13C Excursion: Connecting Oceanographic and Climate Changes Near the M4-M5 Sequence Boundary of the Late Ordovician. [Internet] [Masters thesis]. Louisiana State University; 2015. [cited 2021 Mar 02]. Available from: etd-07132015-141118 ; https://digitalcommons.lsu.edu/gradschool_theses/1444.

Council of Science Editors:

Wright Z. Neodymium Isotope Ratios and a Positive δ13C Excursion: Connecting Oceanographic and Climate Changes Near the M4-M5 Sequence Boundary of the Late Ordovician. [Masters Thesis]. Louisiana State University; 2015. Available from: etd-07132015-141118 ; https://digitalcommons.lsu.edu/gradschool_theses/1444

University of British Columbia

10. Sanschagrin, Roland, Rev. Lower and middle Ordovician of the St. Lawrence lowlands stratigraphy and historical geology.

Degree: MA- MA, Geological Sciences, 1951, University of British Columbia

URL: http://hdl.handle.net/2429/41007

► The purpose of this paper is to give a brief description of the stratigraphy of the Lower and Middle Ordovician formations of the St. Lawrence… (more)

Subjects/Keywords: Geology – Stratigraphic – Ordovician

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APA (6^th Edition):

Sanschagrin, Roland, R. (1951). Lower and middle Ordovician of the St. Lawrence lowlands stratigraphy and historical geology. (Masters Thesis). University of British Columbia. Retrieved from http://hdl.handle.net/2429/41007

Chicago Manual of Style (16^th Edition):

Sanschagrin, Roland, Rev. “Lower and middle Ordovician of the St. Lawrence lowlands stratigraphy and historical geology.” 1951. Masters Thesis, University of British Columbia. Accessed March 02, 2021. http://hdl.handle.net/2429/41007.

MLA Handbook (7^th Edition):

Sanschagrin, Roland, Rev. “Lower and middle Ordovician of the St. Lawrence lowlands stratigraphy and historical geology.” 1951. Web. 02 Mar 2021.

Vancouver:

Sanschagrin, Roland R. Lower and middle Ordovician of the St. Lawrence lowlands stratigraphy and historical geology. [Internet] [Masters thesis]. University of British Columbia; 1951. [cited 2021 Mar 02]. Available from: http://hdl.handle.net/2429/41007.

Council of Science Editors:

Sanschagrin, Roland R. Lower and middle Ordovician of the St. Lawrence lowlands stratigraphy and historical geology. [Masters Thesis]. University of British Columbia; 1951. Available from: http://hdl.handle.net/2429/41007

University of Oklahoma

11. Carlucci, Jesse Robert. TRILOBITE BIOFACIES, SYSTEMATICS AND FAUNAL TURNOVER IN A SEQUENCE STRATIGRAPHIC FRAMEWORK DURING THE UPPER ORDOVICIAN OF OKLAHOMA AND VIRGINIA.

Degree: PhD, 2012, University of Oklahoma

URL: http://hdl.handle.net/11244/318751

► In the Appalachian foreland basin of the eastern United States, major sedimentologic and geochemical changes occured during the Upper Ordovician (Sandbian-Katian). The modification of ocean… (more)

Subjects/Keywords: Trilobites – Oklahoma; Trilobites – Virginia; Geology, Stratigraphic – Ordovician

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

APA (6^th Edition):

Carlucci, J. R. (2012). TRILOBITE BIOFACIES, SYSTEMATICS AND FAUNAL TURNOVER IN A SEQUENCE STRATIGRAPHIC FRAMEWORK DURING THE UPPER ORDOVICIAN OF OKLAHOMA AND VIRGINIA. (Doctoral Dissertation). University of Oklahoma. Retrieved from http://hdl.handle.net/11244/318751

Chicago Manual of Style (16^th Edition):

Carlucci, Jesse Robert. “TRILOBITE BIOFACIES, SYSTEMATICS AND FAUNAL TURNOVER IN A SEQUENCE STRATIGRAPHIC FRAMEWORK DURING THE UPPER ORDOVICIAN OF OKLAHOMA AND VIRGINIA.” 2012. Doctoral Dissertation, University of Oklahoma. Accessed March 02, 2021. http://hdl.handle.net/11244/318751.

MLA Handbook (7^th Edition):

Carlucci, Jesse Robert. “TRILOBITE BIOFACIES, SYSTEMATICS AND FAUNAL TURNOVER IN A SEQUENCE STRATIGRAPHIC FRAMEWORK DURING THE UPPER ORDOVICIAN OF OKLAHOMA AND VIRGINIA.” 2012. Web. 02 Mar 2021.

Vancouver:

Carlucci JR. TRILOBITE BIOFACIES, SYSTEMATICS AND FAUNAL TURNOVER IN A SEQUENCE STRATIGRAPHIC FRAMEWORK DURING THE UPPER ORDOVICIAN OF OKLAHOMA AND VIRGINIA. [Internet] [Doctoral dissertation]. University of Oklahoma; 2012. [cited 2021 Mar 02]. Available from: http://hdl.handle.net/11244/318751.

Council of Science Editors:

Carlucci JR. TRILOBITE BIOFACIES, SYSTEMATICS AND FAUNAL TURNOVER IN A SEQUENCE STRATIGRAPHIC FRAMEWORK DURING THE UPPER ORDOVICIAN OF OKLAHOMA AND VIRGINIA. [Doctoral Dissertation]. University of Oklahoma; 2012. Available from: http://hdl.handle.net/11244/318751

Oklahoma State University

12. Dunseith, Regina F. Fluid Histories of Middle Ordovician Fault-Fracture Dolomite Oil Fields of the Southern Michigan Basin.

Degree: Geology, 2019, Oklahoma State University

URL: http://hdl.handle.net/11244/323389

► Cement precipitating fluids in TBR oil fields likely have similar sources and timing. However, water-rock interactions along fault pathways modified source waters, giving each oil… (more)

Subjects/Keywords: dolomite; fluid inclusion; hydrothermal; michigan basin; ordovician

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APA (6^th Edition):

Dunseith, R. F. (2019). Fluid Histories of Middle Ordovician Fault-Fracture Dolomite Oil Fields of the Southern Michigan Basin. (Thesis). Oklahoma State University. Retrieved from http://hdl.handle.net/11244/323389

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):

Dunseith, Regina F. “Fluid Histories of Middle Ordovician Fault-Fracture Dolomite Oil Fields of the Southern Michigan Basin.” 2019. Thesis, Oklahoma State University. Accessed March 02, 2021. http://hdl.handle.net/11244/323389.

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

MLA Handbook (7^th Edition):

Dunseith, Regina F. “Fluid Histories of Middle Ordovician Fault-Fracture Dolomite Oil Fields of the Southern Michigan Basin.” 2019. Web. 02 Mar 2021.

Vancouver:

Dunseith RF. Fluid Histories of Middle Ordovician Fault-Fracture Dolomite Oil Fields of the Southern Michigan Basin. [Internet] [Thesis]. Oklahoma State University; 2019. [cited 2021 Mar 02]. Available from: http://hdl.handle.net/11244/323389.

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

Council of Science Editors:

Dunseith RF. Fluid Histories of Middle Ordovician Fault-Fracture Dolomite Oil Fields of the Southern Michigan Basin. [Thesis]. Oklahoma State University; 2019. Available from: http://hdl.handle.net/11244/323389

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

University of Missouri – Columbia

13. Quinton, Page. The Ordovician climate : constraints from carbon and oxygen isotopes.

Degree: 2016, University of Missouri – Columbia

URL: https://doi.org/10.32469/10355/56832

► The Ordovician Period (483 – 443 Ma) is an attractive interval to study for understanding the earth's climatic system because of the juxtaposition of climatic… (more)

▼ The Ordovician Period (483 – 443 Ma) is an attractive interval to study for understanding the earth's climatic system because of the juxtaposition of climatic extremes. The Period is marked by major shifts in climatic conditions, increases in marine biodiversity (GOBE: Great Ordovician Biodiversification event), and the 2nd largest mass extinction event of the Phanerozoic. Uncertainty regarding the evolution of the Ordovician climate, however, complicates attempts to relate climatic and paleontological changes to various climatic forcing's (e.g. atmospheric CO2, tectonics, ocean circulation). This project was designed to test competing models for the evolution of Ordovician climate using stable oxygen and carbon isotopic measurements from North America and Australia. I measured carbon isotopic values from carbonates and trace organic matter to provide a record of fluctuations in the carbon cycle and used oxygen isotopic values measured from bioapatite (conodont elements and brachiopod shells) to infer trends in sea surface temperatures and test for climatic cooling during the Ordovician. Samples discussed come from seven sections in eastern North America and seven sections from New South Wales, Australia, coverage that allow for consideration of local, regional, and global influences on geochemical records. From these results I conclude that measured trends primarily reflect global to regional paleoenvironmental patterns. As such, these results improve knowledge of the evolution of the Ordovician climate. Carbon isotopic results are consistent with a drawdown of atmospheric CO2 during the early Late Ordovician; however, the lack of evidence for associated cooling at the same time suggests that any changes were not large enough to cause resolvable climatic cooling. Instead, oxygen isotopic results suggest that the climatic cooling and glaciation was confined to the last stage of the Ordovician (Hirnantian). Finally, inferred cooling in the Early to Middle Ordovician strengthens arguments that climate played an important role in the Great Ordovician Biodiversification event. Advisors/Committee Members: MacLeod, Kenneth G., 1964- (advisor).

Subjects/Keywords: Ordovician Geologic Period; Climatic changes; Isotope geology

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APA (6^th Edition):

Quinton, P. (2016). The Ordovician climate : constraints from carbon and oxygen isotopes. (Thesis). University of Missouri – Columbia. Retrieved from https://doi.org/10.32469/10355/56832

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):

Quinton, Page. “The Ordovician climate : constraints from carbon and oxygen isotopes.” 2016. Thesis, University of Missouri – Columbia. Accessed March 02, 2021. https://doi.org/10.32469/10355/56832.

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

MLA Handbook (7^th Edition):

Quinton, Page. “The Ordovician climate : constraints from carbon and oxygen isotopes.” 2016. Web. 02 Mar 2021.

Vancouver:

Quinton P. The Ordovician climate : constraints from carbon and oxygen isotopes. [Internet] [Thesis]. University of Missouri – Columbia; 2016. [cited 2021 Mar 02]. Available from: https://doi.org/10.32469/10355/56832.

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

Council of Science Editors:

Quinton P. The Ordovician climate : constraints from carbon and oxygen isotopes. [Thesis]. University of Missouri – Columbia; 2016. Available from: https://doi.org/10.32469/10355/56832

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

University of California – Riverside

14. Dahl, Robyn Mieko. The Environmental Context of Gastropods on Western Laurentia (Basin and Range Province) During the Great Ordovician Biodiversification Event.

Degree: Geological Sciences, 2015, University of California – Riverside

URL: http://www.escholarship.org/uc/item/6j7358m5

► Gastropods are a major component of modern marine ecosystems and can be found in nearly every type of marine ecosystem. They experienced their first notable… (more)

▼ Gastropods are a major component of modern marine ecosystems and can be found in nearly every type of marine ecosystem. They experienced their first notable radiation during the Great Ordovician Biodiversification Event (~470 Ma), during which their diversity tripled. This study examines the gastropod assemblage preserved in the Basin and Range Province of the Western United States to establish the environmental context for the Ordovician gastropod radiation. Gastropods are present within every facies examined, but their relative abundance and distribution varies. Gastropods are rare in normal marine settings and abundant in harsh (i.e., dysoxic, hypersaline) environments. Their environmental context is shown to impact survivorship through the end-Ordovician extinction event and throughout the Paleozoic and Mesozoic.Collecting accurate density data for fossil deposits can prove challenging, especially when beds are not exposed in plane view. In these cases, paleontologists are tasked with reconstructing shellbed density from cross section exposure. This study presents a mathematical model to calculate the density of fossil material within a bed from bedding cross section counts. The model is calibrated against an Ordovician biofacies comprised of oncoids, macluritid gastropods and receptaculitids exposed in the Arrow Canyon Range of Southern Nevada, where unique preservation provides both cross section exposures and plan view of fossil concentrations.University Earth Science Departments seeking to establish impactful geoscience outreach programs often pursue large-scale, grant funded programs. While this type of outreach is highly successful, it is also extremely costly, and grant funding can be difficult to secure. Here, we present the Geoscience Education Outreach Program (GEOP), a small-scale, very affordable model tested over five years in the Department of Earth Sciences at UCR. GEOP provides a variety of outreach events and allows UCR Earth Sciences to participate in a wide range of community events. The GEOP model prioritizes simplicity, flexibility and affordability in order to best meet the educational needs of Riverside County, CA.

Subjects/Keywords: Paleontology; Geology; Science education; Gastropoda; Geoscience Education; Great Basin; Great Ordovician Biodiversification Event; Laurentia; Ordovician

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APA (6^th Edition):

Dahl, R. M. (2015). The Environmental Context of Gastropods on Western Laurentia (Basin and Range Province) During the Great Ordovician Biodiversification Event. (Thesis). University of California – Riverside. Retrieved from http://www.escholarship.org/uc/item/6j7358m5

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):

Dahl, Robyn Mieko. “The Environmental Context of Gastropods on Western Laurentia (Basin and Range Province) During the Great Ordovician Biodiversification Event.” 2015. Thesis, University of California – Riverside. Accessed March 02, 2021. http://www.escholarship.org/uc/item/6j7358m5.

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

MLA Handbook (7^th Edition):

Dahl, Robyn Mieko. “The Environmental Context of Gastropods on Western Laurentia (Basin and Range Province) During the Great Ordovician Biodiversification Event.” 2015. Web. 02 Mar 2021.

Vancouver:

Dahl RM. The Environmental Context of Gastropods on Western Laurentia (Basin and Range Province) During the Great Ordovician Biodiversification Event. [Internet] [Thesis]. University of California – Riverside; 2015. [cited 2021 Mar 02]. Available from: http://www.escholarship.org/uc/item/6j7358m5.

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

Council of Science Editors:

Dahl RM. The Environmental Context of Gastropods on Western Laurentia (Basin and Range Province) During the Great Ordovician Biodiversification Event. [Thesis]. University of California – Riverside; 2015. Available from: http://www.escholarship.org/uc/item/6j7358m5

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

The Ohio State University

15. Edwards, Cole T. Carbon, sulfur, and strontium isotope stratigraphy of the Lower-Middle Ordovician, Great Basin, USA: Implications for oxygenation and causes of global biodiversification.

Degree: PhD, Geological Sciences, 2014, The Ohio State University

URL: http://rave.ohiolink.edu/etdc/view?acc_num=osu1405797089

► This chemostratigraphic study uses new carbon (d13C) and sulfur (d34S) isotope data measured from Lower–Middle Ordovician carbonate rocks from the Great Basin region, USA. The… (more)

▼ This chemostratigraphic study uses new carbon (d13C) and sulfur (d34S) isotope data measured from Lower–Middle Ordovician carbonate rocks from the Great Basin region, USA. The Pogonip Group was sampled at meter-scale from Shingle Pass (east-central Nevada) and the Ibex area (western Utah) to integrate the stable isotope stratigraphy with a well-studied conodont biostratigraphic framework. The Pogonip Group is a succession of mixed carbonate and siliciclastic rocks that accumulated on a carbonate ramp under normal marine conditions during the Late Cambrian to Middle Ordovician. The d13C trend has four distinct characteristics recognized in both Great Basin sections: 1) a drop in d13C from +1‰ at the base of the Ordovician (Tremadocian) to -0.7‰, 2) a 1–2‰ positive d13C shift during the late Tremadocian, 3) a gradual d13C increase from -2‰ to ca. 0‰ during the end of the Early Ordovician (Floian), and 4) a steady d13C decrease from 0‰ to -4 to -5‰ during Middle Ordovician (Dapingian–Darriwilian). The d34S trend measured from carbonate-associated sulfate (CAS) at Shingle Pass has an overall decrease from +35‰ during the Tremadocian to +20 to +25‰ during the Floian. A 15‰ negative excursion is present near the Dapingian-Darriwilian boundary before d34S values increase up to +35‰ at the top of the section. Corresponding d34S measured from sedimentary pyrite shows an overall similar drop in the Lower Ordovician but pyrite d34S values are more variable. During the early Tremadocian Stage pyrite d34S varies between 0 to +20‰ but makes a major drop of 20‰ during the late Tremadocian to values between -10–0‰ throughout the Floian and Dapingian Stages. Pyrite d34S increases gradually near the Dapingian-Darriwilian boundary to values between +10 to +20‰ at the top of the section. The Lower–Middle Ordovician d13C and d34S trends reported here from the Great Basin are not consistent with a causal mechanism involving sea level change and subsequent migration of isotopically distinct water bodies. Instead, these isotope data most likely reflect primary seawater chemistry and changes in d13C and d34S on a global scale. This interpretation is supported by the excellent correlation of d13C and d34S to other isotopic trends reported from Argentina, Newfoundland, and global compilation data sets. These correlations, in conjunction with strontium isotope (87Sr/86Sr) data measured from conodont apatite and bulk carbonate, are consistent with published conodont biostratigraphic data and provide an integrated and high-resolution bio-chemostratigraphic framework for the Early–Middle Ordovician sedimentary record of the Laurentian margin. Long-term d13C and d34S trends indicate two pulses of oxygenation occurred during periods of increased burial rates of organic matter and pyrite. These oxygenation pulses are roughly coincident with the first major biodiversification pulses during the Middle Ordovician and suggest that increasing oxygen levels played an important role in global biodiversity. Continued research focused on resolving the precise… Advisors/Committee Members: Saltzman, Matthew (Advisor).

Subjects/Keywords: Geology; Geochemistry; carbon isotopes; sulfur isotopes; strontium isotopes; stratigraphy; Ordovician; Great Ordovician Biodiversification Event; oxygenation

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APA (6^th Edition):

Edwards, C. T. (2014). Carbon, sulfur, and strontium isotope stratigraphy of the Lower-Middle Ordovician, Great Basin, USA: Implications for oxygenation and causes of global biodiversification. (Doctoral Dissertation). The Ohio State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=osu1405797089

Chicago Manual of Style (16^th Edition):

Edwards, Cole T. “Carbon, sulfur, and strontium isotope stratigraphy of the Lower-Middle Ordovician, Great Basin, USA: Implications for oxygenation and causes of global biodiversification.” 2014. Doctoral Dissertation, The Ohio State University. Accessed March 02, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=osu1405797089.

MLA Handbook (7^th Edition):

Edwards, Cole T. “Carbon, sulfur, and strontium isotope stratigraphy of the Lower-Middle Ordovician, Great Basin, USA: Implications for oxygenation and causes of global biodiversification.” 2014. Web. 02 Mar 2021.

Vancouver:

Edwards CT. Carbon, sulfur, and strontium isotope stratigraphy of the Lower-Middle Ordovician, Great Basin, USA: Implications for oxygenation and causes of global biodiversification. [Internet] [Doctoral dissertation]. The Ohio State University; 2014. [cited 2021 Mar 02]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1405797089.

Council of Science Editors:

Edwards CT. Carbon, sulfur, and strontium isotope stratigraphy of the Lower-Middle Ordovician, Great Basin, USA: Implications for oxygenation and causes of global biodiversification. [Doctoral Dissertation]. The Ohio State University; 2014. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1405797089

Brock University

16. Wang, Lisha. Chemostratigraphy of the Uppermost Cambrian Below the Ordovician GSSP .

Degree: Department of Earth Sciences, Brock University

URL: http://hdl.handle.net/10464/13331

► Chemostratigraphy is an important tool for correlating layered sedimentary rock successions. Preserved/near primary carbon isotope signatures in marine carbonates can provide high-resolution profiles for sedimentary… (more)

▼ Chemostratigraphy is an important tool for correlating layered sedimentary rock successions. Preserved/near primary carbon isotope signatures in marine carbonates can provide high-resolution profiles for sedimentary sequences supplementing the need for distinguishing fossils from different depositional environments and those lacking fossil materials. The Global Boundary Stratotype Section and Point (GSSP) of the Cambrian‒Ordovician boundary is located at Green Point in the Green Point Formation of the Cow Head Group in western Newfoundland, Canada. To reconstruct a continuous and high-resolution chemostratigraphy from the Cambrian‒Ordovician boundary to the Furongian Series Stage 10, we included the δ13C results of the Green Point Formation covering the Ordovician GSSP interval (Azmy et al., 2014). The Green Point Formation through the base of Ordovician GSSP consists of alternating dark gray to black shale and thin ribbon limestone rhythmites, with few fossils. The samples are micritic limestone, dolomitic limestone, and dolostone. They were determined to be in primary to near-primary condition based on multiple screening tests. Cathodoluminescence screening reveals dull to bright luminescence of the samples indicative of good preservation for many of them. The δ13Ccarb and δ18O values of the Green Point carbonates range from -6.44‰ to +0.33‰ (VPDB) and from -8.63‰ to -5.67‰ (VPDB), respectively, with poor correlation. Mn/Sr ratios range from 0.63 to 9.82, with no correlation to δ13Ccarb, but with ratios supporting the near primary nature of the δ13C values. Carbon isotope compositions of the Green Point Formation below the Ordovician GSSP fluctuate but remaine essentially invariantly negative. The δ13C values reveal a negative excursion at and below the Cambrian‒Ordovician boundary, which may correlate with the Top of Cambrian Carbon Isotope Excursion (TOCE) and its significant negative excursion. A nadir of -6.44 ‰ at the base of the Eoconodontus conodont zone marks the proposed GSSP for the base of the Furongian Series Stage 10. The lower excursion may be correlated with the Hellnmaria-Red Tops Boundary (HERB) carbon isotope excursion found in sequences in the United States of America, Australia, and north China. Without an adequate record of conodonts, high-resolution chemostratigraphic trends of carbon isotope compositions facilitate the correlation of intercontinental and intracontinental sequences.

Subjects/Keywords: Ordovician GSSP; carbon isotope values; Cambrian‒Ordovician; Newfoundland; chemostratigraphy

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

APA (6^th Edition):

Wang, L. (n.d.). Chemostratigraphy of the Uppermost Cambrian Below the Ordovician GSSP . (Thesis). Brock University. Retrieved from http://hdl.handle.net/10464/13331

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):

Wang, Lisha. “Chemostratigraphy of the Uppermost Cambrian Below the Ordovician GSSP .” Thesis, Brock University. Accessed March 02, 2021. http://hdl.handle.net/10464/13331.

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):

Wang, Lisha. “Chemostratigraphy of the Uppermost Cambrian Below the Ordovician GSSP .” Web. 02 Mar 2021.

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

Vancouver:

Wang L. Chemostratigraphy of the Uppermost Cambrian Below the Ordovician GSSP . [Internet] [Thesis]. Brock University; [cited 2021 Mar 02]. Available from: http://hdl.handle.net/10464/13331.

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:

Wang L. Chemostratigraphy of the Uppermost Cambrian Below the Ordovician GSSP . [Thesis]. Brock University; Available from: http://hdl.handle.net/10464/13331

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

Penn State University

17. Sclafani, Judith. Morphological change in response to mass extinction: a case study of Strophomenida (Brachiopoda) at the Late Ordovician.

Degree: 2019, Penn State University

URL: https://submit-etda.libraries.psu.edu/catalog/17207jas1169

► There have been five mass extinctions throughout the Phanerozoic, all of which were caused by catastrophic disruptions to the earth system and resulted in significant… (more)

Subjects/Keywords: Late Ordovician mass extinction; recovery; morphometrics; paleoecology; evolutionary history

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

APA (6^th Edition):

Sclafani, J. (2019). Morphological change in response to mass extinction: a case study of Strophomenida (Brachiopoda) at the Late Ordovician. (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/17207jas1169

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):

Sclafani, Judith. “Morphological change in response to mass extinction: a case study of Strophomenida (Brachiopoda) at the Late Ordovician.” 2019. Thesis, Penn State University. Accessed March 02, 2021. https://submit-etda.libraries.psu.edu/catalog/17207jas1169.

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

MLA Handbook (7^th Edition):

Sclafani, Judith. “Morphological change in response to mass extinction: a case study of Strophomenida (Brachiopoda) at the Late Ordovician.” 2019. Web. 02 Mar 2021.

Vancouver:

Sclafani J. Morphological change in response to mass extinction: a case study of Strophomenida (Brachiopoda) at the Late Ordovician. [Internet] [Thesis]. Penn State University; 2019. [cited 2021 Mar 02]. Available from: https://submit-etda.libraries.psu.edu/catalog/17207jas1169.

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

Council of Science Editors:

Sclafani J. Morphological change in response to mass extinction: a case study of Strophomenida (Brachiopoda) at the Late Ordovician. [Thesis]. Penn State University; 2019. Available from: https://submit-etda.libraries.psu.edu/catalog/17207jas1169

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

Penn State University

18. Perkons, Eriks. The Contribution of Regional Variability to Beta Diversity: A Case Study of the Deep-water Marine Communities of the Middle Upper Ordovician of Eastern Laurentia.

Degree: 2016, Penn State University

URL: https://submit-etda.libraries.psu.edu/catalog/28782

► The structure and recurrence of marine invertebrate communities along depth gradients have been recent and productive research subjects among paleobiologists studying evolutionary patterns and biostratigraphic… (more)

▼ The structure and recurrence of marine invertebrate communities along depth gradients have been recent and productive research subjects among paleobiologists studying evolutionary patterns and biostratigraphic correlation. However, the extent to which these communities vary across regional spatial scales (beta diversity) has received comparatively little attention despite being a potential source for the observed increase in gamma diversity through the Paleozoic. The fauna of the middle Upper Ordovician Salona and Coburn Formations of the Trenton group carbonates were investigated to quantitatively study community compositions along a deep subtidal to offshore gradient. The deep subtidal through offshore biofacies have previously been under-sampled, so detailed examination of these strata provides much needed quantitative community data. High resolution (5 cm scale) stratigraphic analysis, coupled with extensive fossil collection from several exposures in central Pennsylvania, allows for identification of biofacies through cluster analysis, and faunal depth preferences through detrended correspondence analysis (DCA). These biofacies, and the ecologic preferences of their taxa, were then compared with previously reported collections from the Trenton Falls area of New York, and central Kentucky near Frankfort. While several comparable biofacies were identified, most did not have obvious counterparts in other collections. Those that were comparable varied greatly between locales, despite a high degree of taxonomic overlap. Ecological parameters of individual taxa were similarly not highly conserved, and all three locales contained numerous endemic taxa. Taxonomic dissimilarity between locations increases with greater geographic distance. Variations occurred over regional geographic scales, but not all correlate directly with distance, suggesting that regional and local variation may be a potential underappreciated source of diversity within provinces. Advisors/Committee Members: MARK E PATZKOWSKY, Thesis Advisor/Co-Advisor, Peter Daniel Wilf, Thesis Advisor/Co-Advisor, Michael Allan Arthur, Thesis Advisor/Co-Advisor.

Subjects/Keywords: Paleontology; Paleoecology; Geobiology; Ordovician; Trenton; Gradient; Biofacies; Beta diversity; Salona; Coburn

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APA (6^th Edition):

Perkons, E. (2016). The Contribution of Regional Variability to Beta Diversity: A Case Study of the Deep-water Marine Communities of the Middle Upper Ordovician of Eastern Laurentia. (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/28782

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):

Perkons, Eriks. “The Contribution of Regional Variability to Beta Diversity: A Case Study of the Deep-water Marine Communities of the Middle Upper Ordovician of Eastern Laurentia.” 2016. Thesis, Penn State University. Accessed March 02, 2021. https://submit-etda.libraries.psu.edu/catalog/28782.

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

MLA Handbook (7^th Edition):

Perkons, Eriks. “The Contribution of Regional Variability to Beta Diversity: A Case Study of the Deep-water Marine Communities of the Middle Upper Ordovician of Eastern Laurentia.” 2016. Web. 02 Mar 2021.

Vancouver:

Perkons E. The Contribution of Regional Variability to Beta Diversity: A Case Study of the Deep-water Marine Communities of the Middle Upper Ordovician of Eastern Laurentia. [Internet] [Thesis]. Penn State University; 2016. [cited 2021 Mar 02]. Available from: https://submit-etda.libraries.psu.edu/catalog/28782.

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

Council of Science Editors:

Perkons E. The Contribution of Regional Variability to Beta Diversity: A Case Study of the Deep-water Marine Communities of the Middle Upper Ordovician of Eastern Laurentia. [Thesis]. Penn State University; 2016. Available from: https://submit-etda.libraries.psu.edu/catalog/28782

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

19. Wheeling, Spencer. Origin And Preservation Of Organic-Rich Zones And Kukersite Beds Of The Red River Formation (Upper Ordovician), Williston Basin, North Dakota.

Degree: PhD, Geology, 2018, University of North Dakota

URL: https://commons.und.edu/theses/2379

► The Red River Formation is North Dakotaâs third most productive hydrocarbon unit. The unit has been interpreted to be self-sourced, but the locations of… (more)

Subjects/Keywords: Dolomitization; Gloeocapsomorpha prisca; Kukersite; Ordovician; Red River Formation; Williston Basin

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APA (6^th Edition):

Wheeling, S. (2018). Origin And Preservation Of Organic-Rich Zones And Kukersite Beds Of The Red River Formation (Upper Ordovician), Williston Basin, North Dakota. (Doctoral Dissertation). University of North Dakota. Retrieved from https://commons.und.edu/theses/2379

Chicago Manual of Style (16^th Edition):

Wheeling, Spencer. “Origin And Preservation Of Organic-Rich Zones And Kukersite Beds Of The Red River Formation (Upper Ordovician), Williston Basin, North Dakota.” 2018. Doctoral Dissertation, University of North Dakota. Accessed March 02, 2021. https://commons.und.edu/theses/2379.

MLA Handbook (7^th Edition):

Wheeling, Spencer. “Origin And Preservation Of Organic-Rich Zones And Kukersite Beds Of The Red River Formation (Upper Ordovician), Williston Basin, North Dakota.” 2018. Web. 02 Mar 2021.

Vancouver:

Wheeling S. Origin And Preservation Of Organic-Rich Zones And Kukersite Beds Of The Red River Formation (Upper Ordovician), Williston Basin, North Dakota. [Internet] [Doctoral dissertation]. University of North Dakota; 2018. [cited 2021 Mar 02]. Available from: https://commons.und.edu/theses/2379.

Council of Science Editors:

Wheeling S. Origin And Preservation Of Organic-Rich Zones And Kukersite Beds Of The Red River Formation (Upper Ordovician), Williston Basin, North Dakota. [Doctoral Dissertation]. University of North Dakota; 2018. Available from: https://commons.und.edu/theses/2379

West Virginia University

20. Beech, James Desmond. Death-defying Morphologies: Mass Extinction and Disparity in the Order Harpetida.

Degree: MS, Geology and Geography, 2019, West Virginia University

URL: https://doi.org/10.33915/etd.4064 ; https://researchrepository.wvu.edu/etd/4064

► The trilobite order Harpetida has long been easily recognized but poorly understood. This study seeks to better understand the phylogenetic relationships within Harpetida, with… (more)

Subjects/Keywords: extinction; disparity; end-Ordovician; morphospace; phylogeny; trilobites; Paleobiology; Paleontology

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APA (6^th Edition):

Beech, J. D. (2019). Death-defying Morphologies: Mass Extinction and Disparity in the Order Harpetida. (Thesis). West Virginia University. Retrieved from https://doi.org/10.33915/etd.4064 ; https://researchrepository.wvu.edu/etd/4064

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):

Beech, James Desmond. “Death-defying Morphologies: Mass Extinction and Disparity in the Order Harpetida.” 2019. Thesis, West Virginia University. Accessed March 02, 2021. https://doi.org/10.33915/etd.4064 ; https://researchrepository.wvu.edu/etd/4064.

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

MLA Handbook (7^th Edition):

Beech, James Desmond. “Death-defying Morphologies: Mass Extinction and Disparity in the Order Harpetida.” 2019. Web. 02 Mar 2021.

Vancouver:

Beech JD. Death-defying Morphologies: Mass Extinction and Disparity in the Order Harpetida. [Internet] [Thesis]. West Virginia University; 2019. [cited 2021 Mar 02]. Available from: https://doi.org/10.33915/etd.4064 ; https://researchrepository.wvu.edu/etd/4064.

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

Council of Science Editors:

Beech JD. Death-defying Morphologies: Mass Extinction and Disparity in the Order Harpetida. [Thesis]. West Virginia University; 2019. Available from: https://doi.org/10.33915/etd.4064 ; https://researchrepository.wvu.edu/etd/4064

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

University of Wisconsin – Madison

21. Atkinson, Robert Forest, 1940-. Conodonts from the Middle Ordovician Platteville Formation in Wisconsin.

Degree: 1969, University of Wisconsin – Madison

URL: http://digital.library.wisc.edu/1793/7076

99 leaves : ill. ; 29 cm.

Subjects/Keywords: Conodonts; Paleontology – Wisconsin – Ordovician

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APA (6^th Edition):

Atkinson, Robert Forest, 1. (1969). Conodonts from the Middle Ordovician Platteville Formation in Wisconsin. (Thesis). University of Wisconsin – Madison. Retrieved from http://digital.library.wisc.edu/1793/7076

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):

Atkinson, Robert Forest, 1940-. “Conodonts from the Middle Ordovician Platteville Formation in Wisconsin.” 1969. Thesis, University of Wisconsin – Madison. Accessed March 02, 2021. http://digital.library.wisc.edu/1793/7076.

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

MLA Handbook (7^th Edition):

Atkinson, Robert Forest, 1940-. “Conodonts from the Middle Ordovician Platteville Formation in Wisconsin.” 1969. Web. 02 Mar 2021.

Vancouver:

Atkinson, Robert Forest 1. Conodonts from the Middle Ordovician Platteville Formation in Wisconsin. [Internet] [Thesis]. University of Wisconsin – Madison; 1969. [cited 2021 Mar 02]. Available from: http://digital.library.wisc.edu/1793/7076.

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

Council of Science Editors:

Atkinson, Robert Forest 1. Conodonts from the Middle Ordovician Platteville Formation in Wisconsin. [Thesis]. University of Wisconsin – Madison; 1969. Available from: http://digital.library.wisc.edu/1793/7076

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

Colorado State University

22. Cigri, Ali Riza. Depositional environment and facies architecture of the Lower to Middle Ordovician carbonate ramp succession, Öland, southern Sweden.

Degree: MS(M.S.), Geosciences, 2014, Colorado State University

URL: http://hdl.handle.net/10217/88619

► The Lower to Middle Ordovician carbonates of Öland, southern Sweden, exhibit outcrops of up to 12 m thickness and rest conformably on Cambrian black shales… (more)

▼ The Lower to Middle Ordovician carbonates of Öland, southern Sweden, exhibit outcrops of up to 12 m thickness and rest conformably on Cambrian black shales of the Alum Formation. Based on lithological and sedimentological characteristics, nine carbonate facies were identified within the successions that are grouped into four facies associations (FAs). FA 1 is composed of glauconite- bearing mud- to wackestone facies. FA 2 consists of three glauconite- and one glauconite- and Fe-ooid bearing mud- to packestone carbonate facies. Deposits of FA 3 are carbonate mud- to wackestone facies. FA 4 is characterized by one Fe- ooid bearing and four other mud- to packstone carbonate facies. The studied carbonate succession is subdivided into three stratigraphic units referred to as Intervals 1 to 3. Interval 1 consists of the Köpingsklint and Bruddesta Formations located at the base of the succession. Interval 2 is composed of the Horns Udde formation in the middle level of the succession, and Interval 3 is characterized by the Gillberga Formation situated at the top of the succession. FA 1 rocks were deposited in an offshore proximal setting, whereas FA 2 records an offshore distal setting during "starved" times. FA 3 and FA 4 rocks were deposited during the "normal" times reflecting offshore proximal and distal settings, respectively. Heterozoan assemblages, allochthonous Fe- ooids, and abundance of carbonate mud within the facies suggest that the studied carbonate succession experienced temperate to sub-tropical sea-water conditions during deposition despite its paleo-latitudes equivalence to what would be temperate to cool-water environments of modern examples. Three 3rd order sequences having regressive systems tracts (RSTs) and transgressive systems tracts (TSTs) bounded by maximum regressive surfaces (MRSs) were determined within the studied succession based on the transgressive versus regressive sequence stratigraphic model. The MRSs are situated at the top of the RSTs reflecting maximum sea-level drops. Interval 1 is interpreted to represent both TST and RST characterized by glauconite-bearing facies, and have a sequence boundary (MRS) at the base. Interval 2 contains two sequence boundaries (MRSs) and is comprised of two TST and one RST characterized by carbonate facies. Interval 3 has a sequence boundary (MRS) at the top and is composed of one RST discriminated by glauconite-bearing facies. The Lower to Middle Ordovician carbonates and their subsurface equivalence have high potential in terms of conventional and unconventional petroleum exploration based on their lithologic character and positions in the Paleozoic petroleum system in the Baltic Sea of Scandinavia and adjacent areas. Advisors/Committee Members: Egenhoff, Sven (advisor), Ridley, John (committee member), Çavdar, Gamze (committee member).

Subjects/Keywords: carbonate rocks; Southern Sweden; petroleum; Öland; Lower to Middle Ordovician

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APA (6^th Edition):

Cigri, A. R. (2014). Depositional environment and facies architecture of the Lower to Middle Ordovician carbonate ramp succession, Öland, southern Sweden. (Masters Thesis). Colorado State University. Retrieved from http://hdl.handle.net/10217/88619

Chicago Manual of Style (16^th Edition):

Cigri, Ali Riza. “Depositional environment and facies architecture of the Lower to Middle Ordovician carbonate ramp succession, Öland, southern Sweden.” 2014. Masters Thesis, Colorado State University. Accessed March 02, 2021. http://hdl.handle.net/10217/88619.

MLA Handbook (7^th Edition):

Cigri, Ali Riza. “Depositional environment and facies architecture of the Lower to Middle Ordovician carbonate ramp succession, Öland, southern Sweden.” 2014. Web. 02 Mar 2021.

Vancouver:

Cigri AR. Depositional environment and facies architecture of the Lower to Middle Ordovician carbonate ramp succession, Öland, southern Sweden. [Internet] [Masters thesis]. Colorado State University; 2014. [cited 2021 Mar 02]. Available from: http://hdl.handle.net/10217/88619.

Council of Science Editors:

Cigri AR. Depositional environment and facies architecture of the Lower to Middle Ordovician carbonate ramp succession, Öland, southern Sweden. [Masters Thesis]. Colorado State University; 2014. Available from: http://hdl.handle.net/10217/88619

University of Ottawa

23. Mauviel, Alain. Integrated High-Resolution Chemostratigraphic and Cyclostratigraphic Analysis of the Paleotropical Carbonates Spanning the Ordovician-Silurian Boundary at the West End of Anticosti Island, Eastern Canada .

Degree: 2017, University of Ottawa

URL: http://hdl.handle.net/10393/35644

► The carbonate storm-dominated sedimentary succession superbly exposed on Anticosti Island in Eastern Canada represents one of the most complete and well-preserved paleotropical stratigraphic records spanning… (more)

Subjects/Keywords: Ordovician-Silurian boundary; δ13C and δ18O Chemostratigraphy; Cyclostratigraphy; Anticosti Island

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APA (6^th Edition):

Mauviel, A. (2017). Integrated High-Resolution Chemostratigraphic and Cyclostratigraphic Analysis of the Paleotropical Carbonates Spanning the Ordovician-Silurian Boundary at the West End of Anticosti Island, Eastern Canada . (Thesis). University of Ottawa. Retrieved from http://hdl.handle.net/10393/35644

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):

Mauviel, Alain. “Integrated High-Resolution Chemostratigraphic and Cyclostratigraphic Analysis of the Paleotropical Carbonates Spanning the Ordovician-Silurian Boundary at the West End of Anticosti Island, Eastern Canada .” 2017. Thesis, University of Ottawa. Accessed March 02, 2021. http://hdl.handle.net/10393/35644.

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

MLA Handbook (7^th Edition):

Mauviel, Alain. “Integrated High-Resolution Chemostratigraphic and Cyclostratigraphic Analysis of the Paleotropical Carbonates Spanning the Ordovician-Silurian Boundary at the West End of Anticosti Island, Eastern Canada .” 2017. Web. 02 Mar 2021.

Vancouver:

Mauviel A. Integrated High-Resolution Chemostratigraphic and Cyclostratigraphic Analysis of the Paleotropical Carbonates Spanning the Ordovician-Silurian Boundary at the West End of Anticosti Island, Eastern Canada . [Internet] [Thesis]. University of Ottawa; 2017. [cited 2021 Mar 02]. Available from: http://hdl.handle.net/10393/35644.

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

Council of Science Editors:

Mauviel A. Integrated High-Resolution Chemostratigraphic and Cyclostratigraphic Analysis of the Paleotropical Carbonates Spanning the Ordovician-Silurian Boundary at the West End of Anticosti Island, Eastern Canada . [Thesis]. University of Ottawa; 2017. Available from: http://hdl.handle.net/10393/35644

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

24. Losso, Sarah. A new genus of dimeropygid trilobites from the Great Basin of the western USA.

Degree: MS, Geoscience, 2018, University of Iowa

URL: https://ir.uiowa.edu/etd/6182

► Dimeropygidae Hupé, 1953 is a family of highly vaulted and small trilobites from the paleotropics of the uppermost Cambrian through the Ordovician. Specimens are… (more)

▼ Dimeropygidae Hupé, 1953 is a family of highly vaulted and small trilobites from the paleotropics of the uppermost Cambrian through the Ordovician. Specimens are known from Laurentia, Baltica, Avalonia, Siberia, Australia, North China, and South China. Dimeropygids are difficult to recover because of their small size and vaulted, tuberculate, and often spiny exoskeletons. Thus, most of their diversity is known from secondarily silicified material which preserves remarkable amounts of detail on the sclerites. Such faunas, while often rare, are common in the Great Basin of the western USA. Trilobite research has been conducted in the Great Basin has been since the late 1800s. Recent high intensity sampling and collection of larger sample sized from silicified horizons has increased the known diversity of trilobites from Lower Early Ordovician. New collections from the Lower Ordovician are providing crucial new insight into the groups early evolutionary history (e.g., Adrain & Westrop, 2007, McAdams & Adrain, 2009, Adrain et al., 2014a). Skullrockicurus n. gen. is a new genus of dimeropygid trilobites including at least seven new species. Five of the new species are well known enough from silicified material to formally name: S. greeni (Garden City Formation, Idaho and House Formation, Utah), S. plummeri (House Formation, Utah), S. judyi (House Formation, Utah), S. massarellai (House Formation, Utah), and S. brocki (House Formation, Utah). Synapomorphies of the new genus include four pairs of tubercles on the glabella, a posteriorly bowed glabella, long preglabellar field, and semilunate pygidium with a corona of tubercles or spines at the fulcrum. Advisors/Committee Members: Adrain, Jonathan M. (supervisor).

Subjects/Keywords: Ordovician; Silicified; Systematics; Trilobite

…and tuberculate trilobites with a temporal range from the Cambrian to end-Ordovician. The… …distribution with in the low latitudes during the Middle and Late Ordovician. Fossils are known from… …of the western USA. Until recently, dimeropygids were mostly known from Upper Ordovician… …collections from the Lower Ordovician of the Great Basin have proven critical for revealing the… …Blackhillsian) which correlates globally with the Lower Ordovician (Ross et al., 1997)…

13 more images…

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APA (6^th Edition):

Losso, S. (2018). A new genus of dimeropygid trilobites from the Great Basin of the western USA. (Masters Thesis). University of Iowa. Retrieved from https://ir.uiowa.edu/etd/6182

Chicago Manual of Style (16^th Edition):

Losso, Sarah. “A new genus of dimeropygid trilobites from the Great Basin of the western USA.” 2018. Masters Thesis, University of Iowa. Accessed March 02, 2021. https://ir.uiowa.edu/etd/6182.

MLA Handbook (7^th Edition):

Losso, Sarah. “A new genus of dimeropygid trilobites from the Great Basin of the western USA.” 2018. Web. 02 Mar 2021.

Vancouver:

Losso S. A new genus of dimeropygid trilobites from the Great Basin of the western USA. [Internet] [Masters thesis]. University of Iowa; 2018. [cited 2021 Mar 02]. Available from: https://ir.uiowa.edu/etd/6182.

Council of Science Editors:

Losso S. A new genus of dimeropygid trilobites from the Great Basin of the western USA. [Masters Thesis]. University of Iowa; 2018. Available from: https://ir.uiowa.edu/etd/6182

University of Western Ontario

25. Sproat, Colin D. Evolution, Paleoecology, and Paleobiogeography of the Late Ordovician Brachiopod Fauna of Laurentia.

Degree: 2016, University of Western Ontario

URL: https://ir.lib.uwo.ca/etd/4174

► During the early Katian (Late Ordovician), the North American craton was being inundated due to a major eustatic sea level rise and regional subsidence associated… (more)

▼ During the early Katian (Late Ordovician), the North American craton was being inundated due to a major eustatic sea level rise and regional subsidence associated with the ongoing Taconic orogeny. The Trentonian brachiopod fauna, as a dominant group of the marine shelly benthos at that time, evolved and invaded the expanding epicontinental seas. Three Trentonian brachiopod lineages were studied to trace their evolution. The Rostricellula-Rhynchotrema-Hiscobeccus lineage was characterized by an increase in shell size, globosity, and frilled lamellae, with Hiscobeccus becoming a prominent component of the Late Ordovician epicontinental brachiopod fauna. Parastrophina is a widely reported but non-dominant taxon of the Trentonian brachiopod fauna in eastern North America. This study clarified details of the internal structures of the type species, P. hemiplicata, and quantified the high degree of intraspecific variability, particularly the development of ribs, fold, and sulcus. This has led to the recognition of Parastrophina tarimensis from northwest China as a new species. Plectorthis is another key taxa of the Trentonian fauna, previously reported from several tectonic paleoplates. By examining the type species, P. plicatella, from the Cincinnati area in this study, the diagnostic characters of the genus were defined, which provided a basis for evaluating the North American and global distribution and diversity of this genus and a more accurate paleobiogeographic analysis. Multivariate analyses of the Trentonian brachiopod collections from Manitoulin Island and the Lake Simcoe area in Ontario, in conjunction with other Trentonian faunas from North America, demonstrated that during the early stage of the Late Ordovician (early Katian) sea level rise and marine inundation of the continental interior, the epicontinental sea brachiopod fauna began to separate from the older pericratonic faunas. In Ontario, this is reflected by the brachiopod fauna of Lake Simcoe being more closely related to the Scoto-Appalachian fauna, and that of Manitoulin Island most similar to those in the intracratonic basins (e.g. Minnesota).

Subjects/Keywords: Brachiopoda; Late Ordovician; Trentonian; early Katian; Chatfieldian; evolution; paleobiodiversity; paleogeography; Paleontology

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APA (6^th Edition):

Sproat, C. D. (2016). Evolution, Paleoecology, and Paleobiogeography of the Late Ordovician Brachiopod Fauna of Laurentia. (Thesis). University of Western Ontario. Retrieved from https://ir.lib.uwo.ca/etd/4174

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):

Sproat, Colin D. “Evolution, Paleoecology, and Paleobiogeography of the Late Ordovician Brachiopod Fauna of Laurentia.” 2016. Thesis, University of Western Ontario. Accessed March 02, 2021. https://ir.lib.uwo.ca/etd/4174.

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

MLA Handbook (7^th Edition):

Sproat, Colin D. “Evolution, Paleoecology, and Paleobiogeography of the Late Ordovician Brachiopod Fauna of Laurentia.” 2016. Web. 02 Mar 2021.

Vancouver:

Sproat CD. Evolution, Paleoecology, and Paleobiogeography of the Late Ordovician Brachiopod Fauna of Laurentia. [Internet] [Thesis]. University of Western Ontario; 2016. [cited 2021 Mar 02]. Available from: https://ir.lib.uwo.ca/etd/4174.

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

Council of Science Editors:

Sproat CD. Evolution, Paleoecology, and Paleobiogeography of the Late Ordovician Brachiopod Fauna of Laurentia. [Thesis]. University of Western Ontario; 2016. Available from: https://ir.lib.uwo.ca/etd/4174

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

Texas Tech University

26. Wallis, Thomas Irvin. Stratigraphy of the Ordovician Maravillas Formation.

Degree: 1958, Texas Tech University

URL: http://hdl.handle.net/2346/10108

► Study of the bryozoan fauna of the Ordovician Maravilllas Formation in trans-Pecos Texas indicates that the major portion of the formation is of Richmondian age.… (more)

Subjects/Keywords: Geology; Geology – Texas; Stratigraphic – Ordovician

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APA (6^th Edition):

Wallis, T. I. (1958). Stratigraphy of the Ordovician Maravillas Formation. (Thesis). Texas Tech University. Retrieved from http://hdl.handle.net/2346/10108

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):

Wallis, Thomas Irvin. “Stratigraphy of the Ordovician Maravillas Formation.” 1958. Thesis, Texas Tech University. Accessed March 02, 2021. http://hdl.handle.net/2346/10108.

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

MLA Handbook (7^th Edition):

Wallis, Thomas Irvin. “Stratigraphy of the Ordovician Maravillas Formation.” 1958. Web. 02 Mar 2021.

Vancouver:

Wallis TI. Stratigraphy of the Ordovician Maravillas Formation. [Internet] [Thesis]. Texas Tech University; 1958. [cited 2021 Mar 02]. Available from: http://hdl.handle.net/2346/10108.

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

Council of Science Editors:

Wallis TI. Stratigraphy of the Ordovician Maravillas Formation. [Thesis]. Texas Tech University; 1958. Available from: http://hdl.handle.net/2346/10108

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

Brock University

27. Davis, Alyssa M. Atmospheric and environmental interpretations of Early Paleozoic halite (Upper Ordovician, Hudson Bay Basin, & Upper Silurian, Michigan Basin) .

Degree: Department of Earth Sciences, Brock University

URL: http://hdl.handle.net/10464/13769

► Halite sourced from Upper Ordovician strata (Red Head Rapids Formation) in the Hudson Bay Basin and Upper Silurian strata (Salina Group A-2 and B units)… (more)

▼ Halite sourced from Upper Ordovician strata (Red Head Rapids Formation) in the Hudson Bay Basin and Upper Silurian strata (Salina Group A-2 and B units) in the Michigan Basin was used to interpret atmospheric and environmental conditions during their respective depositional periods. Primary halite was distinguished from secondary or diagenetically altered halite using screening parameters consisting of petrography, trace element analysis, microthermometry and gas analysis of fluid inclusions. Primary halite preserves liquid and/or liquid-vapour cubic fluid inclusions within chevrons and fluid inclusion bands whereas secondary halite contains large, irregularly-shaped fluid inclusions. Petrographic analysis highlights the coexistence of primary and secondary fluid inclusions within some sample sets. Trace element analysis suggests that the deposits of the Hudson Bay and Michigan Basins were likely affected by periodic freshening that altered the trace element concentrations. Homogenization temperatures of the Upper Silurian halite range from 13.3 – 35.2°C which agree with expected paleoclimatic conditions. The contemporaneous occurrence of primary, depositional halite with secondary, diagenetic halite is noted during the crush fast scan method of gas analysis by mass spectrometry. Diagenetic influences are clearly reflected in the gas analysis results of some halite samples. In part, they reflect the influence of degradation and/or thermal maturation of organic matter and hydrocarbon migration subsequent to halite deposition. Atmospheric oxygen content in the primary halite from the Red Head Rapids Formation (Upper Ordovician) ranges from 13.5 to 19 %, whereas in the Salina Group A-2 and B units (Upper Silurian) it falls between 20 and 26 %. The measured values of atmospheric oxygen based on Upper Ordovician halite overlap with the range of oxygen modelled by Berner (2006) and Algeo & Ingall (2007), and the values of atmospheric oxygen of Upper Silurian halite correspond to values modelled by Berner (2006; 2009).

Subjects/Keywords: halite paleoatmosphere Silurian Ordovician

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APA (6^th Edition):

Davis, A. M. (n.d.). Atmospheric and environmental interpretations of Early Paleozoic halite (Upper Ordovician, Hudson Bay Basin, & Upper Silurian, Michigan Basin) . (Thesis). Brock University. Retrieved from http://hdl.handle.net/10464/13769

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):

Davis, Alyssa M. “Atmospheric and environmental interpretations of Early Paleozoic halite (Upper Ordovician, Hudson Bay Basin, & Upper Silurian, Michigan Basin) .” Thesis, Brock University. Accessed March 02, 2021. http://hdl.handle.net/10464/13769.

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):

Davis, Alyssa M. “Atmospheric and environmental interpretations of Early Paleozoic halite (Upper Ordovician, Hudson Bay Basin, & Upper Silurian, Michigan Basin) .” Web. 02 Mar 2021.

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

Vancouver:

Davis AM. Atmospheric and environmental interpretations of Early Paleozoic halite (Upper Ordovician, Hudson Bay Basin, & Upper Silurian, Michigan Basin) . [Internet] [Thesis]. Brock University; [cited 2021 Mar 02]. Available from: http://hdl.handle.net/10464/13769.

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:

Davis AM. Atmospheric and environmental interpretations of Early Paleozoic halite (Upper Ordovician, Hudson Bay Basin, & Upper Silurian, Michigan Basin) . [Thesis]. Brock University; Available from: http://hdl.handle.net/10464/13769

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

University of Tennessee – Knoxville

28. Henderson, Miles Anthony. Ocean Circulation as a Driver for Changes in Ocean Chemistry in the Middle Ordovician of Argentina.

Degree: 2018, University of Tennessee – Knoxville

URL: https://trace.tennessee.edu/utk_graddiss/4885

► The Ordovician is a critical period of Earth evolution where we observe a dramatic increase in the diversity of marine organisms called the Great Ordovician… (more)

▼ The Ordovician is a critical period of Earth evolution where we observe a dramatic increase in the diversity of marine organisms called the Great Ordovician Biodiversification Event (GOBE). Major pulses in biodiversity of marine phytoplankton are identified in the Middle Ordovician during the GOBE suggesting dramatic changes in nutrient budgets of the shallow oceans. Additionally, carbon isotope evidence suggesting changeover from a greenhouse climate state to an icehouse climate state is also identified in the Middle Ordovician. Disruption of the Early Ordovician stratified ocean with invigorated ocean circulation associated with global cooling through the Middle Ordovician would lead to increased ventilation and upwelling of nutrient rich anoxic deep-waters potentially driving the biodiversity trends observed during the GOBE. Evidence of such a mixing event in the Middle Ordovician may recorded as the globally recognized Middle Darriwilian Isotope Carbon Excursion (MDICE).In this study, I explore the potential for disruption of ocean stratification driven by global cooling in the Middle Ordovician by investigating the isotopic compositions of carbon, sulfur, strontium, and neodymium from the Precordillera of Argentina, which contains distinct marine facies representing coeval, yet distinct, water depths. In Chapter 1, I evaluate the carbon isotope composition of marine carbonate and organic carbon. Paired C-isotope profiles show decoupling of carbon isotope compositions between shallow- and deep-water environments and confirms the presence of a strong chemocline in the Darriwilian. In Chapter 2, I characterize potential changes in redox conditions in the Precordillera through the sulfur isotope record of carbonate associated sulfate (CAS) and pyrite. Variation in the behavior of marine sulfur between shallow, more oxygenated surface waters and between deeper-water environments, below the marine chemocline is consistent with increased oxygenation of the deep-ocean in the Middle Ordovician. In Chapter 3, I determined the isotopic compositions of neodymium and strontium to explore the potential for physical stratification of the Middle Ordovician water column. Neodymium and strontium isotope compositions show decoupling between shallow- and deep-water environments suggesting physical stratification of the water column in addition to dynamic stratification indicated in the biogeochemical records of carbon and sulfur.

Subjects/Keywords: Middle Ordovician; Paleocenography; carbon isotopes; sulfur isotopes; strontium isotopes; neodymium isotopes

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

APA (6^th Edition):

Henderson, M. A. (2018). Ocean Circulation as a Driver for Changes in Ocean Chemistry in the Middle Ordovician of Argentina. (Doctoral Dissertation). University of Tennessee – Knoxville. Retrieved from https://trace.tennessee.edu/utk_graddiss/4885

Chicago Manual of Style (16^th Edition):

Henderson, Miles Anthony. “Ocean Circulation as a Driver for Changes in Ocean Chemistry in the Middle Ordovician of Argentina.” 2018. Doctoral Dissertation, University of Tennessee – Knoxville. Accessed March 02, 2021. https://trace.tennessee.edu/utk_graddiss/4885.

MLA Handbook (7^th Edition):

Henderson, Miles Anthony. “Ocean Circulation as a Driver for Changes in Ocean Chemistry in the Middle Ordovician of Argentina.” 2018. Web. 02 Mar 2021.

Vancouver:

Henderson MA. Ocean Circulation as a Driver for Changes in Ocean Chemistry in the Middle Ordovician of Argentina. [Internet] [Doctoral dissertation]. University of Tennessee – Knoxville; 2018. [cited 2021 Mar 02]. Available from: https://trace.tennessee.edu/utk_graddiss/4885.

Council of Science Editors:

Henderson MA. Ocean Circulation as a Driver for Changes in Ocean Chemistry in the Middle Ordovician of Argentina. [Doctoral Dissertation]. University of Tennessee – Knoxville; 2018. Available from: https://trace.tennessee.edu/utk_graddiss/4885

29. Nicholls, Keith H. A geoconservation perspective on the trace fossil record associated with the end-Ordovician mass extinction and glaciation in the Welsh Basin.

Degree: PhD, 2019, University of Chester

URL: http://hdl.handle.net/10034/622234

► In this thesis I have illustrated the value of our geological heritage and geodiversity by focussing on a particular detailed aspect of the geological and… (more)

Subjects/Keywords: trace fossil record; Welsh Basin; end-Ordovician mass exinction; geoconservation

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APA (6^th Edition):

Nicholls, K. H. (2019). A geoconservation perspective on the trace fossil record associated with the end-Ordovician mass extinction and glaciation in the Welsh Basin. (Doctoral Dissertation). University of Chester. Retrieved from http://hdl.handle.net/10034/622234

Chicago Manual of Style (16^th Edition):

Nicholls, Keith H. “A geoconservation perspective on the trace fossil record associated with the end-Ordovician mass extinction and glaciation in the Welsh Basin.” 2019. Doctoral Dissertation, University of Chester. Accessed March 02, 2021. http://hdl.handle.net/10034/622234.

MLA Handbook (7^th Edition):

Nicholls, Keith H. “A geoconservation perspective on the trace fossil record associated with the end-Ordovician mass extinction and glaciation in the Welsh Basin.” 2019. Web. 02 Mar 2021.

Vancouver:

Nicholls KH. A geoconservation perspective on the trace fossil record associated with the end-Ordovician mass extinction and glaciation in the Welsh Basin. [Internet] [Doctoral dissertation]. University of Chester; 2019. [cited 2021 Mar 02]. Available from: http://hdl.handle.net/10034/622234.

Council of Science Editors:

Nicholls KH. A geoconservation perspective on the trace fossil record associated with the end-Ordovician mass extinction and glaciation in the Welsh Basin. [Doctoral Dissertation]. University of Chester; 2019. Available from: http://hdl.handle.net/10034/622234

Louisiana State University

30. Callen, John Michael. In Situ Geochemistry of Middle Ordovician Dolomites of the Upper Mississippi Valley: Evaluation of the Dorag Model and New Implications for Dolomitizing Fluids.

Degree: MS, Earth Sciences, 2016, Louisiana State University

URL: etd-02092016-224832 ; https://digitalcommons.lsu.edu/gradschool_theses/1941

► The dolomitization and diagenetic history of Ordovician carbonates of southern Wisconsin has been studied for over a century. Previous studies attributed dolomitization to various single… (more)

▼ The dolomitization and diagenetic history of Ordovician carbonates of southern Wisconsin has been studied for over a century. Previous studies attributed dolomitization to various single or multiple diagenetic factors and environments. The goal of the study was to resolve arguments regarding dolomitization models, including Badiozamani’s often cited but recently questioned mixing zone model, using LA-ICP-MS focusing on REE to determine the nature of dolomitizing fluids. Analysis revealed that particulate material incorporated into the dolomite affected the geochemical results of many of the samples. Integrating geochemical data with petrographic evidence for diagenetic history, the studied Decorah Formation dolomites were assigned to two realms: shallow burial and hydrothermal. Shallow burial dolomites exhibit three distinct REE patterns. Dolomite from the middle portion of the Guttenberg formed inside a trilobite fossil maintained a seawater-like REE pattern, while dolomite in lime mud inside this fossil and dolomite in micrite from another sample in this interval exhibit LREE enrichment consistent with early burial. Carimona, Specht’s Ferry, and Lower Guttenberg dolomites are often burrow associated and exhibit MREE enrichment associated with Fe-oxide desorption in anoxic porewaters. The proximity of these dolomites to samples to K-bentonite beds is interpreted as having been the result of Mg leaching from the volcanic ash during alteration. Extensively dolomitized samples in the upper Guttenberg and Ion Member exhibit evidence of hydrothermal dolomitization. The relation of these heavily dolomitized samples to interbedded limestones provides evidence for a recently proposed hydrothermal dolomitization model invoking pressure solution of calcite and precipitation of dolomite. These early burial and hydrothermal depositional models are consistent with models proposed for overlying and underlying Ordovician dolomites. This study revealed no evidence of extensive dolomitization due to Badiozamani’s mixing zone model. Due to the location of this outcrop relative to the Wisconsin Arch, this study cannot directly disprove that dolomitization in eastern Wisconsin is the result of Badiozamani’s Dorag dolomitization. Despite this, Luczaj’s argument that the Dorag model should not have been widely applied to dolomites of the southern Wisconsin area seems appropriate.

Subjects/Keywords: upper mississippi valley; ordovician; geochemistry; laser ablation; ICP-MS; dolomite

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

APA (6^th Edition):

Callen, J. M. (2016). In Situ Geochemistry of Middle Ordovician Dolomites of the Upper Mississippi Valley: Evaluation of the Dorag Model and New Implications for Dolomitizing Fluids. (Masters Thesis). Louisiana State University. Retrieved from etd-02092016-224832 ; https://digitalcommons.lsu.edu/gradschool_theses/1941

Chicago Manual of Style (16^th Edition):

Callen, John Michael. “In Situ Geochemistry of Middle Ordovician Dolomites of the Upper Mississippi Valley: Evaluation of the Dorag Model and New Implications for Dolomitizing Fluids.” 2016. Masters Thesis, Louisiana State University. Accessed March 02, 2021. etd-02092016-224832 ; https://digitalcommons.lsu.edu/gradschool_theses/1941.

MLA Handbook (7^th Edition):

Callen, John Michael. “In Situ Geochemistry of Middle Ordovician Dolomites of the Upper Mississippi Valley: Evaluation of the Dorag Model and New Implications for Dolomitizing Fluids.” 2016. Web. 02 Mar 2021.

Vancouver:

Callen JM. In Situ Geochemistry of Middle Ordovician Dolomites of the Upper Mississippi Valley: Evaluation of the Dorag Model and New Implications for Dolomitizing Fluids. [Internet] [Masters thesis]. Louisiana State University; 2016. [cited 2021 Mar 02]. Available from: etd-02092016-224832 ; https://digitalcommons.lsu.edu/gradschool_theses/1941.

Council of Science Editors:

Callen JM. In Situ Geochemistry of Middle Ordovician Dolomites of the Upper Mississippi Valley: Evaluation of the Dorag Model and New Implications for Dolomitizing Fluids. [Masters Thesis]. Louisiana State University; 2016. Available from: etd-02092016-224832 ; https://digitalcommons.lsu.edu/gradschool_theses/1941

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