subject:(eolian fluvial)

Texas A&M University

1. Gutierrez Azuaje, Maria Antonieta. Spatial Variations in Eolian Stratigraphic Architecture of the Norphlet Formation, Southwestern Alabama.

Degree: MS, Geology, 2016, Texas A&M University

URL: http://hdl.handle.net/1969.1/158062

► In modern eolian dune fields, dune-field patterns arise from the autogenic behavior of dunes and the external environmental conditions within these interactions operate. When autogenic… (more)

▼ In modern eolian dune fields, dune-field patterns arise from the autogenic behavior of dunes and the external environmental conditions within these interactions operate. When autogenic behaviors alone are considered, a generic pattern emerges with little variability in the pattern but much spatial variability arises as a dune-field pattern emerges within a set of boundary conditions. One way in which this variability is expressed in modern dune fields is by an increase in crest line spacing and decrease of defect density away from a sand source area. To determine if this dune pattern behavior is apparent in the eolian rock record, we studied the Upper Jurassic Norphlet Formation with the aim of inferring the stratigraphic configuration of a limited area, based on the detailed facies analysis and their vertical and lateral variations from three cores recovered at increasing distance from inferred upland source areas. Detailed facies interpretation was performed and eolian set and grainflow thickness were measured in three cores. Results indicate that spatial and temporal depositional changes occurred in the system during Norphlet Formation deposition, evidenced by lateral facies variability from fluvial-eolian to mainly eolian deposition in the erg center. Facies identified include interdune, wadi, eolian dune, sandsheet and marine facies. Spatially the dune field transitioned from a fluvially dominated margin with small eolian sets to an eolian dominated dune-field center with the thickest overall sets. An increase in set thickness and decrease in the total number of first order bounding surfaces moving away from the sediment source were identified, with set thickness ranging between 1 to 6 m in the erg center. Preserved grainflow thickness shows a positive correlation with distance from the sediment paleosource, with a significant population between 0.5 and 1.6 cm thick for the middle and distal locations. Temporal changes transitioned upward from wet interdune strata to wadi and dry dune facies, to an interval of sandsheets that grades to marine deposits. Foreset strata orientation from dipmeters indicates scatter bedding directions for the updip location but a narrower distribution in Hatters Pond (SW) and Mobile Bay (SE-E), suggesting these as the prevailing wind directions in those areas. The succession implies a relative sea level rise at the end of the Norphlet deposition. Interpreted climatic conditions suggest a wetter fluvio-eolian system prevailed in the updip location that changed to a dryer dune dominated area in the dune field center. The transition to the uppermost Norphlet section characterized by sandsheets and marine siltstones, indicates a combination of decrease in sediment availability, increase in sea level, and increase in water table level, leading to cessation of eolian deposition. Advisors/Committee Members: Ewing, Ryan C (advisor), Pope, Michael (committee member), Houser, Chris (committee member).

Subjects/Keywords: Eolian stratigraphy; Norphlet; grainflow thickness; eolian-fluvial systems; ancient dunes

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APA (6^th Edition):

Gutierrez Azuaje, M. A. (2016). Spatial Variations in Eolian Stratigraphic Architecture of the Norphlet Formation, Southwestern Alabama. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/158062

Chicago Manual of Style (16^th Edition):

Gutierrez Azuaje, Maria Antonieta. “Spatial Variations in Eolian Stratigraphic Architecture of the Norphlet Formation, Southwestern Alabama.” 2016. Masters Thesis, Texas A&M University. Accessed April 12, 2021. http://hdl.handle.net/1969.1/158062.

MLA Handbook (7^th Edition):

Gutierrez Azuaje, Maria Antonieta. “Spatial Variations in Eolian Stratigraphic Architecture of the Norphlet Formation, Southwestern Alabama.” 2016. Web. 12 Apr 2021.

Vancouver:

Gutierrez Azuaje MA. Spatial Variations in Eolian Stratigraphic Architecture of the Norphlet Formation, Southwestern Alabama. [Internet] [Masters thesis]. Texas A&M University; 2016. [cited 2021 Apr 12]. Available from: http://hdl.handle.net/1969.1/158062.

Council of Science Editors:

Gutierrez Azuaje MA. Spatial Variations in Eolian Stratigraphic Architecture of the Norphlet Formation, Southwestern Alabama. [Masters Thesis]. Texas A&M University; 2016. Available from: http://hdl.handle.net/1969.1/158062

University of Toronto

2. Hassan, Muhammad Sadeed. Outcrop Based Facies and Architecture Analysis of the Regional Intertonguing of Early Jurassic Kayenta Formation with the Navajo Sandstone, Kanab Canyon, Utah.

Degree: 2015, University of Toronto

URL: http://hdl.handle.net/1807/79801

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The establishment of the extensive Navajo erg can be identified in the Lower Jurassic rocks of the Kanab Canyon area by three distinct and successively… (more)

Subjects/Keywords: Eolian sedimentology; Fluvial sedimentology; Utah; 0594

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APA (6^th Edition):

Hassan, M. S. (2015). Outcrop Based Facies and Architecture Analysis of the Regional Intertonguing of Early Jurassic Kayenta Formation with the Navajo Sandstone, Kanab Canyon, Utah. (Masters Thesis). University of Toronto. Retrieved from http://hdl.handle.net/1807/79801

Chicago Manual of Style (16^th Edition):

Hassan, Muhammad Sadeed. “Outcrop Based Facies and Architecture Analysis of the Regional Intertonguing of Early Jurassic Kayenta Formation with the Navajo Sandstone, Kanab Canyon, Utah.” 2015. Masters Thesis, University of Toronto. Accessed April 12, 2021. http://hdl.handle.net/1807/79801.

MLA Handbook (7^th Edition):

Hassan, Muhammad Sadeed. “Outcrop Based Facies and Architecture Analysis of the Regional Intertonguing of Early Jurassic Kayenta Formation with the Navajo Sandstone, Kanab Canyon, Utah.” 2015. Web. 12 Apr 2021.

Vancouver:

Hassan MS. Outcrop Based Facies and Architecture Analysis of the Regional Intertonguing of Early Jurassic Kayenta Formation with the Navajo Sandstone, Kanab Canyon, Utah. [Internet] [Masters thesis]. University of Toronto; 2015. [cited 2021 Apr 12]. Available from: http://hdl.handle.net/1807/79801.

Council of Science Editors:

Hassan MS. Outcrop Based Facies and Architecture Analysis of the Regional Intertonguing of Early Jurassic Kayenta Formation with the Navajo Sandstone, Kanab Canyon, Utah. [Masters Thesis]. University of Toronto; 2015. Available from: http://hdl.handle.net/1807/79801

Colorado State University

3. Grabowski, Julia. Logjam attenuation of annual sediment waves in eolian-fluvial environments, North Park, Colorado.

Degree: MS(M.S.), Geosciences, 2020, Colorado State University

URL: http://hdl.handle.net/10217/211986

► Sediment waves, a term that describes the fluvial transport of a discrete sediment influx, have long been studied in regard to channel response to infrequent,… (more)

▼ Sediment waves, a term that describes the fluvial transport of a discrete sediment influx, have long been studied in regard to channel response to infrequent, catastrophic events, such as mass movements or dam removal. However, few researchers have studied (1) the potential presence of sediment waves of annual or sub-annual scale in mixed eolian-fluvial geomorphic environments or (2) the role of large wood in sediment wave dispersal. This study addresses both topics through observations of North Sand Creek and East Sand Creek, which flow alongside the active sand dunes of North Sand Hills and East Sand Hills, respectively, in North Park, Colorado. The creeks experience similar seasonal, asynchronous cycles of eolian influx and fluvial transport, although North Sand Creek likely receives a greater volume of eolian sand due to intensive Off-Highway Vehicle (OHV) recreation on the North Sand Hills dunefield. Linear spectral unmixing of Landsat imagery from 1984-2019 is used to determine whether OHV recreation has resulted in vegetation loss, typically associated with elevated eolian flux, on North Sand Hills. Repeat photography and repeat measurement of terrace-like structures are used to determine whether each creek experiences a sediment wave, and repeat measurement of logjam sand wedge volume is used to examine changes in sand storage associated with logjams over time. Results indicate that North Sand Hills hast lost vegetative cover in areas not fenced-off to OHV users at a rate of ~800 m2/year, and that North Sand Creek experiences a highly translative sediment wave that is attenuated by logjams. East Sand Hills, on the other hand, has gained vegetative cover throughout the dunefield, and East Sand Creek does not experience a sediment wave. The sediment wave at North Sand Creek translates rapidly through the area of channel outside of the logjam backwater and translates more slowly through logjam backwater areas—principally through reduction in the length of logjam sand wedges, rather than reduction in depth. Advisors/Committee Members: Wohl, Ellen (advisor), McGrath, Daniel (committee member), Morrison, Ryan (committee member).

Subjects/Keywords: OHV impact; spectral unmixing; sediment wave; eolian-fluvial

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APA (6^th Edition):

Grabowski, J. (2020). Logjam attenuation of annual sediment waves in eolian-fluvial environments, North Park, Colorado. (Masters Thesis). Colorado State University. Retrieved from http://hdl.handle.net/10217/211986

Chicago Manual of Style (16^th Edition):

Grabowski, Julia. “Logjam attenuation of annual sediment waves in eolian-fluvial environments, North Park, Colorado.” 2020. Masters Thesis, Colorado State University. Accessed April 12, 2021. http://hdl.handle.net/10217/211986.

MLA Handbook (7^th Edition):

Grabowski, Julia. “Logjam attenuation of annual sediment waves in eolian-fluvial environments, North Park, Colorado.” 2020. Web. 12 Apr 2021.

Vancouver:

Grabowski J. Logjam attenuation of annual sediment waves in eolian-fluvial environments, North Park, Colorado. [Internet] [Masters thesis]. Colorado State University; 2020. [cited 2021 Apr 12]. Available from: http://hdl.handle.net/10217/211986.

Council of Science Editors:

Grabowski J. Logjam attenuation of annual sediment waves in eolian-fluvial environments, North Park, Colorado. [Masters Thesis]. Colorado State University; 2020. Available from: http://hdl.handle.net/10217/211986

4. Amarante, Francyne Bochi do. Arquitetura de fácies e evolução estratigráfica da For-Mação Tacuarembó, Bacia Norte – UY.

Degree: 2017, Brazil

URL: http://hdl.handle.net/10183/153394

►

A Formação Tacuarembó (Jurássico Superior – Cretáceo Inferior), subdividida em Membro Batoví e Membro Rivera, aflora na região norte do Uruguai, nos departamentos de Rivera… (more)

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A Formação Tacuarembó (Jurássico Superior – Cretáceo Inferior), subdividida em Membro Batoví e Membro Rivera, aflora na região norte do Uruguai, nos departamentos de Rivera e Tacuarembó. O objetivo principal deste trabalho é a análise sedimentológica e estratigráfi-ca da Formação Tacuarembó, através da caracterização faciológica, a reconstrução dos modelos deposicionais e a definição das relações de contato entre os membros Batoví e Rivera. Para alcançar tal objetivo, foi realizado o levantamento, na escala 1:50, de um tes-temunho e de quarenta e uma seções colunares, estas divididas em sete transectas com base em sua distribuição espacial. Como resultado, foram detalhadas litofácies posterior-mente agrupadas em diferentes associações de fácies. O Membro Batoví é constituído por associações de fácies de (1) dunas eólicas, (2) lençóis de areia eólicos, (3) canais fluviais efêmeros, (4) canais fluviais perenes entrelaçados e (5) deltas. O Membro Rivera, por sua vez, é constituído essencialmente por associações de fácies de dunas eólicas. A intercala-ção entre depósitos fluviais, eólicos e deltaicos, com predominância de associações fluviais sugere que o Membro Batoví representa o modelo deposicional de porção distal de um sis-tema fluvial distributário Já o Membro Rivera caracteriza-se pelo sucessivo cavalgamento de dunas eólicas, sem a ocorrência de depósitos de interdunas úmidas ou encharcadas, definindo um sistema eólico seco. A mudança abrupta de sistemas deposicionais, marcada por uma superfície plana, por vezes com concentração de clastos, indica a existência de uma discordância entre os membros Batoví e Rivera. Aliado a isto, a mudança no modelo deposicional sugere uma alteração climática, passando de um clima arido a semi-árido du-rante a deposição do Membro Batoví, para um clima hiperárido ao longo da deposição do Membro Rivera.

The Tacuarembó Formation (Upper Jurassic - Lower Cretaceous), subdivided into Batoví Member and Rivera Member, crops in the northern region of Uruguay, in the Rivera and Tacuarembó departments. The main objective of the present work is the sedimentological and estratigraphic analysis of the Tacuarembó Formation, through the faciological charac-terization, reconstruction of the depositional models and definition of contact relations be-tween the Batoví and Rivera members. To reach such objective, a well-log and forty-one columnar sections were surveyed in a scale 1:50, and later the columnar sections were di-vided into seven transects, based on their spatial position. As a result, lithofacies were de-tailed and later grouped in different facies associations.The Batoví Member consists of associations of facies of (1) eolian dunes, (2) eolian sand sheets, (3) ephemeral fluvial channels, (4) perennial braided fluvial channels and (5) deltaic. On the other hand, the Ri-vera Member, is essentially constituted by facies associations eolian dunes. The intercala-tion between fluvial, eolian and deltaic deposits, with predominance of fluvial associations, suggests that the Batoví Member…

Advisors/Committee Members: Scherer, Claiton Marlon dos Santos.

Subjects/Keywords: Sistema deposicional; Distal distributary fluvial systems; Eolian depositional systems; Batoví Member; Rivera Member; North Basin.

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APA (6^th Edition):

Amarante, F. B. d. (2017). Arquitetura de fácies e evolução estratigráfica da For-Mação Tacuarembó, Bacia Norte – UY. (Masters Thesis). Brazil. Retrieved from http://hdl.handle.net/10183/153394

Chicago Manual of Style (16^th Edition):

Amarante, Francyne Bochi do. “Arquitetura de fácies e evolução estratigráfica da For-Mação Tacuarembó, Bacia Norte – UY.” 2017. Masters Thesis, Brazil. Accessed April 12, 2021. http://hdl.handle.net/10183/153394.

MLA Handbook (7^th Edition):

Amarante, Francyne Bochi do. “Arquitetura de fácies e evolução estratigráfica da For-Mação Tacuarembó, Bacia Norte – UY.” 2017. Web. 12 Apr 2021.

Vancouver:

Amarante FBd. Arquitetura de fácies e evolução estratigráfica da For-Mação Tacuarembó, Bacia Norte – UY. [Internet] [Masters thesis]. Brazil; 2017. [cited 2021 Apr 12]. Available from: http://hdl.handle.net/10183/153394.

Council of Science Editors:

Amarante FBd. Arquitetura de fácies e evolução estratigráfica da For-Mação Tacuarembó, Bacia Norte – UY. [Masters Thesis]. Brazil; 2017. Available from: http://hdl.handle.net/10183/153394

University of Ottawa

5. Lowe, David. Sedimentology, Stratigraphic Evolution and Provenance of the Cambrian – Lower Ordovician Potsdam Group in the Ottawa Embayment and Quebec Basin .

Degree: 2016, University of Ottawa

URL: http://hdl.handle.net/10393/35303

► The Cambrian – Lower Ordovician Potsdam Group is a mostly siliciclastic unit that provides important insight into the paleoenvironmental, geologic and tectonic history of Early… (more)

▼ The Cambrian – Lower Ordovician Potsdam Group is a mostly siliciclastic unit that provides important insight into the paleoenvironmental, geologic and tectonic history of Early Paleozoic Laurentia. Nevertheless, in spite of 178 years of study the Potsdam in the Ottawa Embayment and Quebec Basin remains poorly understood. Also poorly understood is how the Potsdam relates with coeval strata regionally. In this work six siliciclastic paleoenvironments are recognized: (a) braided fluvial, (b) ephemeral fluvial, (c) aeolian, (d) coastal sabkha, (e) tide-dominated marine and (f) open-coast tidal flat. Fluvial strata were examined in particular detail and interpreted to consist of two end-member kinds. Braided fluvial deposits are dominated by low-relief bars formed in wide, shallow channels; however where basement structures limited the lateral growth of channels, flows were deeper and bar deposits thicker and higher angle. In contrast, ephemeral fluvial strata are dominated by sheetflood splay sedimentation with rare preservation of scour-filling supercritical bedform strata – all later subjected to aeolian reworking. In the upper Potsdam, alternating ephemeral and braided fluvial strata provide a record of climate change, which, respectively, correlate with documented global cool (arid) and warm (humid) periods during the Late Cambrian and Early Ordovician. Three allounits are recognized in Potsdam strata, recording regional episodes of sedimentation and facilitating correlation with coeval strata throughout eastern North America. These correlations, aided with provenance data from detrital zircons, show that changes in the areal distribution of sediment supply, accommodation and deposition/erosion were principally controlled by episodic reactivation of the Neoproterozoic Ottawa graben, which then periodically modified the stratigraphic expression of the ongoing Sauk transgression. Specifically, episodes of tectonic reactivation occurred during late Early to Middle Cambrian (allounit 1), late Middle to early Late Cambrian (allounits 2 – 3 unconformity), and Earliest Ordovician (allounits 3 – 4 unconformity). The earliest episode is correlated to regional extension of southern Laurentia, whereas the latter two are linked to peri-Laurentian accretion events that triggered reactivation of the Ottawa graben via the Missisquoi oceanic fracture zone.

Subjects/Keywords: Potsdam Group; Ottawa Embayment; fluvial; eolian; shallow marine; sandstone; tectonics; Ottawa graben; Ausable; Keeseville; Nepean; Early Paleozoic

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APA (6^th Edition):

Lowe, D. (2016). Sedimentology, Stratigraphic Evolution and Provenance of the Cambrian – Lower Ordovician Potsdam Group in the Ottawa Embayment and Quebec Basin . (Thesis). University of Ottawa. Retrieved from http://hdl.handle.net/10393/35303

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):

Lowe, David. “Sedimentology, Stratigraphic Evolution and Provenance of the Cambrian – Lower Ordovician Potsdam Group in the Ottawa Embayment and Quebec Basin .” 2016. Thesis, University of Ottawa. Accessed April 12, 2021. http://hdl.handle.net/10393/35303.

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

MLA Handbook (7^th Edition):

Lowe, David. “Sedimentology, Stratigraphic Evolution and Provenance of the Cambrian – Lower Ordovician Potsdam Group in the Ottawa Embayment and Quebec Basin .” 2016. Web. 12 Apr 2021.

Vancouver:

Lowe D. Sedimentology, Stratigraphic Evolution and Provenance of the Cambrian – Lower Ordovician Potsdam Group in the Ottawa Embayment and Quebec Basin . [Internet] [Thesis]. University of Ottawa; 2016. [cited 2021 Apr 12]. Available from: http://hdl.handle.net/10393/35303.

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

Council of Science Editors:

Lowe D. Sedimentology, Stratigraphic Evolution and Provenance of the Cambrian – Lower Ordovician Potsdam Group in the Ottawa Embayment and Quebec Basin . [Thesis]. University of Ottawa; 2016. Available from: http://hdl.handle.net/10393/35303

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

6. Oliver, Noah I. Geomorphic Consequences of Hydroelectricity and Transportation Development near Celilo Falls, Lower Mid-Columbia River, Washington.

Degree: MS, Resource Management, 2018, Central Washington University

URL: https://digitalcommons.cwu.edu/etd/1015

► Along the Columbia River, hundreds of miles of transportation infrastructure and over sixty hydroelectric dams have been constructed. This altered a rich cultural landscape with… (more)

▼ Along the Columbia River, hundreds of miles of transportation infrastructure and over sixty hydroelectric dams have been constructed. This altered a rich cultural landscape with evidence of 10,000 years of continuous occupation. Researchers have attempted to understand the impacts of anthropogenic factors on the Columbia River, focusing on the riverine environment. However, the effect of transportation and hydroelectricity developments to eolian landforms on the floodplains and adjoining slopes have not been studied. Focusing on 2,800 acres near Celilo Falls, this study 1) establishes a baseline condition of eolian landforms from 1805 to 1900; 2) conducts an air photo increment analysis from 1930 to 2015; and 3) compares the role of hydroelectricity and transportation with that of agriculture, built environment, temperature, and precipitation in the observed landform responses. Baseline data suggests from 1805 to 1900 large pointbars were sediment sources for barchan dunes, lee dunes, linear dunes, and sandsheets. Airphoto increment analysis indicates from 1930 to 1956, an overall increase in total eolian landform area occurred and reversed after the construction of The Dalles Dam in 1957. The dam eliminated the primary sediment source for dunes, suggesting hydroelectricity was the primary factor in overall eolian landform decline. Transportation development, although an influential factor in the observed distribution of eolian landform area, was not the primary factor. Other factors showed important information related to eolian processes. The built environment was linked to growth of linear dunes with a ρ of 0.8424, which suggests easterly winds are important to their formation. Precipitation was linked to eolian deposition as lee dunes with a ρ of 0.8061, suggesting it activated sediments for eolian transport. An alternating trend between a fluvial- and eolian-dominant environment may exist between anchor dunes, sandsheets, and lee dunes. Further research is suggested to quantify the role of hydroelectricity and transportation in shaping eolian landforms and transportation. Advisors/Committee Members: Karl D. Lillquist, Lisa Ely, Patrick M. Lubinski.

Subjects/Keywords: anthropogenic factors; semi-arid; aerial photography; eolian landforms; eolian and fluvial interaction; Columbia River Gorge; Archaeological Anthropology; Environmental Indicators and Impact Assessment; Environmental Monitoring; Geographic Information Sciences; Geology; Geomorphology; Human Geography; Natural Resources and Conservation; Natural Resources Management and Policy; Nature and Society Relations; Physical and Environmental Geography; Spatial Science; Water Resource Management

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APA (6^th Edition):

Oliver, N. I. (2018). Geomorphic Consequences of Hydroelectricity and Transportation Development near Celilo Falls, Lower Mid-Columbia River, Washington. (Masters Thesis). Central Washington University. Retrieved from https://digitalcommons.cwu.edu/etd/1015

Chicago Manual of Style (16^th Edition):

Oliver, Noah I. “Geomorphic Consequences of Hydroelectricity and Transportation Development near Celilo Falls, Lower Mid-Columbia River, Washington.” 2018. Masters Thesis, Central Washington University. Accessed April 12, 2021. https://digitalcommons.cwu.edu/etd/1015.

MLA Handbook (7^th Edition):

Oliver, Noah I. “Geomorphic Consequences of Hydroelectricity and Transportation Development near Celilo Falls, Lower Mid-Columbia River, Washington.” 2018. Web. 12 Apr 2021.

Vancouver:

Oliver NI. Geomorphic Consequences of Hydroelectricity and Transportation Development near Celilo Falls, Lower Mid-Columbia River, Washington. [Internet] [Masters thesis]. Central Washington University; 2018. [cited 2021 Apr 12]. Available from: https://digitalcommons.cwu.edu/etd/1015.

Council of Science Editors:

Oliver NI. Geomorphic Consequences of Hydroelectricity and Transportation Development near Celilo Falls, Lower Mid-Columbia River, Washington. [Masters Thesis]. Central Washington University; 2018. Available from: https://digitalcommons.cwu.edu/etd/1015

7. Wiederkehr, Fabiane. Análise tectono-estratigráfica das formações itaparica e água grande (Bacia do Recôncavo, Bahia).

Degree: 2010, Brazil

URL: http://hdl.handle.net/10183/28182

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Com base em afloramentos da borda oeste da Bacia do Recôncavo foi efetuada uma análise estratigráfica do intervalo entre as formações Itaparica e Água Grande.… (more)

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Com base em afloramentos da borda oeste da Bacia do Recôncavo foi efetuada uma análise estratigráfica do intervalo entre as formações Itaparica e Água Grande. Os resultados obtidos foram correlacionados com poços na confecção de seções geológicas no sentido dip e de mapas de espessuras para o intervalo total, arenito e pelito. Os dados de campo mostram os pelitos lacustres da Formação Itaparica sendo sucedidos por um sistema deltaico, que dá lugar a arenitos fluviais e eólicos da Formação Água Grande. Portanto, o perfil composto é caracterizado por uma sucessão progradacional, associada a uma progressiva diminuição da razão da taxa de subida do nível freático versus a taxa de influxo sedimentar. A seção de correlação com poços revela um espessamento do intervalo em direção ao depocentro da bacia. Os mapas gerados apresentam, também, boa relação com os compartimentos estruturais da bacia, além de corroborar com a progradação de um sistema siliciclástico de norte sobre um sistema lacustre a sul. Estes resultados revelam que as unidades estudadas foram depositadas sob controle da geometria do meio-gráben do Recôncavo, nos seus estágios iniciais de formação.

A stratigraphical analysis was performed on the Itaparica and Água Grande formations interval, based on outcrops of the western margin of Recôncavo Basin. The obtained results were correlated with boreholes for dip geologic sections and for isopach and isolith maps generation. The field data shows the Itaparica Formation lacustrine mudstones being succeeded by a deltaic system, which make way for the Água Grande Formation fluvio-eolian sandstones. Then, the composite profile is characterized by a progradational pattern and a drying upwards cycle. The geologic section with field and borehole data reveals the thickening of the interval towards the basin depocenter. Also the generated maps present good correlation with the basin‟s compartments, besides corroborating the progradation of a siliciclastic system coming from north to a lacustrine system at south. So, these results demonstrate that the studied units were deposited under the control of the Recôncavo‟s half-graben geometry, in its initial stages of evolution.

Advisors/Committee Members: Scherer, Claiton Marlon dos Santos.

Subjects/Keywords: Estratigrafia; Formação itaparica; Formação água grande; Recôncavo, Bacia sedimentar do (BA); Lacustrine-fluvial-eolian deposits; Rift initiation; Lower cretaceous

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

APA (6^th Edition):

Wiederkehr, F. (2010). Análise tectono-estratigráfica das formações itaparica e água grande (Bacia do Recôncavo, Bahia). (Masters Thesis). Brazil. Retrieved from http://hdl.handle.net/10183/28182

Chicago Manual of Style (16^th Edition):

Wiederkehr, Fabiane. “Análise tectono-estratigráfica das formações itaparica e água grande (Bacia do Recôncavo, Bahia).” 2010. Masters Thesis, Brazil. Accessed April 12, 2021. http://hdl.handle.net/10183/28182.

MLA Handbook (7^th Edition):

Wiederkehr, Fabiane. “Análise tectono-estratigráfica das formações itaparica e água grande (Bacia do Recôncavo, Bahia).” 2010. Web. 12 Apr 2021.

Vancouver:

Wiederkehr F. Análise tectono-estratigráfica das formações itaparica e água grande (Bacia do Recôncavo, Bahia). [Internet] [Masters thesis]. Brazil; 2010. [cited 2021 Apr 12]. Available from: http://hdl.handle.net/10183/28182.

Council of Science Editors:

Wiederkehr F. Análise tectono-estratigráfica das formações itaparica e água grande (Bacia do Recôncavo, Bahia). [Masters Thesis]. Brazil; 2010. Available from: http://hdl.handle.net/10183/28182

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