التفاصيل البيبلوغرافية
| العنوان: |
Three-dimensional eolian bounding surface architecture of the Entrada sandstone, Utah: expanding our understanding of reservoir heterogeneity in wet eolian systems |
| المؤلفون: |
Gross, Evan C. |
| المساهمون: |
Jobe, Zane R., Carr, Mary, Murray, Laura, Trudgill, Bruce, 1964- |
| بيانات النشر: |
Colorado School of Mines. Arthur Lakes Library |
| سنة النشر: |
2020 |
| المجموعة: |
Digital Collections of Colorado (Colorado State University) |
| مصطلحات موضوعية: |
digital outcrop model, Eolian, lateral variability, Entrada sandstone, bounding surfaces, erg evolution |
| الوصف: |
Includes bibliographical references. ; 2020 Spring. ; Eolian bounding surfaces represent significant changes in dune-field dynamics caused by allogenic and autogenic processes associated with erg evolution. Eolian deposits form noteworthy petroleum reservoirs (e.g., Norphlet Formation, Rotliegend Group, and the Tensleep Sandstone), but bounding surface architecture imparts significant reservoir heterogeneity. In order to understand dune morphodynamics, reconstruct ancient erg evolution, and evaluate the impact of flow-inhibiting bounding surfaces on hydrocarbon reservoir performance, the stratigraphic architecture of eolian systems must continue to be studied at multiple scales.This study pairs traditional field and laboratory methods (e.g., measured stratigraphic sections, handheld gamma-ray spectrometry, petrography) with advanced technologies (e.g, RTK GPS data, drone-derived digital outcrop models) to precisely resolve the kilometer-scale three-dimensional stratigraphic architecture of wet eolian Middle Jurassic Entrada Sandstone outcrops located ~60 km south of Moab, Utah at Rone Bailey Mesa (RBM). Six facies are identified, primarily based on sedimentary fabrics, and grouped into four facies associations named dune, sabkha, sand sheet, and ash fall. Statistical analyses and automated mineralogy data suggest that gamma-ray logs could potentially improve understandings of wet eolian bounding surface architecture and dune and sabkha facies association distributions in the subsurface. Seven modeled super bounding surfaces suggest that such surfaces are planar to somewhat undulatory, with no perceived trends. Five modeled interdune migration surfaces are also undulatory but exhibit a ~0.09° angle of climb toward the south-southwest (roughly parallel to the paleowind direction). Three modeled superimposition surfaces are concave up and some are quite sinuous in plan-view. Laterally-restricted sabkha facies association deposits observed in the upper-most portion of the Entrada Sandstone suggest that they were ... |
| نوع الوثيقة: |
text |
| وصف الملف: |
born digital; masters theses; application/pdf |
| اللغة: |
English |
| العلاقة: |
2020 - Mines Theses & Dissertations; Gross_mines_0052N_11974.pdf; T 8950; https://hdl.handle.net/11124/174141Test |
| الإتاحة: |
https://hdl.handle.net/11124/174141Test |
| حقوق: |
Copyright of the original work is retained by the author. |
| رقم الانضمام: |
edsbas.93BDEDA5 |
| قاعدة البيانات: |
BASE |
