A structural analysis of the Washita Valley Fault in the southeast Anadarko Basin
| العنوان: | A structural analysis of the Washita Valley Fault in the southeast Anadarko Basin |
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| المؤلفون: | Bryan Tapp, Molly Turko |
| المصدر: | Interpretation. 9:T183-T200 |
| بيانات النشر: | Society of Exploration Geophysicists, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | geography, geography.geographical_feature_category, 020209 energy, Geology, 02 engineering and technology, Fault (geology), Structural basin, 010502 geochemistry & geophysics, Strike-slip tectonics, 01 natural sciences, Stress field, Paleontology, Geophysics, Basement (geology), 0202 electrical engineering, electronic engineering, information engineering, 0105 earth and related environmental sciences |
| الوصف: | We propose that the Washita Valley Fault in the southeast Anadarko Basin originated when Precambrian-Cambrian preexisting rift-related faults became reactivated as a rotational stress field reached a favorable orientation for strike-slip displacement. During the Early to Middle Pennsylvanian, contractional deformation dominated as a Precambrian-Cambrian failed rift underwent structural inversion along a northeast-directed stress field. Structures that developed in the basin consisted primarily of thin-skinned fold-thrust structures resulting from slip along two main detachment levels. By the Late Pennsylvanian, stress rotated toward the east–northeast causing left-lateral strike-slip displacement along east–west-oriented structures. During this time, the Washita Valley Fault originated from an east–west-oriented preexisting basement fault. The Washita Valley Fault formed as a near-vertical segment cutting through the earlier fold-thrust structures. Movement was accompanied by oblique normal slip allowing grabens to develop that were subsequently filled with Virgilian-age sediment. A left step of the Washita Valley Fault allowed for a significant graben to develop near the east end of the study area resulting in a thick Virgilian-age growth section validating the timing of the fault movement. The Wichita Mountain Fault also underwent a component of left-lateral strike-slip displacement during the Late Pennsylvanian highlighting its continuous movement and deformation history in a rotating stress field. Although much of the published literature on the Washita Valley Fault is limited to the Arbuckle Uplift, our study documents its subsurface architecture, timing, and structural history in the southeast Anadarko Basin using a modern 3D seismic data set in relation to evolving Pennsylvanian tectonics. |
| تدمد: | 2324-8866 2324-8858 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::cfec5cefdac5f530a4421a4bd290e770 https://doi.org/10.1190/int-2020-0079.1 |
| رقم الأكسشن: | edsair.doi...........cfec5cefdac5f530a4421a4bd290e770 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 23248866 23248858 |
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