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The AAPG/Datapages Combined Publications Database

Oklahoma City Geological Society

Abstract


The Shale Shaker
Vol. 48 (1997), No. 2. (September/October), Pages 49-49

Abstracts of Oral and Poster Presentations at the 1997 AAPG Mid-Continent Section Meeting, September 14-16, 1997, Hosted by the Oklahoma City Geological Society

Fold-Thrust Deformation Along Portions of the Arbuckle Thrust System and Frontal Wichitas, Southern Oklahoma [Abstract]

C. P. Saxon1

The Wichita Uplift and Arbuckle Anticline are basement involved foreland structures which formed during late Mississippian to late Pennsylvanian time. These uplifts and their associated basins exhibit the typical style characteristic of fold-thrust deformation. Earliest stages of deformation involve folding of the basement to create an asymmetric anticline and a forelimb syncline. Volumetric crowding problems created by upward tightening from the forelimb syncline generated thrusts within the pre-Pennsylvanian sedimentary section. These thrusts were directed up the steep and shallow flanks of the foreland syncline. Thrusting along the shallow limb created detached basinal anticlines characterized by fault-propagation folds within the pre-Pennsylvanian section. These lower fault-propagation folds are separated from overlying growth structures by detachments within Springer shales which form cross-crestal folds. This style is evident in numerous producing fields in the Anadarko and Ardmore Basins, including Carter-Knox, Velma-Cruce, Elk City, and Cement. Deep levels of erosion, poor exposure, the subsurface nature of the uplifts, and poor seismic imaging complicate resolution of structural geometry of the mountain front. However, regional cross-sections which integrate seismic and well control can establish minimal values of shortening and clarify fault relationships. Examples are presented from the Arbuckle Anticline and portions of the Wichita Uplift and the Anadarko Basin.

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ACKNOWLEDGMENTS AND ASSOCIATED FOOTNOTES

1 Institute For Reservoir Characterization, Norman, OK

Copyright © 2003 by OCGS (Oklahoma City Geological Society)