--> Abstract: Interpretation of the Reagan Fault, Garvin, Johnston, Murray, and Stephens Counties, Oklahoma, by J. G. McCaskill; #90991 (1993).
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McCASKILL, JERRY G., University of Oklahoma, Norman, OK

ABSTRACT: Interpretation of the Reagan Previous HitFaultNext Hit, Garvin, Johnston, Murray, and Stephens Counties, Oklahoma

The Reagan Previous HitfaultNext Hit, which lies between the Mill Creek syncline and the Tishomingo anticline, is one of the major faults in the Arbuckle Mountains. The Previous Hitfault'sNext Hit surface expression extends for more than 24 mi, and it can be traced in the subsurface at least an additional 26 mi west. The relative upthrown side of the Previous HitfaultNext Hit changes at least four times along its length and it is manifest in different segments as both an apparent reverse Previous HitfaultNext Hit and an apparent normal Previous HitfaultNext Hit.

Subsurface cross sections show abrupt facies changes within formations across the Reagan Previous HitfaultNext Hit and isochore maps of individual units indicate a large-scale component of left-lateral movement along the Previous HitfaultNext Hit. The geometry of the Previous HitfaultNext Hit, as well as its displacement, also is consistent with a wrench-Previous HitfaultNext Hit interpretation of the Reagan Previous HitfaultNext Hit. Synorogenic conglomerates indicate that in at least one locality the Reagan Previous HitfaultNext Hit had ceased movement, whereas the Washita Valley Previous HitfaultTop was still active.

AAPG Search and Discovery Article #90991©1993 AAPG Mid-Continent Section Meeting, Amarillo, Texas, October 10-12, 1993.