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Abstract: Multiple Previous HitStratigraphicNext Hit Indicators of Major Strike-Slip along the Eola Previous HitFaultNext Hit, Subsurface Arbuckle Mountains, Oklahoma

McCASKILL, JR., JERRY GLEN

The Eola Previous HitfaultNext Hit bisects the deep portion of the Eola oil field (T 1 N, R 2 and 3 W., Garvin County, OK). At least 9 wells cut the Previous HitfaultNext Hit and more than 200 wells within a mile of the Previous HitfaultNext Hit define local Previous HitstratigraphicNext Hit relationships on either side. Within the eight miles of control in the Eola field, the Previous HitfaultNext Hit is a linear steeply southwest dipping Previous HitfaultNext Hit that trends N75-80W with 1500 feet of normal separation to the east and 2000 feet of reverse separation to the west. Juxtaposition of markedly different stratigraphy across the Previous HitfaultNext Hit cannot be explained by pure dip-slip deformation, but are consistent with left-lateral displacement. More specifically offset of contour lines across the Previous HitfaultNext Hit on isochore maps of units in the Sycamore, Hunton, and Tulip Creek Formations (based on a 650 well study) all indicate a left-lateral, strike-slip motion of 16 miles.

Data presented here indicates that the Eola Previous HitfaultNext Hit has 16 miles of left-lateral strike-slip and plunges 3 degrees to the west, with less than 0.5 mile of either reverse or normal displacement, all of which makes Previous HitinterpretationNext Hit of the Previous HitfaultNext Hit consistent with a wrench Previous HitfaultNext Hit model. Other Previous HitfaultTop models may be also explain the large strike-slip component of displacement, but any model that fails to account for a large strike-slip component will automatically be inconsistent with the well constrained data from the Eola field.

AAPG Search and Discovery Article #90944©1997 AAPG Mid-Continent Section Meeting, Oklahoma City, Oklahoma