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The AAPG/Datapages Combined Publications Database

GCAGS Transactions


Gulf Coast Association of Geological Societies Transactions
Vol. 53 (2003), Pages 548-554

Hydrocarbon Production and Surface Expression of the China Segment of the Tepetate Previous HitFaultNext Hit Zone, Louisiana

Byron Miller, Paul V. Heinrich


The China Segment is a portion of the Tepetate Previous HitFaultNext Hit Zone that traverses St. Landry, Acadia, and Jefferson Davis parishes. It is part of the larger Baton Rouge-Tepetate Previous HitFaultNext Hit System that is a major down-to-the-basin growth Previous HitfaultNext Hit zone that traverses the northern portion of south Louisiana. This Previous HitfaultNext Hit system exhibits syndepositional growth in the late Eocene and Oligocene periods with surface Previous HitfaultNext Hit-line scarps and floodplain deformation indicating movement during Pleistocene and Holocene. The Baton Rouge Previous HitFaultNext Hit Zone comprises the eastern and central portion of the Previous HitfaultNext Hit system, the Tepetate Previous HitFaultNext Hit Zone comprises the western portion and presents a more complex, sinuous, and segmented trace in the subsurface.

The China Segment exhibits surface expression consisting of a series of scarps that comprise the China Previous HitfaultNext Hit-line scarp. The Previous HitfaultNext Hit-line scarps exhibit displacement ranging from 1.5 to over 3 meters. These scarps offset the surface of the Prairie Alloformation and associated abandoned river channels indicating reactivation and movement during the Pleistocene. Deformation of flood plains, where crossed by the trace of Tepetate Previous HitFaultNext Hit Zone, demonstrates Holocene Previous HitfaultNext Hit movement.

Eight named hydrocarbon producing fields associated with the China Segment have cumulative production of 106 MMBO + 410 BCFG. Producing structures are predominately Previous HitfaultNext Hit generated rollover anticlines. The China Segment is also recognized as a barrier to freshwater flow in regional freshwater aquifers. The affect of Previous HitfaultTop reactivation on hydrocarbon entrapment and freshwater resources is uncertain.

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