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The AAPG/Datapages Combined Publications Database

AAPG Bulletin

Abstract


Volume: 64 (1980)

Issue: 5. (May)

First Page: 705

Last Page: 705

Title: Subsidence and Thermal History of Southern Oklahoma Aulacogen--Implication for Petroleum Exploration: ABSTRACT

Author(s): Shimon Feinstein, William E. Harrison, Thomas L. Thompson

Article Type: Meeting abstract

Abstract:

Evolution of the southern Oklahoma sedimentary basin has been constructed from the stratigraphic record in deep wells, using the back-stripping method, and by analysis of the rate of subsidence. For this analysis, rate of subsidence has been considered a significant recorder of the cumulative effect of the factors which control basin subsidence. Similarity of subsidence curves constructed in this study to other models indicates, in general, the application of the concept of thermally-controlled isostatic subsidence for the evolution of the southern Oklahoma basin.

Two distinct mechanisms of subsidence are proposed for the evolution of the basin. First, elastic flexure of the lithosphere controlled the initial 20 m.y. of subsidence. Second, reactivation of aulacogen boundary faults may account for differential subsidence.

An anomaly in the rate of subsidence curve suggests a short phase of sediment compaction and fluid migration near the termination of the subsidence stage. This compaction might be a sensitive indication of change in the state of stress from extension to compression, possibly related to the regional tectonic setting.

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Copyright 1997 American Association of Petroleum Geologists