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The AAPG/Datapages Combined Publications Database

AAPG Bulletin

Abstract

Volume: 57 (1973)

Issue: 1. (January)

First Page: 198

Last Page: 203

Title: Grabens on Anticlines in Gulf Coastal Plain, and Thinning of Sedimentary Section in Downthrown Fault Block: GEOLOGIC NOTES

Author(s): W. C. Fallaw (2)

Abstract:

Grabens are present on many anticlines in the Gulf coastal plain of the southern United States. They are the results of stress fields caused by gravitational forces. It apparently is geometrically impossible for some types of grabens to develop unless there is plastic deformation of sediments within them. Postdepositional thinning of sediments in the downthrown fault block, as observed in model studies and in field examples, seems to allow grabens to develop without creating volume problems. Thinning in the downthrown block is in sharp contrast to the thickening in the downthrown block commonly observed in association with Gulf Coast faults.

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