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AAPG Bulletin

Abstract


Volume: 24 (1940)

Issue: 11. (November)

First Page: 2006

Last Page: 2018

Title: Structural History of Billings Field, Noble County, Oklahoma, Interpreted in Terms of Isostasy

Author(s): Malvin G. Hoffman (2)

Abstract:

This paper is an attempt to apply the theory of isostasy in the interpretation of the geologic events of the Billings dome, Noble County, Oklahoma. This dome is believed to have been thrust upward periodically from Cambrian time to early Pennsylvanian time. Each period of upthrusting appears to have been directly related to the deposition of thick bodies of sediment in southern Oklahoma. The greatest deformation, during which the Billings anticline was folded and faulted, followed the deposition of the Mississippian limestone. This deformation occurred while 20,000 feet of sediments were accumulating in the Ouachita basin and 6,000 feet of sediments were accumulating in the Ardmore-Anadarko basin.

During most of Pennsylvanian and Permian time more than 4,000 feet of sediments were deposited in the region including the Billings dome. Differential downward adjustment of the earth's crust was necessary to compensate for this overload of sediments. The downward adjustment was greater in the synclines adjacent to the dome than on it, which made it possible for the Billings fold to be reflected upward through the beds to the surface.

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