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The AAPG/Datapages Combined Publications Database

GCAGS Transactions

Abstract


Gulf Coast Association of Geological Societies Transactions
Vol. 35 (1985), Pages 495-503

Environments of Sand Deposition, Southwest Louisiana Continental Shelf

John R. Suter (1), H. L. Berryhill, Jr. (2), Shea Penland (1)

ABSTRACT

A synthesis of approximately 20,000 km of high resolution seismic profiles, coupled with vibracores and industrial platform borings, shows that a variety of large sand bodies occur in the late Pleistocene and Holocene sediments of the southwest Louisiana continental shelf. Patterns of sand deposition have been largely controlled by glacio-eustatic sea level fluctuations, paleogeomorphology, subsidence, and salt tectonism.

Sand deposits of the area fall into two categories: (1) those associated with sea level lowstands, or regressive deposits; and (2) those associated with rising sea levels, or transgressive deposits. Regressive facies include fluvial and deltaic sands, while transgressive sands are largely formed by the reworking of regressive deposits.


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