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The AAPG/Datapages Combined Publications Database

AAPG Special Volumes

Abstract


Pub. Id: A117 (1978)

First Page: 87

Last Page: 116

Book Title: SG 7: Framework, Facies, and Oil-Trapping Characteristics of the Upper Continental Margin

Article/Chapter: Recognition of Continental-Slope Seismic Facies, Offshore Texas-Louisiana: 2. The Concepts

Subject Group: Geologic History and Areal Geology

Spec. Pub. Type: Studies in Geology

Pub. Year: 1978

Author(s): J. B. Sangree (2), D. C. Waylett (3), D. E. Frazier (2), G. B. Amery (2), W. J. Fennessy (4)

Abstract:

From analysis of a high-resolution arcer survey of the young sediments in the western elastic region of the Gulf of Mexico continental slope, and study of 29 300-m core holes, six facies types have been defined from their appearance on seismic sections. The sedimentary facies that correspond to these seismic-facies types have been interpreted and some progress has been made in identifying the transportation deposition processes responsible for each facies. The six seismic facies and their sedimentary equivalents are: (1) divergent and parallel layered, a varied, deposited in uniform layers; (2) sheet drape--hemipelagic deposits; (3) onlapping fill--probably both high-energy and low-energy turbidites; (4) sigmoid progradational--varied, mainly low-energy submarine deposits formed by outbuilding from relatively shallow to relatively deep water; (5) oblique progradational--shelf-margin deltas and related marine facies; (6) mounded chaotic--submarine creep-and-slump deposits, mass-transport facies.

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