Skip to Main Content
Skip Nav Destination
GEOREF RECORD

Reclassification of outcropping Tuscaloosa group in Alabama

Charles William Drennen
Reclassification of outcropping Tuscaloosa group in Alabama
Bulletin of the American Association of Petroleum Geologists (March 1953) 37 (3): 522-538

Abstract

The outcropping basal Upper Cretaceous sediments of Alabama, originally designated Tuscaloosa formation, were later divided into four units, from oldest to youngest, the Cottondale, Eoline, Coker, and Gordo formations, and the name Tuscaloosa was raised to the rank of group. A recent regional study, however, indicates that the Tuscaloosa group contains only two units of formational rank-a lower unit, the Coker formation, which is redefined to include all beds of pre-Gordo Tuscaloosa age, and an upper unit, the Gordo formation. It is suggested that the name Cottondale be abandoned and that the Eoline be reduced in rank to a member of the Coker formation. These outcropping sediments of Tuscaloosa age, which were long considered non-marine and later shown to be in part marine, now appear to be chiefly products of shallow marine deposition. Many irregularities of contacts within the Tuscaloosa group are the result of structural disturbance.


ISSN: 0883-9247
Serial Title: Bulletin of the American Association of Petroleum Geologists
Serial Volume: 37
Serial Issue: 3
Title: Reclassification of outcropping Tuscaloosa group in Alabama
Pages: 522-538
Published: 195303
Text Language: English
Publisher: American Association of Petroleum Geologists, Tulsa, OK, United States
Accession Number: 1959-008245
Categories: Areal geology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus.
N30°00'00" - N35°00'00", W88°30'00" - W85°00'00"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2019, American Geosciences Institute. Reference includes data from Bibliography and Index of North American Geology, U. S. Geological Survey, Reston, VA, United States
Update Code: 1959
Close Modal

or Create an Account

Close Modal
Close Modal