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Early Cretaceous Carbonate Platform, North Rim of the Gulf of Mexico, Mississippi and Louisiana

By
D. A. Yurewicz
D. A. Yurewicz
Exxon Exploration Company Houston, Texas, U.S.A.
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T. Β. Marler
T. Β. Marler
Exxon Exploration Company Houston, Texas, U.S.A.
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K. Α. Meyerholtz
K. Α. Meyerholtz
Exxon Exploration Company Houston, Texas, U.S.A.
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F. X. Siroky
F. X. Siroky
Exxon Exploration Company Houston, Texas, U.S.A.
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Published:
January 01, 1993

Abstract

Name: Gulf of Mexico, north rim

Authors: D. A. Yurewicz, T. B. Marler, K. A. Meyerholtz, and F. X. Siroky

Location: From 30° to 33° north latitude and 89° to 94° west longitude, Mississippi and Louisiana

Geologic time interval: Early Cretaceous (Barremian) to early Late Cretaceous (early Cenomanian)

Tectonic-sedimentary setting: Passive continental margin, shallow marine to coastal plain

Basin type: Passive continental margin on the north rim of the Gulf of Mexico

Platform type: Rimmed

Platform geometry: Lower Cretaceous section in Louisiana and Mississippi is approximately 2000 m thick. The platform represents a 1400-km-long segment of the north rim of the ancestral Gulf of Mexico that varied in width from about 75 to 200 km (shoreline to basin margin).

Facies and fossils: Rimmed platform with (1) a broad, restricted, shallow marine platform interior or lagoon; (2) a narrow, well-circulated, shallow marine outer platform; (3) a well-defined platform margin; and (4) a gradually dipping foreslope. Fossils: rudists, corals, stromatoporoids, stromatolites, bivalves, gastropods, echinoderms, foraminifera (miliolids and orbitolinids), and red and green calcareous algae

Systems tracts: Eight third-order sequences exist between the Lower Cretaceous Sligo and lower Upper Cretaceous Washita Formations. Each represents a separate platform complex separated by a basinally restricted lowstand wedge and/or a thin sheet of transgressive shale or siliciclastic sandstone. Most of the carbonate section represents highstand deposition.

Stacking patterns: Eight stacked platform complexes; platform growth was generally aggradational except in the lower Albian Lower Glen Rose sequence, which is more progradational.

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Contents

AAPG Memoir

Cretaceous Carbonate Platforms

J. A. Toni Simo
J. A. Toni Simo
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Robert W. Scott
Robert W. Scott
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Jean-Pierre Masse
Jean-Pierre Masse
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American Association of Petroleum Geologists
Volume
56
ISBN electronic:
9781629810973
Publication date:
January 01, 1993

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