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Early Cretaceous Carbonate Platforms of Northeastern and East-Central Mexico

J. L. Wilson
J. L. Wilson
New Braunfels, Texas, U.S.A.
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W. C. Ward
W. C. Ward
Department of Geology and Geophysics University of New Orleans New Orleans, Louisiana, U.S.A.
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January 01, 1993


Names: Cupido and Aurora around Coahuila block, Golden Lane (Tuxpan), and Valles–San Luis Potosí platforms

Authors: J. L. Wilson and W. C. Ward

Location: From 96° to 102° west longitude and 20° to 28° north latitude, northeastern and east-central Mexico

Geologic time interval: Two periods of platform development: Neocomian–Aptian and

Albian-Cenomanian, separated by a transgressive shale

Tectonic-sedimentary setting: Rifted and dissected passive margin

Basin type: Marginal cratonic

Paleoclimate: Semitropical, generally humid but with two semi-arid periods in early Aptian and middle Albian

Platform type: Rimmed shelves around major positive basement blocks and isolated platforms developed over positive blocks

Platform geometry: Thickness of a few hundred meters to 2000 m. Rimmed shelves as much as 80 km wide and hundreds of km long. Isolated platforms are 65 by 145 km and 200 by 300 km

Facies and fossils: Multitextured carbonates, minor amounts of terrigenous clastics. Both extensive pelagic biotas and shallow water benthos of foraminifers, algae, corals, and various molluscs, particularly rudists.

Systems tracts: Sabkha evaporites, intertidal carbonate cycles, grainstone shoals, coarse rudist–coral–sponge–hydrozoan–red algae at shelf margin, lithoclastic debris, pelagic rhythmites in basin. Mostly highstand systems tracts leading into starved basins. Only minor lowstand systems tracts.

Stacking patterns: Progradations of simple sigmoid sequences, some rising in the sequence as they prograde (Barremian–Aptian). Some of the Albian-Cenomanian platforms are predominantly aggradational, although progradational sequences are documented on the southeastern margin of the Valles platform and the southern flank of the Coahuila block.

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Figures & Tables


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
ISBN electronic:
Publication date:
January 01, 1993




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