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Chapter 20: Little Stave Creek, Alabama—Paleoecologic Study 1

By
Julia Gardner
Julia Gardner
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Published:
March 01, 1957

On Little Stave Creek, a tributary to Tombigbee River, Alabama, within a distance of less than 3 miles, an early Tertiary section of clays, sands, marls, and limestones totaling 400 feet is exposed. The oldest units are referred to the middle Eocene Tallahatta formation, the youngest to the Mint Spring marl member of the Oligocene Marianna limestone. The faunas are dominantly molluscan, including oyster reefs and, at some levels, a prolific growth of corals.

It is believed that the faunas lived on or in mud or sands under continental-shelf or estuarine waters that were as warm as, or warmer than, those of the northern Gulf of Mexico today. Average depths were 40 fathoms or less.

Most of the assemblages are somewhat mixed and contain shells that were brought in by bottom currents. There is no strong evidence of reworking except at important contacts such as that between the Lisbon formation and the Gosport sand.

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Contents

GSA Memoirs

Treatise on Marine Ecology and Paleoecology

Harry S. Ladd
Harry S. Ladd
Editor
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Geological Society of America
Volume
67V2
ISBN print:
9780813760346
Publication date:
March 01, 1957

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