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Book Chapter

Trenton Limestone – The Karst that Wasn′t there, or was it?

By
Brian D. Keith
Brian D. Keith
Indiana Geological Survey and Department of Geological Sciences Bloomington, Indiana
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Lawrence H. Wickstrom
Lawrence H. Wickstrom
Ohio Geological Survey Columbus, Ohio
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Published:
January 01, 1993

Abstract

The top surface of the Trenton Limestone and equivalent carbonate units has be variously described as a subaerial exposure surface (paleokarst), a submarine erosion surface, and a submarine hardground. Detailed study of the contact between the carbonates and overlying shale in outcrop and core and regional stratigraphic analysis indicate that the surface represents a drowning unconformity on the Galena and Lexington carbonate platforms in Ohio and Indiana. This unconformity also appears within the Sebree Trough in Indiana between the platforms, but it is within the overlying shale section rather than at its base. The unconformity has not been recognized in the Point Pleasant Basin in central and southern Ohio. Paleokarst may locally exist on this surface in southern Ontario.

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Figures & Tables

Contents

SEPM Core Workshop Notes

Paleokarst Related Hydrocarbon Reservoirs

Richard D. Fritz
Richard D. Fritz
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James L. Wilson
James L. Wilson
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Donald A. Yurewicz
Donald A. Yurewicz
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SEPM Society for Sedimentary Geology
Volume
18
ISBN electronic:
9781565762701
Publication date:
January 01, 1993

GeoRef

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