Skip to Main Content
Book Chapter

Deposition and Diagenesis of a Marine-Swamp Margin; The Providence Limestone and Adjacent Coals, Western Kentucky

By
Carol B. Dewet
Carol B. Dewet
1
Department of Geosciences, Franklin and Marshall College, Lancaster, PA 17604
Search for other works by this author on:
Stephen O. Moshier
Stephen O. Moshier
1
Department of Geosciences, Franklin and Marshall College, Lancaster, PA 17604
Search for other works by this author on:
James C. Hower
James C. Hower
1
Department of Geosciences, Franklin and Marshall College, Lancaster, PA 17604
Search for other works by this author on:
Susan M. Rimmer
Susan M. Rimmer
2
Department of Geological Sciences, University of Kentucky, Lexington, KY 40506
Search for other works by this author on:
Published:
January 01, 1991

Abstract

Marine limestones, terrigenous siltstones, shales, and coals exhibit complex stratigraphic relationships in the western Kentucky coal fields at the southern margin of the Illinois Basin. The Providence Limestone member of the Sturgis Formation (Pennsylvania) is a mixed siliciclastic-carbonate unit bounded by the No. 11 (Herrin) and No. 13 (Baker) coal seams. The coals contain fractured and brecciated horizons, cemented by sparry calcite and dolomite. Shallow-marine limestones and clastic rocks are interbedded with coals; lateral thickness and lithologic changes are abrupt. Up to 6.6 ft (2 m) thick beds of limestone are brecciated, with abundant intraclasts and disrupted fabrics. Slickensided claystones containing plant debris (underclays) directly underlie the coal seam deposits. The coals are overlain by thin shales with limestone nodules, followed by normal marine limestones. The limestones are generally disrupted, with pedogenic features overprinting the original marine fabric. Hard claystones overlie the disrupted limestones.

The coals and Providence lithologies have complex diagenetic histories. Early lithification of brecciated coal fragments prevented complete organic decay, and the brecciated coals have well-preserved macerals. Petrographic examination of the Providence shows an original marine faunal assemblage in wackestones, packstones, and grainstones. Multiple episodes of carbonate cementation, silicification, and pedogenic alteration have altered the primary textures, creating a diverse suite of microfabrics.

You do not currently have access to this article.

Figures & Tables

Contents

SEPM Core Workshop Notes

Mixed Carbonate-Siliciclastic Sequences

Anthony J. Lomando
Anthony J. Lomando
Search for other works by this author on:
Paul M. Harris
Paul M. Harris
Search for other works by this author on:
SEPM Society for Sedimentary Geology
Volume
15
ISBN electronic:
9781565762695
Publication date:
January 01, 1991

GeoRef

References

Related

Citing Books via

Close Modal
This Feature Is Available To Subscribers Only

Sign In or Create an Account

Close Modal
Close Modal