Skip to Main Content
Book Chapter

Devonian shelf-basin, Michigan Basin, Alpena, Michigan

By
Raymond C. Gutschick
Raymond C. Gutschick
Department of Earth Sciences, University of Notre Dame, Notre Dame, Indiana 46556-1020
Search for other works by this author on:
Published:
January 01, 1987

Abstract

This chapter cites two localities, Paxton Quarry and Partridge Point (Fig. 1), and combines field observations fromboth to illustrate important stratigraphic relations and principles.Focus is on litho- and biostratigraphyof Middle and Late Devonian rocks as they relate to the Michigan Basin (Fig. 2).

Black organic-rich shales deserve our attention due to their energy potential asource rocks and fracture reservoirs for petroleum and natural gas. The Paxton Quarry offers the opportunity to examine an exceptional exposure of black shale (large area in Fig. 3; thick section in Fig. 4) as part of the formational sheet that continues into the Michigan Basin subsurface. These special rocks offer achallenge to observe and test their physical, chemical, and organic composition and structureto decipher origin, paleoenvironments, diagenesis, history, and economic value. A spectacular display of numerous, largecalcareous concretions, in situ and free of shale matrix, is present in the quarry. How werethey formed?

Partridge Point has an exposed limestone sequence that underlies Antrim black shales beneath Squaw Bay. Applying Walther’s Law, one can go up section and down dip from fossiliferous shallow-water oxygenated Middle Devonian carbonate platform rocks at the shelf marginof the Michigan Basin into Upper Devonian transitional deeper water oxygen-deficient pelagic limestones followed by deep-wateranaerobic black shales of a euxinic basin.

You do not currently have access to this article.
Don't already have an account? Register

Figures & Tables

Contents

DNAG, Centennial Field Guides

North-Central Section of the Geological Society of America

Donald L. Biggs
Donald L. Biggs
531 Hayward Avenue Ames, Iowa 50010
Search for other works by this author on:
Geological Society of America
Volume
3
ISBN electronic:
9780813754093
Publication date:
January 01, 1987

GeoRef

References

Related

A comprehensive resource of eBooks for researchers in the Earth Sciences

This Feature Is Available To Subscribers Only

Sign In or Create an Account

This PDF is available to Subscribers Only

View Article Abstract & Purchase Options

For full access to this pdf, sign in to an existing account, or purchase an annual subscription.

Subscribe Now