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Authors

Fred H. Dorheim

Document Type

Research

Abstract

Recent grading of a road in Jackson county, Iowa, led to the uncovering and subsequent discovery of an outlier of Devonian limestone. This outlier was first noted while the author was searching for a suitable quarry site in Jackson County, southeast of Maquoketa. The area is located south of center section 33 Maquoketa Township, just about one-fourth mile north of the Clinton-Jackson county line. With the exception of an area along the Mississippi River and a smaller area around the town of Preston, where Ordovician rocks are exposed, Jackson County is underlain by Silurian dolomites of the Niagara Series. Other than the Devonian outlier found by Norton near Canton, the nearest known Devonian is approximately thirty-five to forty miles south and south-west.

Publication Date

1953

Journal Title

Proceedings of the Iowa Academy of Science

Volume

60

Issue

1

First Page

362

Last Page

365

Copyright

© Copyright 1953 by the Iowa Academy of Science, Inc.

Language

EN

File Format

application/pdf

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