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Document Type

Research

Abstract

At the state quarries, or North Bend quarries, in sections 5 and 8 of Penn township, Johnson County, Iowa, there is a body of limestone of Devonian age, possessing marked characteristics which set it off sharply from the rest of the Devonian in the upper Mississippi Valley. The formation has a thickness of about forty feet. At present there is some uncertainty as to its exact taxonomic relations.

Publication Date

1896

Journal Title

Proceedings of the Iowa Academy of Sciences

Volume

4

Issue

1

First Page

16

Last Page

21

Copyright

©1896 Iowa Academy of Science, Inc.

Language

en

File Format

application/pdf

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