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Document Type

Research

Abstract

The Independence shale, the earliest named formation of the Iowa Devonian, was described in 1878 by Samuel Calvin (1). He then, and later (2), stated that it was beneath the Cedar Valley limestone. Several geologists have since suggested that it was the same as the Kenwood shale (5) or a later formation (3, 7, 10) let down into the Cedar Valley. In 1935 Stainbrook (8) corroborated the conclusion of Calvin and in 1945 (9) gave all known evidences in favor of the presence of the shale beneath the Cedar Valley limestone and above the Davenport. The present paper summarizes additional evidences which have since come to light as to the stratigraphic place of the shale.

Publication Date

1950

Journal Title

Proceedings of the Iowa Academy of Science

Volume

57

Issue

1

First Page

293

Last Page

298

Copyright

© Copyright 1950 by the Iowa Academy of Science, Inc.

Language

EN

File Format

application/pdf

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