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Authors

Charles Keyes

Document Type

Research

Abstract

For a long time after the vast coal fields which extend around the southern extremity of the Rocky Mountains in southern Colorado and northern New Mexico, came under close surveillance of stratigrapher their deposition was regarded as having taken place during the closing epoch of the Cretacic Period. The great thickness of the associated strata were paralleled with the enormously thick Laramie coal-bearing beds of Wyoming and Montana. On this point a voluminous literature appeared to be in general agreement.

Publication Date

1922

Journal Title

Proceedings of the Iowa Academy of Science

Volume

29

Issue

1

First Page

101

Last Page

103

Copyright

©1922 Iowa Academy of Science, Inc.

Language

en

File Format

application/pdf

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