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Article Title

Summary of Discussion

Authors

S. Calvin

Document Type

Research

Abstract

The discussion following the preceding papers on the Oelwein section was participated in by Calvin, Fink, Bain, Shimek, Beyer, Finch and others. The facts developed during the discussion may be summarized as follows: A few years ago geologists were content to look upon the glacial period as a unit, and the drift mantle of Iowa was regarded as the effect of a single invasion and retreat of glacial ice. Some time ago, however, McGee demonstrated that in northeastern Iowa there are two distinct drift sheets separated by a soil horizon and forest bed which represent an interglacial period of considerable length.

Publication Date

1896

Journal Title

Proceedings of the Iowa Academy of Sciences

Volume

4

Issue

1

First Page

66

Last Page

68

Copyright

©1896 Iowa Academy of Science, Inc.

Language

en

File Format

application/pdf

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