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Document Type

Research

Abstract

This paper treated particularly of the morainic till of the Missouri Valley. To explain the origin of this till, there are two theories acceptable: one that it is sub-glacial, the other, that it was formed at the bottom of a glacial lake, gradually filling with debris brought from a glacier and the shore, by ice-rafts.

Publication Date

1887

Journal Title

Proceedings of the Iowa Academy of Sciences

Volume

1

Issue

Pt. 1

First Page

12

Last Page

14

Copyright

©1887 Iowa Academy of Science, Inc.

Language

en

File Format

application/pdf

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