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Authors

Erasmus Haworth

Document Type

Research

Abstract

At various places in the Archaean areas of Missouri the granites and porphyries are cut by dikes of basic rocks which usually trend N. E. and: S. W. but occasionally in other directions. The dike rocks are comparatively constant in composition. When holo-crystalline they are a diabase, or an olivine diabase, and when less perfectly crystallized they generally correspond to diabase porphyrite.

Publication Date

1890

Journal Title

Proceedings of the Iowa Academy of Sciences

Volume

1

Issue

Pt. 2

First Page

33

Last Page

35

Copyright

©1890 Iowa Academy of Science, Inc.

Language

en

File Format

application/pdf

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