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GRAND CANYON NATURE NOTES

Volume 9, Number 8
November, 1934

National Park Service
Grand Canyon National Park
Grand Canyon Natural
History Association

This publication is issued monthly for the purpose of recording observations and of making known the results of research and scientific investigation in the Grand Canyon region in the fields of natural history, history and related subjects. It is published by the Natural History Association for the Grand Canyon National Park. Membership in this Association is $1.00 per year and includes a subscription to Nature Notes. Additional copies of Nature Notes may be obtained at 10¢ each by addressing The Grand Canyon Natural History Association, Grand Canyon, Arizona.


M. R. Tillotson,
Superintendent
Edwin D. McKee,
Park Naturalist

Table of Contents

SOME OBSERVATIONS OF THE UNKAR GROUP OF THE GRAND CANYON ALGONKIAN
     C. E. Van Gundy, Berkeley, California

Introduction
Geographical Distribution
Outline of Field Work
Stratigraphy
Igneous Rocks
Proposed "Nankoweap Group"
Unkar-Chuar Contact
Conditions of Deposition
Structure

Map and titles
     By Walter Wagner

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