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Upper Cambrian and Lower Ordovician Rocks in Kansas

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Contents

Abstract

Introduction

Acknowledgments

Purpose and scope of report

Nomenclature

Method of Study

Sampling

Comparison of the dolomites

Comparison of insoluble residues

Terminology

Description and Correlation of Subdivisions

Upper Cambrian rocks

Lamotte sandstone

Lithology in Kansas

Distinguishing characteristics

Distribution and thickness

Bonneterre dolomite

Lithology in Kansas

Stratigraphic relations

Distinguishing characteristics

Distribution and thickness

Potosi and Eminence dolomites

Lithology in Kansas

Stratigraphic relations and distinguishing characteristics

Distribution and thickness

Lower Ordovician rocks

Van Buren-Gasconade sequence

Lithology of the Gunter sandstone member in Kansas

Thickness of the Gunter sandstone member

Lithology of the Van Buren-Gasconade sequence in Kansas

Stratigraphic relations and distinguishing characteristics

Distribution and thickness

Roubidoux dolomite

Lithology in Kansas

Stratigraphic relations and distinguishing characteristics

Distribution and thickness

Jefferson City-Cotter sequence

Lithology in Kansas

Stratigraphic relations and distinguishing characteristics

Distribution and thickness

Geologic Cross Sections

General discussion

Cross section on line A-A'

Cross section on line B-B'

Cross section on line C-C'

Cross section on line D-D'

Cross section on line E-E'

Cross section on line E-G

Cross section on line H-H'

Cross section on line I-I'

Cross section on line I-A

Summary of Geologic History

General considerations

First depositional cycle, Lamotte to Doe Run

Second depositional cycle, Potosi to Eminence

Third depositional cycle, Van Buren to Gasconade

Fourth depositional cycle, Roubidoux to Smithville

Description of Insoluble Residues

References

Plate


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Kansas Geological Survey, Geology
Placed on web Jan. 22, 2010; originally published June 1948.
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