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Late Ordovician-Early Silurian strata in the central United States and the Hirnantian stage.

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Okla State Agency	Geological Survey, Oklahoma
Okla Agency Code	'760'
Title	Late Ordovician-Early Silurian strata in the central United States and the Hirnantian stage.
Alternative title	Late Ordovician-Early Silurain strata.
Authors	Amsden, Thomas W. Barrick, James E.
Publisher	University of Oklahoma.
Publication Date	1986
Publication type	Technical Reports
Subject	Geology, Stratigraphy--Ordovician. Geology, Stratigraphic--Silurian.
Purpose	This report is composed of two papers (Parts I and II) on the biostratigraphy, lithostratigraphy, and paleoenvironment of the latest Ordovician (Hirnantain) and Early Silurian strata in the southern Midcontinenet region of the United States. These strata include the Keel Formation of Oklahoma, the Cason oolite of Arkansas, and the Edgewood Group of the Mississippi Valley. The sequence is composed mainly of oolitic limestones, skeletal limestones, and dolomites having a maximum thickness of about 40 feet (12 m). Fe-Mn mineralization is developed locally in south-central Oklahoma and north-central Arkansas.
Series	Bulletin (Oklahoma Geological Survey) ; 139
OkDocs Class#	G500.7 B936 no.139
Digital Format	PDF, Adobe Reader required
ODL electronic copy	Downloaded from agency website: http://www.ogs.ou.edu/pubsscanned/BULLETINS/Bulletin139.pdf
Rights and Permissions	This Oklahoma state government publication is provided for educational purposes under U.S. copyright law. Other usage requires permission of copyright holders.
Language	English
Date created	2012-07-16
Date modified	2012-07-16

Title	Bulletin139 ocr 1
Full text	~C.\.OLOGIC-1( ~ ~ IT; "'" "" -.I " ~ ~ ~ ;. ~ . . 19011 OKLAHOMA GEOLOGICAL SURVEY Charles J. Mankin, Director BULLETIN 139 ISSN 0078-4389 LATE ORDOVICIAN-EARLY SILURIAN STRATA IN THE CENTRAL UNITED STATES AND THE HIRNANTIAN STAGE THOMAS W. AMSDEN AND JAMES E. BARRICK The University of Oklahoma Norman 1986
Date created	2012-07-16
Date modified	2012-07-16

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Late Ordovician-Early Silurian strata in the central United States and the Hirnantian stage.

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