Paleomagnetism and 40Ar/39Ar Ages of Ignimbrites, Mogollon-Datil Volcanic Field, Southwestern New Mexico
Paleomagnetism and 40Ar/39Ar Ages of Ignimbrites, Mogollon-Datil Volcanic Field, Southwestern New Mexico

Author: William C. McIntosh

Publisher:

Published: 1991

Total Pages: 84

ISBN-13:

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This report presents 40Ar/39Ar sanidine ages and paleomagnetic data for 36 ignimbrites and associated lavas in the Eocene-Oligocene Mogollon-Datil volcanic field of southwestern New Mexico. 40Ar/39Ar age spectra from the ignimbrites yield plateau ages which range from 36.2 to 24.3 Ma and show within-sample and within-unit 1 s precision of ±0.5% or better. These ages agree closely with independently established stratigraphic order and indicate that Mogollon-Datil ignimbrite activity was highly episodic, being confined to four brief (

Elements of Pennsylvanian Stratigraphy, Central Appalachian Basin
Elements of Pennsylvanian Stratigraphy, Central Appalachian Basin

Author: Charles L. Rice

Publisher: Geological Society of America

Published: 1994-01-01

Total Pages: 162

ISBN-13: 0813722942

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Papers based on geological mapping completed in the last 30 years and on associated stratigraphic and biostratigraphic studies deal with the contentious subject of correlation of Pennsylvanian units, and serve as an addendum to the work of Harold R. Wanless. Includes b&w photos and diagrams, and a g

Bulletin
Bulletin

Author: New Mexico. Bureau of Mines and Mineral Resources

Publisher:

Published: 1994

Total Pages: 264

ISBN-13:

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Memoir
Memoir

Author: New Mexico. Bureau of Mines and Mineral Resources

Publisher:

Published: 1956

Total Pages: 148

ISBN-13:

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