Potassium-Argon Ages of Precambrian Mafic Dikes in Wyoming
- 1 January 1969
- journal article
- Published by Geological Society of America in GSA Bulletin
- Vol. 80 (5) , 899-906
- https://doi.org/10.1130/0016-7606(1969)80[899:paopmd]2.0.co;2
Abstract
Potassium-argon dating of whole-rock contact zones from 27 Precambrian mafic dikes in Wyoming suggests several periods of intrusion in the time interval 700 to 2500 m.y. A widespread period at 1900 to 2200 m.y. is suggested by the data.Keywords
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