Author(s) | |
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Abstract |
Rb-Sr isochron data from whole-rock samples of dolerite and metadolerite indicate emplacement of dikes 2,826 ± 58 m.y. ago, during formation of the Bighorn gneiss and granitic complexes. Whole-rock samples of other dolerite dikes and mineral separates mark another intrusive event at 2,200 ± 35 m.y. B.P., well after the regional metamorphism. Two episodes of mafic dike emplacement are consistent with field relations but are not in agreement with recent K-Ar age determinations. |
Format | |
Publication Date |
1976-06-01
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Publication Title |
Geological Society of America Bulletin
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Volume |
87
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First Page |
909
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Last Page |
914
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Subject | |
Community | |
Comments | |
Recommended Citation |
Stueber, Alan M; Heimlich, Richard; Ikramuddin, Mohammed (1976). Rb-Sr Ages Of Precambrian Mafic Dikes, Bighorn Mountains, Wyoming. Geological Society of America Bulletin 87 909-914. Retrieved from https://oaks.kent.edu/geolpubs/11
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An edited version of this paper was published by AGU. Copyright 1974 American Geophysical Union.