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K-Ar ages of selected Tertiary igneous rocks in southwestern Montana

Marvin, R F; Wier, K L; Mehnert, H H; Merritt, V (1974) K-Ar ages of selected Tertiary igneous rocks in southwestern Montana. Isochron/West, no.10, pp.17-20, Aug 1974

AuthorsMarvin, R F; Wier, K L; Mehnert, H H; Merritt, V
Year1974
TitleK-Ar ages of selected Tertiary igneous rocks in southwestern Montana
SourceIsochron/West, no.10, pp.17-20, Aug 1974
ISSN0099-6882
GeoRef1976-019984
Keywordsabsolute age; basalts; Black Butte; Cenozoic; dates; geochronology;igneous rocks; K/Ar; Montana; northwest; rhyolites; techniques;Tertiary; United States; Virginia City; volcanic rocks

10 samples from this reference

SampleRock nameMajorTraceIsotope
KW-66-66Andesite
KW-19-66Andesite
KW-911-67Basalt
KW-912-67Basalt
KW-913-67Basalt
KW-914-67Rhyolite
KW-2-72Basalt
KW-3-72Basalt
KW-916-11-67Basalt
KW-916-11-67Basalt