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Radiometric ages of some Eocene volcanic rocks

Chadwick, Robert A (1980) Radiometric ages of some Eocene volcanic rocks. Isochron/West, no.27, pp.11, Apr 1980

AuthorsChadwick, Robert A
Year1980
TitleRadiometric ages of some Eocene volcanic rocks
SourceIsochron/West, no.27, pp.11, Apr 1980
ISSN0099-6882
GeoRef1981-009078
Keywordsabsolute age; Beaverhead County Montana; Cenozoic; dates; Eocene;geochronology; igneous rocks; K/Ar; Madison County Montana; MeagherCounty Montana; Montana; Paleogene; Quaternary; southwest Montana;Tertiary; United States; volcanic rocks

4 samples from this reference

SampleRock nameMajorTraceIsotope
NR-1Rhyolite
CM-2Rhyolite
CC-1Basalt
BM-1Basalt