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Reference 290

Smedes, Harry W; Prostka, Harold J (1972) U. S. Geological Survey Professional Paper, Report: P 0729-C,pp.C1-C33, 1972

AuthorsSmedes, Harry W; Prostka, Harold J
Year1972
SourceU. S. Geological Survey Professional Paper, Report: P 0729-C,pp.C1-C33, 1972
ISSN1044-9612
GeoRef1973-015447
KeywordsCenozoic; distribution; Eocene; igneous rocks; Montana; Paleogene;stratigraphy; Tertiary; United States; USGS; volcanic rocks; Wyoming
NotesGeology of Yellowstone National Park

Abstract

Eocene volcanic rocks, definitions of new groups, formations, andmembers, lithologic and age data

15 samples from this reference

SampleRock nameMajorTraceIsotope
ATuff
CTuff
ETuff
ETuff
FPyroclastic-fall
GPyroclastic-fall
HTuff
HTuff
IAndesite
JAndesite
KTuff
KTuff
LPyroclastic-fall
MPyroclastic-fall
NVitrophere