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Colter Formation

COLTER FORMATION--Dull-green and gray tuff, volcanic conglomerate, and sandstone.
State Wyoming
Name Colter Formation
Geologic age Phanerozoic | Cenozoic | Tertiary | Miocene
Primary rock type mixed clastic/volcanic
Secondary rock type tuff
Other rock types sandstone
Lithologic constituents
Major
Igneous > Volcanic (Pyroclastic, tuff)
Sedimentary > Clastic > Conglomeratevolcanic conglomerate
Sedimentary > Clastic > Sandstone
Map references
Love, J.D. and Christiansen, Ann Coe, 1985, Geologic Map of Wyoming: U.S. Geological Survey.
Unit references
Love, J.D. and Christiansen, Ann Coe, 1985, Geologic Map of Wyoming: U.S. Geological Survey.
Counties Teton