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Bridger Formation

BRIDGER FORMATION--Greenish-gray, olive-drab, and white tuffaceous sandstone and claystone; lenticular marlstone and conglomerate.
State Wyoming
Name Bridger Formation
Geologic age Phanerozoic | Cenozoic | Tertiary | Eocene
Primary rock type fine-grained mixed clastic
Secondary rock type mixed clastic/volcanic
Other rock types mixed clastic/carbonate
Lithologic constituents
Major
Sedimentary > Clastic > Sandstone
Sedimentary > Clastic > Mudstone > Claystone
Minor
Sedimentary > Carbonate > Marlstone
Sedimentary > Clastic > Conglomerate
Incidental
Igneous > Volcanic (Pyroclastic, tuff)
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 Fremont - Lincoln - Sublette - Sweetwater - Uinta