Bighorn Dolomite (WYOb;0)

BIGHORN DOLOMITE--Light-gray massive siliceous dolomite in northern Yellowstone area. Gray massive cliff-forming siliceous dolomite and locally dolomitic limestone in Thrust belt and northern Wyoming.

State	Wyoming
Name	Bighorn Dolomite
Geologic age	Phanerozoic \| Paleozoic \| Ordovician-Middle Ordovician-Late
Original map label	Ob
Primary rock type	dolostone (dolomite)
Secondary rock type
Other rock types
Lithologic constituents	Major Sedimentary > Carbonate > Dolostone
Map references	Love, J.D. and Christiansen, Ann Coe, 1985, Geologic Map of Wyoming: U.S. Geological Survey. [http://pubs.er.usgs.gov/publication/ofr83802]
Unit references	Love, J.D. and Christiansen, Ann Coe, 1985, Geologic Map of Wyoming: U.S. Geological Survey. [http://pubs.er.usgs.gov/publication/ofr83802]
Geographic coverage	Big Horn - Johnson - Park - Sheridan