Big Hill Dolomite (MIOb;0)

State	Michigan
Name	Big Hill Dolomite
Geologic age	Late Ordovician
Original map label	Ob
Primary rock type	dolostone (dolomite)
Secondary rock type	limestone
Other rock types
Lithologic constituents	Major Sedimentary > Carbonate > Dolostone (Bed) Minor Sedimentary > Carbonate > Limestone (Bed)
Map references	Reed, Robert C., and Daniels, Jennifer (compilers), 1987, Bedrock geology of northern Michigan: Geological Survey Division, Michigan Dept. of Natural Resources, scale= 1:500,000
Unit references	Reed, Robert C., and Daniels, Jennifer (compilers), 1987, Bedrock geology of northern Michigan: Geological Survey Division, Michigan Dept. of Natural Resources, scale= 1:500,000
Geographic coverage	Chippewa - Delta - Luce - Mackinac - Schoolcraft