Bois Blanc Formation (MIDbb;0)

State	Michigan
Name	Bois Blanc Formation
Geologic age	Early Devonian
Original map label	Dbb
Primary rock type	limestone
Secondary rock type	dolostone (dolomite)
Other rock types
Lithologic constituents	Major Sedimentary > Carbonate > Limestone Minor Sedimentary > Carbonate > Dolostone
Map references	Milstein, Randall L. (compiler), 1987, Bedrock geology of southern Michigan: Geological Survey Division, Michigan Dept. of Natural Resources, scale= 1:500,000
Unit references	Milstein, Randall L. (compiler), 1987, Bedrock geology of southern Michigan: Geological Survey Division, Michigan Dept. of Natural Resources, scale= 1:500,000
Geographic coverage	Charlevoix - Cheboygan - Emmet - Mackinac