Michigan Basin  search
BTNorth America
 .Michigan Basin
UFLake Michigan Basin
RTOntario
 Illinois
 Indiana
 Ohio
 Wisconsin
 Michigan Lower Peninsula
 Michigan Upper Peninsula
 Michigan
 Bass Islands Dolomite
SNTerm revised in 1989. Structural basin with its center in the Michigan Lower Peninsula. Located in NE Illinois, N Indiana, Michigan, NW Ohio, E Wisconsin and W Ontario. Indexed with states and province as applicable.