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Warsaw Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Carboniferous
 ....Mississippian
 .....Upper Mississippian
 ......Meramecian
 .......Warsaw Formation
RTIowa
 Kentucky
 Missouri
 Illinois
 Indiana
 Mississippi
 Alabama
 Tennessee
SNIn Osage Group. Lower division consists of massive fine-grained earthy geode-bearing limestone below, thin bed of locally brownish dolomite cherty limestone in middle and bluish-gray slightly calcareous geode-bearing shale above. N Alabama, Illinois, Indi