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Prairie Evaporite  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Devonian
 ....Middle Devonian
 .....Prairie Evaporite
RTSaskatchewan
 Montana
 North Dakota
 Manitoba
 Elk Point Group
SNSalt and anhydrite beds that form upper unit of Elk Point Group. Subsurface. Also search Prairie Formation NOT Louisiana. For Pleistocene formation in Louisiana, search Prairie Formation AND Louisiana.