Description: The development of karst, sink holes, caves, and solution breccias is common in the Madison Group.A map of three main chemical facies distributions for water (bicarbonate, sulfate, and chloride facies) by Busby (1982, in Downey, 1986) represents this property in the GIS data base.
Service Item Id: fa2dde538d4447e8923f73572bce1486
Copyright Text: Downey, J. S., 1986, Geohydrology of bedrock aquifers in the northern Great Plains in parts of Montana, North Dakota, South Dakota and Wyoming: U.S. Geological Survey Professional Paper 1402-E, 87 p.
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Downey, J. S., 1984, Geohydrology of the Madison and associated aquifers in parts of Montana, North Dakota, South Dakota and Wyoming: U.S. Geological Survey Professional Paper 1273-G, 47 p.