Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="text-align:Justify;"><SPAN><SPAN>The development of karst, sink holes, caves, and solution breccias is common in the Madison Group.</SPAN></SPAN><SPAN><SPAN /></SPAN><SPAN><SPAN>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.</SPAN></SPAN></P><P><SPAN /></P></DIV></DIV></DIV>
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.