Geologic map of the Dillon 1°x2° quadrangle, Idaho and Montana

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Description The digital ARC/INFO databases included in this website provide a GIS database for the geologic map of the Dillon 1 degree by 2 degree quadrangle of southwest Montana and east-central Idaho. The geologic map was orginally published as U.S. Geological Sur
Originators Ruppel, Edward T.; O'Neill, J. Michael; and Lopez, David A.
Publication U.S. Geological Survey Miscellaneous Investigations Series Map I-1803-H

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formation name and line type