Geologic and structure maps of the Wallace 1°x2° quadrangle, Montana and Idaho: A digital database

Online link https://geo-nsdi.er.usgs.gov/metadata/map-i/1509/a/metadata.faq.html
Description This dataset was digitized by the U.S. Geological Survey EROS Data Center and U.S. Geological Survey Spokane Field Office for input into an Arc/Info geographic information systsem (GIS) The digital geologic map database can be queried in many ways to pro
Originators Harrison, Jack E.; Griggs, A. B.; Wells, J. D.; Kelley, W. N.; and Derkey, Pamela D.
Publication U.S. Geological Survey Miscellaneous Investigations Series Map I-1509-A

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