Spatial databases for the geology of the Northern Rocky Mountains - Idaho, Montana, and Washington

Online link http://pubs.usgs.gov/of/2005/1235/
Description The spatial databases represent the original content of 43 published geologic maps, provide normalized map unit descriptions, and provide additional information and interpretation not in the original reports.
Originators Zientek, Michael L.; Derkey, Pamela D.; Miller, Robert J.; Causey, J. Douglas; Bookstrom, Arthur A.; Carlson, Mary H.; Green, Gregory N.; Frost, Thomas P.; Boleneus, David E.; Evans, Karl V.; van Gosen, Bradley S.; Wilson, Anna B.; Larsen, Jeremy C.; Kayser, Helen Z.; Kelley, William N.; and Assmus, Kenneth C.
Publication U.S. Geological Survey Open-File Report 2005-1235
Geologic map units of the various quadrangle maps within the study area boundary.
Geologic map units of the various quadrangle maps within the study area boundary.
Additional images
Dominant lithology of the geologic units in the study area, using consistent categories for all of the quadrangle maps.
https://mrdata.usgs.gov/catalog/images/OFR_2005-1235_lithology.gif
Geologic units that are predominantly igneous rock.
https://mrdata.usgs.gov/catalog/images/OFR_2005-1235_igneous.gif
Geologic units colored according to their age, with faults and dikes marked as well.
https://mrdata.usgs.gov/catalog/images/OFR_2005-1235_age.gif