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Geologic and structure map of the Choteau 1° x 2° quadrangle, western Montana: A digital database

January 1, 1994

The geologic and structure map of Choteau 1 x 2 degree quadrangle (Mudge and others, 1982) was originally converted to a digital format by Jeff Silkwood (U.S. Forest Service and completed by the U.S. Geological Survey staff and contractor at the Spokane Field Office (WA) in 2000 for input into a geographic information system (GIS). The resulting digital geologic map (GIS) database can be queried in many ways to produce a variey of geologic maps. Digital base map data files (topography, roads, towns, rivers and lakes, etc.) are not included: they may be obtained from a variety of commercial and government sources. This database is not meant to be used or displayed at any scale larger than 1:250,000 (e.g. 1:100,000 or 1:24,000. The digital geologic map graphics and plot files (chot250k.gra/.hp/.eps and chot-map.pdf) that are provided in the digital package are representations of the digital database. They are not designed to be cartographic products.

Citation Information

Publication Year 1982
Title Geologic and structure map of the Choteau 1° x 2° quadrangle, western Montana: A digital database
DOI 10.3133/i1300
Authors Melville R. Mudge, Robert L. Earhart, James W. Whipple, Jack E. Harrison
Publication Type Report
Publication Subtype USGS Numbered Series
Series Title IMAP
Series Number 1300
Index ID i1300
Record Source USGS Publications Warehouse