GIS Data for Geologic Map of the Craig 1 Degree x 2 Degrees Quadrangle, Northwestern Colorado

This U.S. Geological Survey (USGS) data release provides a digital geospatial database for the geologic map of the Craig 1 degree x 2 degrees quadrangle, northwestern Colorado (Tweto, 1976). Attribute tables and geospatial features (points, lines, and polygons) conform to the Geologic Map Schema (USGS NCGMP, 2020) and represent the geologic map as published in the USGS Miscellaneous Investigations Series Map I-972. The 4.65-million-acre map area represents the geology at a publication scale of 1:250,000.

References:
Tweto, O., 1976, Geologic map of the Craig 1 degree x 2 degrees quadrangle, northwestern Colorado: U.S. Geological Survey, Miscellaneous Investigations Series Map I-972, scale 1:250,000, https://doi.org/10.3133/i972.
U.S. Geological Survey National Cooperative Geologic Mapping Program, 2020, GeMS (Geologic Map Schema) - A standard format for the digital publication of geologic maps: U.S. Geological Survey Techniques and Methods, book 11, chap. B10, 74 p., https://doi.org//10.3133/tm11B10.