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GIS Data for Preliminary Geologic Map of the Greeley 1 Degree x 2 Degrees Quadrangle, Colorado and Wyoming

Published by U.S. Geological Survey | Department of the Interior | Catalog Last Checked: August 01, 2026 at 03:48 AM | Dataset Last Updated: May 29, 2026 at 12:00 AM
This U.S. Geological Survey (USGS) data release provides a digital geospatial database for the preliminary geologic map of the Greeley 1 degree x 2 degrees quadrangle, Colorado and Wyoming (Braddock and Cole, 1978). 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 USGS Open-File Report 78-532 (Braddock and Cole, 1978). The 4.7 million-acre map area represents the geology at a publication scale of 1:250,000. References: Braddock, W.A., and Cole, J., 1978, Preliminary geologic map of the Greeley 1 degree x 2 degrees quadrangle, Colorado and Wyoming: U.S. Geological Survey Open-File Report 78-532, Report: 9 p.; 1 Plate: scale 1:250,000; https://doi.org/10.3133/ofr78532. 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://pubs.er.usgs.gov/publication/tm11B10.

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