National Geologic Map Database
General Information
- Title: Map showing potential sources of gravel and crushed-rock aggregate, in the Boulder-Fort Collins-Greeley area, Front Range Urban Corridor, Colorado
- Author(s): Colton, R.B., and Fitch, H.R.
- Publishing Organization: U.S. Geological Survey
- Series and Number: Miscellaneous Investigations Series Map I-855-D
- Publication Date: 1974
- Map Scale: 1:100,000
- Cross Section: None
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