National Geologic Map Database
General Information
- Title: Geologic map of the Black Ridge quadrangle, Delta and Montrose Counties, Colorado
- Author(s): Hansen, W.R.
- Publishing Organization: U.S. Geological Survey
- Series and Number: Geologic Quadrangle Map GQ-747
- Publication Date: 1968
- Map Scale: 1:24,000
- Cross Section: Yes
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* See base map disclaimer below
Geologic units referred to in Geolex
Additional Resources
- Links and Downloads:
- View the publication from the USGS Publications Warehouse
- Unpublished digital GIS files by the National Park Service Geologic Resources Inventory
- Adapted from this USGS map [NOTE: this link does not work in the Safari browser.]
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* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.