National Geologic Map Database
Product Description Page
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Title: Reconnaissance geologic map of parts of the Twin Peaks and Blanca Peak quadrangles, Alamosa, Costilla, and Huerfano Counties, Colorado
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Author(s): Johnson, B.R., and Bruce, R.M.
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Publishing Organization: U.S. Geological Survey
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Series and Number: Miscellaneous Field Studies Map MF-2169
- Publication Date: 1991
- Map Scale: 1:24,000
- Cross Section: Yes
- North Latitude: 37° 37' 30" N (37.6250)
- South Latitude: 37° 31' 4" N (37.5178)
- East Longitude: 105° 25' 50" W (-105.4306)
- West Longitude: 105° 35' 0" W (-105.5833)
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Unpublished digital GIS files by the National Park Service Geologic Resources Inventory
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Adapted from this USGS map [NOTE: this link does not work in the Safari browser.]
* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.