National Geologic Map Database
Title: Geologic reconnaissance map of the Rules Hill and Ludwig Mountain quadrangles, La Plata County, Colorado
Author(s): Hail, W.J., Barnes, Harley, and Zapp, A.D.
Publishing Organization: U.S. Geological Survey
Series and Number: Open-File Report OF-71-143
- Publication Date: 1971
- Map Scale: 1:48,000
- Cross Section: None
- North Latitude: 37° 22' 30" N (37.3750)
- South Latitude: 37° 15' 0" N (37.2500)
- East Longitude: 107° 30' 0" W (-107.5000)
- West Longitude: 107° 45' 0" W (-107.7500)
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* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.