National Geologic Map Database
Product Description Page
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Title: General geology of the Harold D. Roberts tunnel, Colorado
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Author(s): Robinson, C.S., Warner, L.A., and Wahlstrom, E.E.
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Publishing Organization: U.S. Geological Survey
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Series and Number: Professional Paper 831-B
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Larger Work: Engineering geology of the Harold D. Roberts tunnel, Colorado
- Publication Date: 1974
- Map Scale: 1:24,000
- Cross Section: Yes
- North Latitude: 39° 38' 0" N (39.6333)
- South Latitude: 39° 27' 30" N (39.4583)
- East Longitude: 105° 40' 0" W (-105.6667)
- West Longitude: 106° 2' 45" W (-106.0458)
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* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.