National Geologic Map Database
Product Description Page
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Title: Preliminary unevaluated geologic map of the Ledger - Dunkirk area, Pondera and Toole Counties, Montana
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Author(s): Holmes, K.H., and Bretz, T.E.
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Publishing Organization: U.S. Geological Survey
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Series and Number: Open-File Report OF-78-1041
- Publication Date: 1978
- Map Scale: 1:31,680
- Cross Section: Yes
- North Latitude: 48° 29' 2" N (48.4840)
- South Latitude: 48° 13' 23" N (48.2230)
- East Longitude: 111° 37' 37" W (-111.6270)
- West Longitude: 111° 55' 12" W (-111.9200)
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* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.