National Geologic Map Database
Product Description Page
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Title: Subsurface stratigraphy of the Heath shale and Amsden formation in central Montana
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Author(s): Nieschmidt, C.L.
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Publishing Organization: U.S. Geological Survey
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Series and Number: Oil and Gas Investigations Chart OC-50
- Publication Date: 1953
- Map Scale: 1:1,200,000
- Cross Section: None
- North Latitude: 47° 45' 0" N (47.7500)
- South Latitude: 45° 30' 0" N (45.5000)
- East Longitude: 106° 0' 0" W (-106.0000)
- West Longitude: 110° 27' 30" W (-110.4583)
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