Map showing configuration of the top of the Madison Group, Glasgow 1-degree by 2-degree quadrangle, Montana [cartographic material] / by R.D. Feltis ; prepared by the U.S. Geological Survey in cooperation with the Montana Bureau of Mines and Geology.
Relief shown by contours and spot heights. "Topographic contour interval 100 feet." "Base from U.S. Geological Survey 1954. Limited revision, 1966." "Contours mapped in January 1980." "This map is one of a series that shows the configuration of the top of the Madison Group of Mississippian age at a scale of 1:250,000. ... The maps are part of a preliminary study of the geohydrology of the Madison Group." Location map on envelope. Includes text and location map.
- Montana Bureau of Mines and Geology
- Held by
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