Log like concretion in Fort Union formation, 3 miles south of Culbertson, Roosevelt County, Montana. 1910.
Dates
Date Taken
1910
Summary
Log like concretion in Fort Union formation, 3 miles south of Culbertson, Roosevelt County, Montana. 1910. Plate 6-C in U.S. Geological Survey. Professional paper 120. 1919.
Summary
Log like concretion in Fort Union formation, 3 miles south of Culbertson, Roosevelt County, Montana. 1910. Plate 6-C in U.S. Geological Survey. Professional paper 120. 1919.
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