Aerial gamma radiation in Minnesota and adjacent areas of North Dakota and South Dakota, M-83
Description
Maps showing general Quaternary age surface geology of Minnesota and distribution of uranium, thorium and potassium-40 in surface sediments, scale 1:3,168,000.
Lively, R. S., Morey, G.B. (1996). Aerial gamma radiation in Minnesota and adjacent areas of North Dakota and South Dakota, M-83. Minnesota Geological Survey. https://reflections.mndigital.org/catalog/mgs:961 (map)