Minnesota Geological Survey


M83 is a digital (binary) file for Aerial gamma radiation in
Minnesota and adjacent areas of North Dakota and South Dakota;
Minnesota Geological Survey Miscellaneous Map Series M-83.

March, 1996.


There are four maps on a single plate with accompanying text.
One map is a generalized image of the Quaternary Geology of
Minnesota.  The other three are colored isopleth images
showing the distribution and range of concentrations of
Uranium, Thorium and Potassium at the surface in Minnesota.  

The maps are at a scale of 1:3,168,000 and are available via
anonymous ftp as a binary pdf file.  It is necessary to use
a suitable reader to view the document once transferred.  

Printed copies may be requested from the MGS map sales office
(612-627-4782)