minerals

Bulletins consist of illustrated text,  maps and cross-sections. Most are bedrock reports  from 1950-1969 at a scale of 1:62,500.  Paper copies were lost in the flood in 2011. 
Georeferenced map images for the Bulletins and the Environmental Geology Series are posted at http://geothermal.isgs.illinois.edu/ArcGIS/rest/services/aasggeothermal

The mapping program produces bedrock and surficial geologic maps by town, quadrangle and watershed. It is funded through STATEMAP, an annual competitive grant process through the National Cooperative Geologic Mapping Program of the U.S.Geological Survey. The State Mapping Advisory Committee, comprised of legislators, consultants, geologists, and mineral industry personnel, meets with the State Geologist to review the map program and make recommendations concerning the goals of this project.

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General Interest Publications

Photograph (M. Kierstad): Towers at Belvidere Mtn.