Geologic diagram, Cedar Valley Formation, southern Minnesota, scale 1 inch = 3 miles. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23382.pdf
Geologic diagrams, Cedar Valley Formation, southern Minnesota and adjacent northern Iowa, scale 1 inch = 3 miles. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23383.pdf
Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of the Gunflint Lake quadrangle, scale 1:24,000. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn22421.pdf
Bedrock hydrogeology (ground water information) map of Minnesota, scale 1:500,000. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn22619.pdf
Generalized interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of east-central Minnesota, scale 1 inch = about 8 miles. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23384.pdf
Bouguer gravity anomaly map (anomaly related to different densities of rocks in the upper crust, Bouguer anomaly is a corrected difference between an observed gravity measurement and value predicted from a generalized earth model), shown as contour lines (isolines) of equal value, Bemidji quadrangle, scale 1:250,000. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn22420.pdf
Bouguer gravity anomaly map (anomaly related to different densities of rocks in the upper crust, Bouguer anomaly is a corrected difference between an observed gravity measurement and value predicted from a generalized earth model), shown as contour lines (isolines) of equal value, Brainerd quadrangle, scale 1:250,000. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn22419.pdf