Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Minnesota, scale 1:1,000,000. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn22393.pdf
Sims, Paul K.; Morey, G.B.; Ojakangas, Richard W.; Viswanathan, S.
Date Created:
1970
Description:
Map showing interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of the Hibbing quadrangle, scale 1:250,000. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn22375.pdf
Austin, George S.; Grant, J.A.; Ikola, Rodney J.; Sims, Paul K.
Date Created:
1970
Description:
Map showing interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of the New Ulm quadrangle, scale 1:250,000. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn22376.pdf
Craddock, Campbell; Mooney, Harold M.; Kolehmainen, V.
Date Created:
1970
Description:
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, Minnesota and northwestern Wisconsin, scale 1:1,000,000. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn22389.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, Two Harbors quadrangle, scale 1:250,000. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn22388.pdf
Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of the Minneapolis Quadrangle, Minnesota, Surficial geology, scale: 1:48,000. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23397.pdf
Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of the Minneapolis Quadrangle, Minnesota, Bedrock geology, scale: 1:48,000. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23398.pdf
Generalized interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Central part of Vermillion District, Minnesota, scale 1 inch = about 1 mile. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23405.pdf
Lineament (features that form a line) map of Gabbro Lake Quadrangle, Lake County, Minnesota, scale 1 inch = about 1.5 miles. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23406.pdf
Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of Cloquet Quadrangle, Carlton County, Minnesota, scale 1:24,000. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23366.pdf
Summary of top-direction (identification of the tops of volcanic lava flows, characteristics that can be used for the identification of lava flow tops), data in part of the Gabbro Lake Quadrangle, Lake County, Minnesota, showing locations of cross-sections. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn23407.pdf
United States Department of the Interior Geological Survey; State of Minnesota, Department of Administration
Date Created:
1970
Description:
Clubhouse Lake quadrangle topographic map (N4730-W9330/7.5) featuring handwritten notations by Ray Segar in red ink and pencil regarding logging railroad lines and camps in the Clubhouse Lake area. The hand written notations include information on the following logging camps noted with ‘C’.
United States Department of the Interior Geological Survey; State of Minnesota, Department of Administration
Date Created:
1970
Description:
Wabana quadrangle topographic map (N4722.5-W9330/7.5) featuring handwritten notations by Ray Segar in red ink regarding logging railroad lines, pencil regarding logging camps in the Wabana Lake area.