Total magnetic intensity anomaly (relative to the earth's magnetic field), color coded, scale 1:250,000. Interpretation of magnetic data collected from airborne surveys, the map colors indicate the distribution and concentration of magnetic minerals (primarily iron-bearing) within the upper crust of the earth. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn21102.pdf
Total magnetic intensity anomaly (relative to the earth's magnetic field), color coded, scale 1:250,000. Interpretation of magnetic data collected from airborne surveys, the map colors indicate the distribution and concentration of magnetic minerals (primarily iron-bearing) within the upper crust of the earth. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn21104.pdf
Total magnetic intensity anomaly, contour, scale 1:250,000. Interpretation of magnetic data collected from airborne surveys, the map contours (lines of equal magnetic intensity) indicate the distribution and concentration of magnetic minerals (primarily iron-bearing) within the upper crust of the earth. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn21105.pdf
Total magnetic intensity anomaly (relative to the earth's magnetic field), color coded, scale 1:250,000. Interpretation of magnetic data collected from airborne surveys, the map colors indicate the distribution and concentration of magnetic minerals (primarily iron-bearing) within the upper crust of the earth. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn21106.pdf
Total magnetic intensity anomaly, contour, scale 1:250,000. Interpretation of magnetic data collected from airborne surveys, the map contours (lines of equal magnetic intensity) indicate the distribution and concentration of magnetic minerals (primarily iron-bearing) within the upper crust of the earth. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn21107.pdf
Map showing the thickness of unconsolidated materials over the bedrock surface (depth to bedrock) and the elevation of the bedrock surface (bedrock topography), scale 1:100,000, Olmsted County. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn22228.pdf
Maps showing where and how much ground water may be present and aquifer characteristics of the bedrock geologic units, scale 1:200,000, Olmsted County. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn22229.pdf
Map showing the susceptibility of the ground water system (bedrock and unconsolidated sediment aquifers) to contamination, scale 1:100,000, Olmsted County. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn22230.pdf
Balaban, N.H.; Alexander, E. Calvin, Jr.; Maki, Geri L.
Date Created:
1988
Description:
Map showing location of sinkholes and likelihood of future sinkhole development, scale 1:100,000, Olmsted County. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn22231.pdf
Map showing requirements of well construction practices and regulations as they relate to geology and location of a well on the land surface and surroundings, scale 1:100,000, Olmsted County. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn22232.pdf
Maps showing locations and types of bedrock aggregate and sand and gravel resources, scale 1:100,000, Olmsted County. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn22233.pdf
Balaban, N.H.; Bloomgren, Bruce A.; Tipping, Robert G.; Wahl, Timothy E.
Date Created:
1989
Description:
Map showing locations of water wells, soil borings, outcrops and cuttings samples collected during water well drilling. Distribution and sources of primary information tthat guide the geologic interpretations used to make the geologic maps in the series, scale 1:100,000, Hennepin County. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn22234.pdf
Balaban, N.H.; Olsen, Bruce M.; Bloomgren, Bruce A.
Date Created:
1989
Description:
Map showing interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) with cross section diagrams, scale 1:100,000, Hennepin County. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn22235.pdf
Map showing interpretations of Quaternary (Pleistocene [glacial] and Holocene [post-glacial]) surficial geology (distribution and type of materials at the land surface), scale 1:100,000, Hennepin County. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn22236.pdf
Balaban, N.H.; Bloomgren, Bruce A.; Cleland, Jane M.; Olsen, Bruce M.
Date Created:
1989
Description:
Map showing the thickness of unconsolidated materials over the bedrock surface (depth to bedrock) and the elevation of the bedrock surface (bedrock topography), scale 1:100,000, Hennepin County. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn22237.pdf
Maps showing where and how much ground water may be present and aquifer characteristics of the unconsolidated (not rock) Quaternary sediments (glacial and stream sediments), scale 1:100,000; 1:1333,333. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn22238.pdf
Maps showing where and how much ground water may be present and aquifer characteristics of the bedrock geologic units, scale 1:150,000, Hennepin County. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn22239.pdf
Map showing the susceptibility of the ground water system (bedrock and unconsolidated sediment aquifers) to contamination, scale 1:100,000. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn22240.pdf
Balaban, N.H.; Olsen, Bruce M.; Bloomgren, Bruce A.
Date Created:
1989
Description:
Map showing requirements of well construction practices and regulations as they relate to geology and location of a well on the land surface and surroundings, scale 1:100,000, Hennepin County. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn22241.pdf
Maps showing locations and types of bedrock aggregate and sand and gravel resources, scale 1:100,000, Hennepin County. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn22249.pdf
Map showing interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) with cross section diagrams, scale 1:100,000, Olmsted County. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn22226.pdf
Map showing interpretations of Quaternary (Pleistocene [glacial] and Holocene [post-glacial]) surficial geology (distribution and type of materials at the land surface), scale 1:100,000, Olmsted County. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn22227.pdf
Balaban, N.H.; Hobbs, Howard C.; Olsen, Bruce M.; Wahl, Timothy E.
Date Created:
1988
Description:
Map showing locations of water wells, soil borings, outcrops and cuttings samples collected during water well drilling. Distribution and sources of primary information tthat guide the geologic interpretations used to make the geologic maps in the series, scale 1:100,000, Olmsted County. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn22225.pdf
Chandler, Val W.; Mills, Sarah J.; Ferderer, Robert J.
Date Created:
1987
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, International Falls quadrangle, scale 1:250,000. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn22456.pdf
Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of the Sherry Lake quadrangle, scale 1:24,000. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn22458.pdf