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
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/umn21094.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/umn21095.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/umn21103.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/umn21102.pdf
Quaternary geology map showing interpretations of Quaternary (Pleistocene [glacial] and Holocene [post-glacial]) surficial geology (distribution and type of materials at the land surface), of Chisago County, scale 1:100,000. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn22520.pdf
Aggregate (crushed rock, sand and gravel) sources and potential of Chisago County, scale 1:100,000. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn22521.pdf
Meyer, Gary N.; Jirsa, Mark A.; Jennings, Carrie E.
Date Created:
2005
Description:
Quaternary geology map showing interpretations of Quaternary (Pleistocene [glacial] and Holocene [post-glacial]) surficial geology (distribution and type of materials at the land surface), of northeast Itasca County, scale 1:100,000. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn22542.pdf
Meyer, Gary N.; Jirsa, Mark A.; Jennings, Carrie E.
Date Created:
2005
Description:
Aggregate (crushed rock, sand and gravel) endowment map of northeast Itasca County, scale 1:100,000. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn22543.pdf
Meyer, Gary N.; Jirsa, Mark A.; Jennings, Carrie E.
Date Created:
2005
Description:
Quaternary geology map showing interpretations of Quaternary (Pleistocene [glacial] and Holocene [post-glacial]) surficial geology (distribution and type of materials at the land surface), of southeast Itasca County, scale 1:100,000. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn22544.pdf
Meyer, Gary N.; Jirsa, Mark A.; Jennings, Carrie E.
Date Created:
2005
Description:
Aggregate (crushed rock, sand and gravel) endowment map of southeast Itasca County, scale 1:100,000. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn22545.pdf
Meyer, Gary N.; Jirsa, Mark A.; Jennings, Carrie E.
Date Created:
2005
Description:
Quaternary geology map showing interpretations of Quaternary (Pleistocene [glacial] and Holocene [post-glacial]) surficial geology (distribution and type of materials at the land surface), of northwest Itasca County, scale 1:100,000. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn22540.pdf
Meyer, Gary N.; Jirsa, Mark A.; Jennings, Carrie E.
Date Created:
2005
Description:
Aggregate (crushed rock, sand and gravel) endowment map of northwest Itasca County, scale 1:100,000. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn22541.pdf
The official 1873 founding document of the Minnesota Academy of Natural Sciences (later to become the Minnesota Academy of Science) contains its original Constitution and By-Laws. Article II states that, It shall be the object of the Academy to observe and investigate natural phenomena; to make collections of specimens illustrating the various departments of science; to name, classify, and preserve the same; also, to discuss such questions as shall come within the province of the Academy. The By-Laws direct the establishment of a museum, as well as regular meetings at which scientific investigations will be communicated either orally or in writing.
Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of the Minneapolis and St. Paul urban area, scale 1:48,000. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn22445.pdf
Bedrock topography (elevation of the bedrock sruface) map of the Minneapolis and St. Paul urban area, scale 1:48,000. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn22446.pdf
Jirsa, Mark A.; Olsen, Bruce M.; Bloomgren, Bruce A.
Date Created:
1986
Description:
Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of the Twin Cities, seven-county metropolitan area, scale 1:125,000. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn22442.pdf
Jirsa, Mark A.; Olsen, Bruce M.; Bloomgren, Bruce A.
Date Created:
1986
Description:
Bedrock topopgrapy (elevation of the bedrock surface) of the Twin Cities, seven-county metropolitan area, scale 1:125,000. Electronic file available at: ftp://mgsftp2.mngs.umn.edu/map_catalog/pdf/umn22443.pdf