8 results returned
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Title: Simple Bouguer gravity map of Minnesota, Two Harbors sheet, M-9
Contributors:- Not specified
- 1970
Summary: 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.
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Title: Simple Bouguer gravity map of Minnesota, Hibbing sheet, M-3
Contributors:- Not specified
- 1968
Summary: 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, Hibbing quadrangle, scale 1:250,000.
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Title: San Francisco, California, Earthquake and Fire, 1906 (Raster Image)
Contributors:- Raster data
- 2008
Summary: This layer is a georeferenced raster image of the historic paper map entitled: [San Francisco, California, showing the area destroyed by fire, April 18-21, 1906]. It was published by R.J. Waters & Co. in 1906. Scale [ca. 1:21,000]. Covers the northeastern portion of the city showing burnt district in red. The image inside the map neatline is georeferenced to the surface of the earth and fit to the California Zone III State Plane Coordinate System NAD83 (in Feet) (Fipszone 0403). All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map. This map shows features such as the burnt district, roads, drainage, selected public buildings, wharves, and more. Relief shown by contours. This layer is part of a selection of digitally scanned and georeferenced historic maps from The Harvard Map Collection as part of the Imaging the Urban Environment project. Maps selected for this project represent major urban areas and cities of the world, at various time periods. These maps typically portray both natural and manmade features at a large scale. The selection represents a range of regions, originators, ground condition dates, scales, and purposes.
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Title: Simple Bouguer gravity map of Minnesota, Hibbing sheet, M-56
Contributors:- Not specified
- 1985
Summary: 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, Hibbing quadrangle, scale 1:250,000.
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Title: Simple Bouguer gravity map of Minnesota, New Ulm sheet, M-43
Contributors:- Not specified
- 1980
Summary: 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, New Ulm quadrangle, scale 1:250,000.
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Title: Simple Bouguer gravity map of Minnesota, Roseau sheet, M-12
Contributors:- Not specified
- 1973
Summary: 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, Roseau quadrangle, scale 1:250,000.
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Title: Geologic map of Minnesota, New Ulm sheet, bedrock geology
Contributors:- Not specified
- 1970
Summary: 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.
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Title: Interpretation of Lake Washington magnetic anomaly, Meeker County, Minnesota, RI-4, Plate 1
Contributors:- Not specified
- 1965
Summary: Magnetic (interpretation of magnetic data collected from airborne or ground surveys, indicating the distribution and concentration of magnetic minerals (primarily iron-bearing) map of southeastern part of Meeker County, Minnesota, scale 1:62,500.