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  1. Title: Geologic atlas of Goodhue County, Minnesota, C-12, Part B, Plate 10, Sinkholes, Sinkhole Probability, and Springs and Seeps

    Contributors:

    Summary: Maps showing distribution of karst (carbonate rock with caves, springs) units and features and karst hydrology in carbonate rocks susceptible to being dissolved by acidic ground water, scale 1:100000, Goodhue County.

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  2. Title: Engineering Aspects of Karst

    Contributors:

    Summary: This polygon shapefile is a digital version of U.S. Geological Survey Open File Report 2004-1352, Engineering Aspects of Karst. The open-file report is a map with accompanying explanatory text that shows areas containing distinctive surficial and subterranean features developed by solution of carbonate and other rocks and characterized by closed depressions, sinking streams, and cavern openings. These areas are commonly referred to as karst. Included on the map are areas of features analogous to karst also called pseudokarst, which is karst-like terrain produced by processes other than the dissolution of rocks. Also included are lines indicating areas in which extensive historical subsidence has occurred. When used in its broadest sense, the term karst encompasses many surface and subsurface conditions that give rise to problems in engineering geology. Most of these problems pertain to subterranean features that affect foundations, tunnels, reservoir tightness, and diversion of surface drainage. Subterranean openings may be the habitat of unique and, in some cases, endangered fauna. This layer is part of the 1997-2014 edition of the National Atlas of the United States. These data are intended for geographic display and analysis at the national level, and for large regional areas. The data should be displayed and analyzed at scales appropriate for 1:7,500,000-scale data. No responsibility is assumed by the U.S. Geological Survey in the use of these data. National Atlas of the United States. (2005). Engineering Aspects of Karst. National Atlas of the United States. Available at: http://purl.stanford.edu/cq710tk2389. National Atlas of the United States. (2005). Engineering Aspects of Karst. National Atlas of the United States. Available at: http://purl.stanford.edu/cq710tk2389. The data set for Engineering Aspects of Karst consists of two map layers. The map layer karst0p075 contains information on karst regions. The map layer karst0l075 contains information on the extent of areas of subsidence. The map layers are distributed and should be used together. These map layers are intended to provide users with a national scale karst data coverage to use for graphic and demonstration purposes until a new, improved map layer is developed. These data are not intended for and should not be used for site-specific research. This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.

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  3. Title: Ground-water resources of Brown County

    Contributors:

    Summary: Scale approximately 1:63,000. by David J. Sugar ; Diane Hamilton, cartographer. "Total copies printed: 500."

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  4. Title: World (Ore deposits, 2003)

    • Point data
    • 2003
    Contributors:

    Summary: Ore deposits.MRDS contains variable-length records of metallic andnonmetallic mineral resources of the world. A recordcontains descriptive information about mineral deposits andmineral commodities. The types of information in the database include deposit name, location, commodity, depositdescription, geologic characteristics, production,reserves, potential resources, and references. The MineralResource Data System master database is not accessible viathe WWW. The large number of multi-valued fields make itdifficult to import all the fields into a data format thatcan be utilized by the ArcView Internet Map ServerSoftware. This dataset contains all MRDS locations, butonly 44 of the possible 226 fields. A data structure wascreated in Access 97. Data was imported into the filestructure and then processed into Arc View, where it wastransformed into shape files that are used by the IMSsoftware to serve the MRDS data and permit access via the www.

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  5. Title: Boston

    Contributors:

    Summary: Bird's-eye view of central Boston. "Copyright "David A. Fox 1983." Oriented with north toward the upper right.

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  6. Title: Stratigraphy and structure of the Mesabi range, Minnesota, Bulletin 38, Plate 6

    Contributors:

    Summary: Sheet 1 of 11 sheets, Structure contour (contour lines of equal elevation that map features in the subsurface produced by rock deformation or erosion), map of the Mesabi Range, Minnesota, scale 1:31,250.

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  7. Title: Stratigraphy and structure of the Mesabi range, Minnesota, Bulletin 38, Plate 10

    Contributors:

    Summary: Sheet 5 of 11 sheets, Structure contour (contour lines of equal elevation that map features in the subsurface produced by rock deformation or erosion), map of the Mesabi Range, Minnesota, scale 1:31,250.

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  8. Title: Stratigraphy and structure of the Mesabi range, Minnesota, Bulletin 38, Plate 3

    Contributors:

    Summary: Sheet 3 of 4 sheets, Stratigraphy (vertical and time sequence of geologic units) of Biwabik Formation, Mesabi Range, Minnesota, scale 1 inch = 11.2 miles.

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  9. Title: Stratigraphy and structure of the Mesabi Range, Minnesota, Bulletin 38, Plate 4

    Contributors:

    Summary: Sheet 4 of 4 sheets, Stratigraphy (vertical and time sequence of geologic units) of Biwabik Formation, Mesabi Range, Minnesota, scale 1 inch = 11.2 miles.

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  10. Title: Stratigraphy and structure of the Mesabi range, Minnesota, Bulletin 38, Plate 8

    Contributors:

    Summary: Sheet 3 of 11 sheets, Structure contour (contour lines of equal elevation that map features in the subsurface produced by rock deformation or erosion), map of the Mesabi Range, Minnesota, scale 1:31,250.

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  11. Title: Stratigraphy and structure of the Mesabi range, Minnesota, Bulletin 38, Plate 16

    Contributors:

    Summary: Sheet 11 of 11 sheets, Structure contour (contour lines of equal elevation that map features in the subsurface produced by rock deformation or erosion), map of the Mesabi Range, Minnesota, scale 1:31,250.

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  12. Title: Stratigraphy and structure of the Mesabi range, Minnesota, Bulletin 38, Plate 11

    Contributors:

    Summary: Sheet 6 of 11 sheets, Structure contour (contour lines of equal elevation that map features in the subsurface produced by rock deformation or erosion), map of the Mesabi Range, Minnesota, scale 1:31,250.

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  13. Title: Stratigraphy and structure of the Mesabi range, Minnesota, Bulletin 38, Plate 12

    Contributors:

    Summary: Sheet 7 of 11 sheets, Structure contour (contour lines of equal elevation that map features in the subsurface produced by rock deformation or erosion), map of the Mesabi Range, Minnesota, scale 1:31,250.

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  14. Title: Stratigraphy and structure of the Mesabi range, Minnesota, Bulletin 38, Plate 5

    Contributors:

    Summary: Interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) of the Precambrian of the Westernmost Mesabi District, Minnesota, scale 1:62,500.

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  15. Title: Stratigraphy and structure of the Mesabi range, Minnesota, Bulletin 38, Plate 2

    Contributors:

    Summary: Sheet 2 of 4 sheets, Stratigraphy (vertical and time sequence of geologic units) of Biwabik Formation, Mesabi Range, Minnesota, scale 1 inch = 11.2 miles.

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  16. Title: Stratigraphy and structure of the Mesabi range, Minnesota, Bulletin 38, Plate 1

    Contributors:

    Summary: Sheet 1 of 4 sheets, Stratigraphy (vertical and time sequence of geologic units) of Biwabik Formation, Mesabi Range, Minnesota, scale 1 inch = 11.2 miles.

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  17. Title: Stratigraphy and structure of the Mesabi range, Minnesota, Bulletin 38, Plate 15

    Contributors:

    Summary: Sheet 10 of 11 sheets, Structure contour (contour lines of equal elevation that map features in the subsurface produced by rock deformation or erosion), map of the Mesabi Range, Minnesota, scale 1:31,250.

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  18. Title: Stratigraphy and structure of the Mesabi range, Minnesota, Bulletin 38, Plate 7

    Contributors:

    Summary: Sheet 2 of 11 sheets, Structure contour (contour lines of equal elevation that map features in the subsurface produced by rock deformation or erosion), map of the Mesabi Range, Minnesota, scale 1:31,250.

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  19. Title: Stratigraphy and structure of the Mesabi range, Minnesota, Bulletin 38, Plate 9

    Contributors:

    Summary: Sheet 4 of 11 sheets, Structure contour (contour lines of equal elevation that map features in the subsurface produced by rock deformation or erosion), map of the Mesabi Range, Minnesota, scale 1:31,250.

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  20. Title: Stratigraphy and structure of the Mesabi range, Minnesota, Bulletin 38, Plate 17

    Contributors:

    Summary: Map of the thickness of drift (thickness of unconsolidated sediments overlying the bedrock surface, Mesabi Range, Minnesota, scale 1:125,000.

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