Big Ten Academic Alliance Geospatial Discovery Portal

Big Ten Academic Alliance Geoportal

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1. Bedrock Geology: Indiana, 2010

2010. Denver Harper (GIS compiler), Curt Ault (Data compiler), Stan Keller (Data compiler), Indiana Geological Survey, and H. H. Gray (Data compiler). BEDROCK_GEOL_MM48_IN is a polygon shapefile that shows bedrock geology of the state of Indiana at a scale of 1:500,000. The mapped stratigraphic un...

2. Bedrock Geology: Illinois, 2005

2005. Illinois State Geological Survey. This feature dataset shows the distribution and extent of the bedrock geologic units within the State of Illinois, as depicted on the map Bedrock G...

3. Michigan Bedrock Geology: Michigan

2015. Minnesota Department of Natural Resources. Bedrock geology polygons as digitized from the'1987 Michigan Bedrock Geology map.

4. Bedrock Geology: Michigan

2015. Michigan bedrock geology.

5. Quaternary Geology: Michigan

2015. Michigan Quaternary Geology.

6. Quaternary Geology Map: Michigan

2020. Digital version of Quaternary Geology maps of northern and southern Michigan.

7. Statemap Surficial Geologys: Iowa

2018. Iowa Geological Survey. Surficial Geology of Iowa Each zip file contains a shapefile of the area specified.

8. Geology - Geologic Formations: Maryland

2016. Maryland iMap. This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. This file of geologic unit polygons is for educational u...

9. Geology - Hydric Soils: Maryland

2016. Maryland iMap. This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. This data layer is a compilation of the MUPOLYGON featur...

10. Geology - Physiographic Provinces: Maryland

2016. Maryland iMap. This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. This data layer contains the Province-level physiographi...

11. Statemap Bedrock Geologys: Iowa

2018. Each zip file contains a shapefile of the specified area.

12. Surficial Geology: Wasington County, Minnesota

2016. Washington County Public Works. Shapefile of surficial geology of Washington County. Digitized from 1:100,000 scale paper version of County Atlas surficial geology map of surface ...

13. Bedrock Geology 500K - Contacts: Ohio

2016. Ohio Geographically Referenced Information Program. This dataset contains the 1:500,000-scale bedrock geology of Ohio. The bedrock geology dataset was originally derived from the 1:24,000-scale bedro...

14. Bedrock Geology 500K - Faults: Ohio

2016. Ohio Geographically Referenced Information Program. This dataset contains the 1:500,000-scale bedrock geology of Ohio. The bedrock geology dataset was originally derived from the 1:24,000-scale bedro...

15. Bedrock Geology 24K - Facies: Ohio

2016. Ohio Geographically Referenced Information Program. This dataset contains the 1:24,000-scale bedrock geology map data for Ohio. The map data were originally derived from the 1:24,000-scale bedrock-ge...

16. Quaternary Geology 500K - Lines: Ohio

2017. Ohio Geographically Referenced Information Program. Since the publication of the Glacial map of Ohio (Goldthwait, White, and Forsyth, 1961, U.S. Geological Survey Miscellaneous Geologic Investigation...

17. Karst - Karst geology of Ohio: Ohio

2017. Ohio Geographically Referenced Information Program. This data is to be used to locate known and indicated karst features, and to define the probable karst terranes.

18. Bedrock Geology of Illinois - Geologic Units, 2004

1996. Illinois State Geological Survey. This feature class shows the distribution and extent of the bedrock geologic units within the State of Illinois, as depicted on the Geologic Map of...

19. Bedrock geology of Indiana, from the Regional Geologic Map Series of the Indiana Geological Survey: Indiana, 2013

2013. N.K. Bleuer (compiler), W.J. Wayne (compiler), R.S. Nicoll (compiler), A.M. Burger (compiler), A.M. Gooding (compiler), J.L. Forsyth (compiler), H.H. Gray (compiler), G.H. Johnson (compiler), A.F. Schneider (compiler), Indiana Geological Survey, J.A. Lineback (compiler), S.J. Keller (compiler), C.E. Wier (compiler), J.R. Hill (compiler), and A.R. Gustin (digital compiler). BEDROCK_GEOL_RGM_IN is a polygon shapefile that shows the bedrock geology of the state of Indiana, produced from the Indiana Geological Survey Regi...

20. Depth to the Danville Coal Member (Dugger Formation, Pennsylvanian System), Derived from Coal Availability Investigations: Indiana, 2002

2002. Indiana Geological Survey and Carol L. Conolly. COAL_AVAILABILITY_DANVILLE_IN_DEPTH is a polygon shapefile giving depth (in feet) to the top of the Danville Coal Member in Indiana. COAL_AVAILABIL...