Big Ten Academic Alliance Geospatial Discovery Portal

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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. Bedrock Geology of Iowa

2017. Iowa Geological Survey. Bedrock Geology of Iowa This zip file contains a file geodatabase with the following feature classes: Bedrock Faults Bedrock Geology Bedrock Topogr...

7. Quaternary Geology Map: Michigan

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

8. Statemap Surficial Geologys: Iowa

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

9. 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...

10. 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...

11. 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...

12. Geology of Beacon Heights: Antarctica

9999. Projection: Lambert Conformal Conic Projection: Standard Parallels -76°40' and -79°20'; Series: NZGS Miscellaneous Series.

13. Statemap Bedrock Geologys: Iowa

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

14. 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 ...

15. 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...

16. 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...

17. 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...

18. 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...

19. 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.

20. 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...

21. 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...

22. 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...

23. Thickness of 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_THICKNESS is a polygon shapefile giving thickness (in feet) of the Danville Coal Member in Indiana. COAL_AVAILABILITY...

24. Thickness of the Springfield Coal Member (Carbondale Formation, Pennsylvanian System), Derived from Coal Availability Investigations: Indiana, 2002

2002. Indiana Geological Survey and Carol L. Conolly. COAL_AVAILABILITY_SPRINGFIELD_IN_THICKNESS is a polygon shapefile giving thickness (in feet) of the Springfield Coal Member in Indiana. COAL_AVAILA...

25. Late Wisconsinan Glacial Border 1:100,000

1995. Pennsylvania Bureau of Topographic and Geologic Survey, Dept. of Conservation and Natural Resources. Late in 1994, the Pennsylvania Bureau of Topographic and Geologic Survey was asked to develop a digital physiographic provinces map at 1:100,000 sc...

26. Late Wisconsinan Glacial Border 1:500,000

1995. Pennsylvania Bureau of Topographic and Geologic Survey, Dept. of Conservation and Natural Resources. Late in 1994, the Pennsylvania Bureau of Topographic and Geologic Survey was asked to develop a digital physiographic provinces map at 1:100,000 sc...

27. Sand and Gravel Resource Potential in Mapped Surficial Material: Indiana, 2003

2003. Indiana Geological Survey and Christina James (digital compiler). SAND_GRAVEL_RESOURCES_IN is a polygon shapefile that identifies sand and gravel permissive tracts in the surficial unconsolidated deposits of India...

28. Abandoned Quarries: Indiana, 2003

2003. Indiana Geological Survey, Denver Harper (Data Processor), Curtis H. Ault (Data Compiler), Paul Irwin (Data Processor), and Walter Hasenmueller (Data Compiler). QUARRIES_ABANDONED_IN was derived from a comma-delimited text file named QUALOC.TXT contained on the following CD-ROM publication: Hasenmueller, W....

29. Abandoned Sand and Pits: Indiana, 2003

2003. Indiana Geological Survey, Paul Irwin (Digital compiler), Walter Hasenmueller (Compiler), Chris Dintaman (Digital compiler), and Denver Harper (Digital compiler). SAND_GRAVEL_PITS_ABANDONED_IN is a point shapefile that shows the locations of abandoned sand and gravel pits in Indiana. It is derived from an unp...

30. Bedrock Topography Contours: Indiana, 2003

2003. David A. Held (digital compiler), Indiana Geological Survey, Henry H. Gray (author, compiler), Chris Dintaman (digital compiler), and Kimberly H. Sowder (digital compiler). Bedrock topography was converted from the original published map, Indiana Geological Survey Miscellaneous Map 36. The contours define the elevation...

31. Buried Bedrock Surface: Illinois, 2004

1994. Herzog, B.L.. B.J. Stiff, C.A. Chenoweth, K.L. Warner, J.B. Sievering, C. Avery. The Buried Bedrock Surface of Illinois map represents the first revision of the bedrock topography map since the second edition was published by th...

32. Depth to the Springfield Coal Member (Carbondale Formation, Pennsylvanian System), Derived from Coal Availability Investigations: Indiana, 2002

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

33. Driftless Areas: Illinois, 2004

1994. Illinois State Geological Survey. This is a polygon feature class containing driftless areas in Illinois. These areas are analogous to areas of the state where the bedrock surface i...

34. Elevation Ranges of the Colchester Coal Member (Linton Formation, Pennsylvanian) in West-Central Indiana: Indiana, 2000

2000. Denver Harper (Data and GIS compiler) and Indiana Geological Survey. From 1985 to 1994, a series of reports on coal resources of selected counties in Indiana was published as part of the Special Report series of the ...

35. Elevation Ranges of the Danville Coal Member (Dugger Formation, Pennsylvanian) in West-Central Indiana: Indiana, 2002

2002. Indiana Geological Survey and Denver Harper. From 1985 to 1994, a series of reports on coal resources of selected counties in Indiana was published as part of the Special Report series of the ...

36. Elevation Ranges of the Hymera Coal Member (Dugger Formation, Pennsylvanian) in West-Central Indiana: Indiana, 2002

2002. Indiana Geological Survey and Denver Harper. From 1985 to 1994, a series of reports on coal resources of selected counties in Indiana was published as part of the Special Report series of the ...

37. Elevation Ranges of the Springfield Coal Member (Petersburg Formation, Pennsylvanian) in West-Central Indiana: Indiana, 2002

2002. Indiana Geological Survey and Denver Harper. A series of reports on coal resources of selected counties in Indiana were published as part of the Special Report series of the Indiana Geological...

38. Epicenters of Earthquakes with a Moment Magnitude Equal to or Greater Than 3.0: Indiana, 2014

2014. John Rupp (Data compiler), John Hill (Data compiler), John Steinmetz (Data compiler), Walter E. Gray (Data compiler), Nathan Eaton (GIS compiler), Indiana Geological Survey, and Matthew R. Johnson (GIS compiler). EARTHQUAKE_EPICENTERS_IN.SHP shows the locations of all known historical earthquakes in Indiana with a moment magnitude (Mw) greater than or equal ...

39. Extent of Wisconsin glaciation: Indiana, 2010

2010. Henry H. Gray (Data compiler), Sally L. Letsinger (GIS compiler), Center for Geospatial Data Analysis (CGDA), and Indiana Geological Survey. WISCONSIN_GLACIAL_LIMIT_IN.shp is a line shapefile that shows the Wisconsin glacial limit in Indiana as delineated by mapped glacial deposits at a ...

40. Geologic map - Topographic Change in Philadelphia, During the Last Century

2000. United States Geological Survey. A scope of work was developed in response to a request by the U. S. Army Corps of Engineers, Philadelphia District. The request was to perform a to...

41. GeoMorph: Becker County, Minnesota, 2013

2013. Becker County, Minnesota. Shapefile of GeoMorph (geometric morphometric) in Becker County, Minnesota.

42. Liquefaction Potential of Materials: Indiana, 2011

2011. Denver Harper (GIS compiler, Mary Parke (Data compiler), John Steinmetz (Data compiler), Walter E. Gray (Data compiler), Indiana Geological Survey, Kim Sowder (GIS compiler), and Chris Dintaman (GIS compiler). EARTHQUAKE_LIQUEFACTION_POTENTIAL_MM81_IN is a polygon shapefile that shows highly generalized categories (low, moderate, and high) of liquefaction...

43. Locations of Operation for Active Industrial Minerals Producers: Indiana, 2010

2014. Kathryn Shaffer (digital compiler) and Indiana Geological Survey. INDUSTRIAL_MINERALS_ACTIVE_2010_IN.SHP is a point shapefile that shows the locations of operation for industrial minerals producers that were activ...

44. Major Bedrock Valleys: Illinois, 2004

1994. Illinois State Geological Survey. This feature dataset shows continuous lines representing the lowermost elevations/locations of (buried) bedrock valleys in the state of Illinois. A...

45. Natural Features: Indiana, 2002

2002. Bernardin, Lochmueller and Associates. Natural_features_usgs_in is a point shapefile showing the locations and attribute values of natural features extracted from the Geographic Names In...

46. Natural gamma-ray logs in unconsolidated sediments: Indiana, 2006

2006. Steve Brown (data compiler, digital compiler), Jennifer Olejnik (data compiler, digital compiler), Indiana Geological Survey (IGS), Jack Haddan (data compiler, digital compiler), Ned Bleuer (data compiler), and Marni Dickson (data compiler). UNCONSOLIDATED_GAMMA_LOGS_IGS_IN.shp shows the locations of the Indiana Geological Survey's gamma-logs that were taken from 1978 to 2005. This shap...

47. Number of Mapped Cave Entrances per Square Kilometer in Southern Indiana: Indiana, 2002

2002. Indiana Geological Survey. KARST_CAVE_DENSITY_IN is a polygon shapefile that shows the density (i.e., number per square kilometer) of mapped cave entrances in Silurian, Devon...

48. Physiographic Divisions: Illinois, 2004

1993. Illinois State Geological Survey. This is an ESRI feature class showing boundaries for physiographic divisions in Illinois. Data are originally from ISGS Report of Investigations 12...

49. Physiographic Regions: Indiana, 2002

2002. Kim Sowder (GIS compiler), Indiana Geological Survey, and H. H. Gray (Data compiler). PHYSIOGRAPHY_SR61_IN is a polygon shapefile that shows the physiographic regions of Indiana. Detailed descriptions of these regions can be obtained...

50. Predicted Responses of Geologic Materials to Seismically Induced Ground Shaking: Indiana, 2011

2011. Denver Harper (GIS compiler, John Hill (Data compiler), Indiana Geological Survey, Kim Sowder (GIS compiler), and Chris Dintaman (GIS compiler). SEISMIC_SHAKING_PREDICTED_RESPONSE_RP35_IN is a polygon shapefile that shows the distribution and classification of National Earthquake Hazards Red...