Big Ten Academic Alliance Geospatial Discovery Portal

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81. 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...

82. 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...

83. 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...

84. 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...

85. 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 ...

86. 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 ...

87. 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 ...

88. 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...

89. 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 ...

90. 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 ...

91. Geologic map - Topographic Change During the Last Century: Philadelphia, 2000

1998. 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...

92. GeoMorph: Becker County, Minnesota, 2013

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

93. 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...

94. 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...

95. 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...

96. 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...

97. 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...

98. 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...

99. 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...

100. 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...