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41.
Natural gamma-ray logs in unconsolidated sediments: Indiana

Natural gamma-ray logs in unconsolidated sediments: Indiana

1978-2012. Indiana Geological Survey. GAMMA_RAY_LOGS_IGS_IN.shp shows the locations of the Indiana Geological Survey's natural gamma-ray logs that were collected from 1978 to 2012. It w...

42.
Number of Mapped Cave Entrances per Square Kilometer in Southern Indiana: Indiana

Number of Mapped Cave Entrances per Square Kilometer in Southern Indiana: Indiana

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...

43.
Physiographic Divisions: Illinois, 2004

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...

44.
Physiographic Regions: Indiana

Physiographic Regions: Indiana

2002. Indiana Geological Survey. PHYSIOGRAPHY_SR61_IN is a polygon shapefile that shows the physiographic regions of Indiana. Detailed descriptions of these regions can be obtained...

45.
Predicted Responses of Geologic Materials to Seismically Induced Ground Shaking: Indiana

Predicted Responses of Geologic Materials to Seismically Induced Ground Shaking: Indiana

2011. Indiana Geological Survey. SEISMIC_SHAKING_PREDICTED_RESPONSE_RP35_IN is a polygon shapefile that shows the distribution and classification of National Earthquake Hazards Red...

46.
Quaternary Deposits: Illinois, 1979

Quaternary Deposits: Illinois, 1979

1979. Illinois State Geological Survey. Digital representation of the Quaternary Deposits in Illinois map by Lineback (1979). Map scale is 1:500,000. Shows Quaternary deposits that lie at...

47.
Mixed

Quaternary Deposits: Illinois, 1996

1996. Barb Stiff. This feature dataset is a generalized version of Quaternary Deposits of Illinois. Updated to reflect the areal distribution of the Wedron and Mason...

48.
Seismic Refraction Data for Indiana: Indiana

Seismic Refraction Data for Indiana: Indiana

2002. Indiana Geological Survey. SEISMIC_DATA_IN is a point shapefile created from a shapefile named SEISMIC_DATA, which was derived from a Microsoft Excel spreadsheet named SEISMI...

49.
Shaded Relief map: Illinois, 2006

Shaded Relief map: Illinois, 2006

1995. Abert, Curtis C. This raster dataset shows the landforms of Illinois with a shaded relief portrayal. Cell size is 301 feet and nominal map scale is 1:250,000. The d...

50.
Shrink-Swell Characteristics, Derived from STATSGO: Indiana

Shrink-Swell Characteristics, Derived from STATSGO: Indiana

2002. Indiana Geological Survey. The 1994 State Soil Geographic (STATSGO) database for Indiana, obtained from the U.S. Department of Agriculture (USDA), Natural Resources Conservat...

51.
Silurian Reef Locations (Point): Indiana

Silurian Reef Locations (Point): Indiana

2003. Indiana Geological Survey. SILURIAN_REEF_POINTS_MM54_IN is a point shapefile that shows the locations of Silurian rock reef formations in Indiana. These data include five cat...

52.
Silurian Reef Locations (Polygon): Indiana

Silurian Reef Locations (Polygon): Indiana

2003. Indiana Geological Survey. SILURIAN_REEF_POLYGONS_MM54_IN is a polygon shapefile that shows the general locations of Silurian rock reef bank formations in Indiana. These data...

53.
Sinkhole Areas (an indicator of karst terrain): Illinois, 2004

Sinkhole Areas (an indicator of karst terrain): Illinois, 2004

1992-1997. C. P. Weibel and S. V. Panno. This feature class shows the distribution of areas that contain one or more sinkholes throughout the state of Illinois. Areas that contain sinkhole...

54.
Southern extent of glaciation: Indiana

Southern extent of glaciation: Indiana

2010. Indiana Geological Survey. PRE-WISCONSIN_GLACIAL_LIMIT_IN.shp is a line shapefile that shows the extent of glaciation in Indiana as delineated by mapped glacial deposits of v...

55.
Polygon

Stack-Unit Mapping of Geologic Materials to a Depth of 15 Meters: Illinois, 2004

1995. Illinois State Geological Survey. This is an SDE polygon feature class containing stack-unit map designations for Illinois. The primary source is ISGS Circular 542, Stack-unit Mappi...

56.
Structural Features - Faults: Illinois, 1995

Structural Features - Faults: Illinois, 1995

1995. Illinois State Geological Survey. This is a partial representation of Plate 1 from ISGS Bulletin 100 (1993). Features depicted are limited to well documented, significant faults, fa...

57.
Structural Features: Illinois, 1995

Structural Features: Illinois, 1995

1995. Illinois State Geological Survey. This feature dataset is a representation of Plate 1 from ISGS Bulletin 100 (1993) by W. John Nelson. Features depicted are limited to well document...

58.
Structural Features: Indiana

Structural Features: Indiana

2013. Indiana Geological Survey. STRUCTURAL_FEATURES_IN.SHP is a line shapefile that shows the location of known structural features in Indiana. Attributes include the name of the ...

59.
Structural Features- Line Features (Axial or Flexure) of Anticlines, Synclines and Monoclines: Illinois, 1995

Structural Features- Line Features (Axial or Flexure) of Anticlines, Synclines and Monoclines: Illinois, 1995

1995. Illinois State Geological Survey. This is a partial representation of Plate 1 from ISGS Bulletin 100 (1993). Features depicted are limited to well documented, significant anticlines...

60.
Thickness Ranges of the Danville Coal Member (Dugger Formation, Pennsylvanian) in West-Central Indiana: Indiana

Thickness Ranges of the Danville Coal Member (Dugger Formation, Pennsylvanian) in West-Central Indiana: Indiana

2011. Indiana Geological Survey. In the past a series of reports on coal resources of selected counties in Indiana was published as part of the Special Report series of the Indiana...