Big Ten Academic Alliance Geospatial Discovery Portal

Big Ten Academic Alliance Geoportal

Search Constraints

You searched for: geology Remove constraint geology Author Illinois State Geological Survey Remove constraint Author: Illinois State Geological Survey Subject Geoscientific Information Remove constraint Subject: Geoscientific Information Data type Polygon Remove constraint Data type: Polygon
Number of results to display per page
View results as:

Search Results

1.
Driftless Areas: Illinois, 2004

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...

2.
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...

3.
Woodfordian Moraines of Illinois, 2004

Woodfordian Moraines of Illinois, 2004

1991. Illinois State Geological Survey. This is an SDE polygon feature class containing named Woodfordian moraines, or Wisconsinan end moraines, of Illinois. Scale is 1:500,000. The prima...