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Mineral Resources > Online Spatial Data > Geology > by state

Illinois geologic map data

[Legend for lithology colors]

View:

Show in a web browser window:

http://mrdata.usgs.gov/sgmc/il.html

Show in Google Earth or download KML:

• ilgeol.kml (13.5M bytes)
• ilgeol.kmz (4.8M bytes)

Show in your GIS using OGC WMS:

http://mrdata.usgs.gov/services/il?service=WMS&version=1.1.1&request=GetCapabilities& [Instructions]

or OGC WFS:

http://mrdata.usgs.gov/services/il?service=WFS&version=1.0.0&request=GetCapabilities& [Instructions]

Use lithology_symbology.lyr ArcGIS layer file to symbolize lithology when using WFS

Download:

Geological attributes:	ILcsv.zip	CSV format
Geologic units:	ILgeol_dd.zip	Shapefile, polygon
Faults:	ILfaults_dd.zip	Shapefile, arcs
Colors for lithology:	lith6_2.style	ArcMap Style [Instructions]

Metadata:

[Outline] - [Questions & Answers] - [Plain text]

Legend indicating the meaning of colors on the interactive map

Publication:

USGS Open-File Report 2004-1355

Integrated geologic map databases for the United States; the upper midwest states: Minnesota, Wisconsin, Michigan, Illinois, and Indiana

http://pubs.usgs.gov/of/2004/1355/

Methodology:

Detailed report of data standardization procedures

http://pubs.usgs.gov/of/2004/1355/documents/CONUSdocumentationMW.pdf

GIS style files:

Methods used to create several styles for lithology or geologic time

http://pubs.usgs.gov/of/2005/1314/

Sources:

Willman, H.B., and others, (compilers), 1967, Geologic Map of Illinois: Illinois State Geological Survey, scale= 1:500,000, paper.

Geologic units in Illinois