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Mineral Resources On-Line Spatial Data

Illinois geologic map data

A GIS database of geologic units and structural features in Illinois, with lithology, age, data structure, and format written and arranged just like the other states.
Geology of Illinois
[Legend for lithology colors]
Show in a web browser window:
Show in Google Earth or download KML:
Show in your GIS using OGC WMS: [Instructions]
Geological attributes: CSV format
Geologic units: Shapefile, polygon
Faults: Shapefile, arcs
Colors for lithology: ArcMap Style [Instructions]
[Outline] - [Questions & Answers] - [Plain text]
Legend indicating the meaning of colors on the interactive map
USGS Open-File Report 2004-1355
Integrated geologic map databases for the United States; the upper midwest states: Minnesota, Wisconsin, Michigan, Illinois, and Indiana
Detailed report of data standardization procedures
GIS style files:
Methods used to create several styles for lithology or geologic time

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

Geologic units in Illinois

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Page Last modified: 09:45 on 13-Oct-2015