Connecticut geologic map data

A GIS database of geologic units and structural features in Connecticut, with lithology, age, data structure, and format written and arranged just like the other states.


Show in a web browser window:

Show in Google Earth or other KML viewer:

ctgeol.kml (Uncompressed, 8.1M)

ctgeol.kmz (Compressed, 2.6M)

List geologic units by state or county

Show in your GIS using OGC web services: (WMS, version 1.3.0) (WFS, version 1.1.0)


Content Download Format
Geologic units and attributes SHP + CSV format



Outline - Questions & Answers - Plain text - XML
Legend indicating the meaning of colors on the interactive map



Connecticut Geological and Natural History Survey, DEP, in cooperation with the U.S. Geological Survey, 2000, Bedrock Geology of Connecticut, data format: shapefile, file name: bedrock, downloaded from: on 9/18/2003, scale 1:50,000.

Related topics

Geologic units in Connecticut