Montana geologic map data

A GIS database of geologic units and structural features in Montana, 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:

mtgeol.kml (Uncompressed, 191.3M)

mtgeol.kmz (Compressed, 61.9M)

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
Geological attributes CSV format
Geologic units Shapefile, polygon
Faults Shapefile, arcs
Dikes Shapefile, arcs
Colors for lithology ArcMap Style [Instructions]



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



Raines, G.L. and Johnson, B.R., 1995, Digital representation of the Montana stage geologic map: a contribution to the Interior Columbia River Basin Ecosystem Management Project: U.S. Geological Survey Open-File Report 95-691, 21 p.;

Related topics

Geologic units in Montana