Geologic maps of US states

Digital geologic maps of the US states with consistent lithology, age, GIS database structure, and format
A newer version is available at and will replace this version when it is prepared for this system.
Data for the District of Columbia is included with Maryland. Puerto Rico is also available.

Interactive maps


Legend and colors for the lithology
Style file Software Instructions
LegendInteractive maps
lith6_2.styleArcMap StyleInstructions
lithclass.qmlQGIS style fileInstructions