Alabama Alaska Arizona Arkansas California Colorado Connecticut Connecticut Delaware Delaware Florida Georgia Hawaii Idaho Illinois Indiana Iowa Kansas Kentucky Louisiana Maine Maryland Maryland Massachusetts Massachusetts Michigan Michigan Minnesota Mississippi Missouri Montana Nebraska Nevada New Hampshire New Hampshire New Jersey New Jersey New Mexico New York North Carolina North Dakota Ohio Oklahoma Oregon Pennsylvania Puerto Rico Rhode Island Rhode Island South Carolina South Dakota Tennessee Texas Utah Vermont Vermont Virgin Islands Virginia Washington West Virginia Wisconsin Wyoming
USGS Visual Identity link to USGS home page
horizontal rule

National Geologic Map Database logo
(or geologic maps that cover the entire U.S. or North America)

Button to link to Help page Button to link to Completion Status page

under construction logo

horizontal rule
Map Area (Help)
(select one or more)
Select any number of states from either the map (JavaScript enabled browser only) or the scrollable list. The currently selected states will be highlighted in the scrollable list. (Help)

US states image map

horizontal rule

Other Search Methods
Easy bar indicating progressive complexity of search options Complex
button link to place name search Inactive state map search button button link to quick search button link to comprehensive search
horizontal rule
button link to NGM home page
Your are welcome.

The National Geologic Map Database is managed by the USGS's National Cooperative Geologic Mapping Program in cooperation with the Association of American State Geologists.

horizontal rule Database project personnel.
Last modified: July 20, 2012

Currently selected
criteria will find