UMass Sesquicentennial

National Geologic Map Database

TitleNational Geologic Map Database
Publication TypeDatabase
PublisherUnited States Geological Survey, Association of American State Geologists
Keywords#BedrockMaps, #SurficialMaps, bedrock geology, geologic maps, map, surficial geology

This database houses almost all geologic maps produced by the USGS, and links to almost all maps published by state geologic surveys, including the MGS.

Searching by placename is currenty disabled, but an interactive web-map interface to the NGMDB can be found here:

It is also recommended you find the name of the USGS 7.5' topographic quadrangle your town is in by looking at the DEP Hydrogeologic Information Matrix, and searching the database for that. It is also very useful to search the USGS Publication Warehouse as well for the quadrangle you want.

For more info contact: 


The MA Geological Survey
Department of Geosciences
269 Morrill Science Center
University of Massachusetts
611 North Pleasant Street
Amherst, MA 01003-9297

Contact Us

Ph: (413) 545-4814
Fax: (413) 545-1200

stategeologist at geo dot umass dot edu

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