| Title | National Geologic Map Database |
| Publication Type | Database |
| Publisher | United States Geological Survey, Association of American State Geologists |
| Keywords | #BedrockMaps, #SurficialMaps, bedrock geology, geologic maps, map, surficial geology |
| Abstract | 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: http://mrdata.usgs.gov/geology/state/map.html?x=-71.8089194224132&y=42.2562234015901&z=8 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. |
| URL | http://ngmdb.usgs.gov |
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