Geologic maps of US states

Digital geologic maps of the US states with consistent lithology, age, GIS database structure, and format
Data for the District of Columbia is included with Maryland. Separate geologic maps are available for Alaska, Hawaii, and Puerto Rico.

Interactive maps

OGC Web Services

Downloads for all states

Download link Format Size
USGS_SGMC_Geodatabase.zip File geodatabase 415M
USGS_SGMC_Shapefiles.zip Shapefile 634M
USGS-SGMC.kml KML image 2k

List of geologic units by state or county

Metadata

Downloads for any state

State Shapefile + CSV (Zip) Compressed KML (KMZ)
Alabama AL.zip (25.8M) algeol.kmz (15.1M)
Arkansas AR.zip (5.5M) argeol.kmz (3.4M)
Arizona AZ.zip (7.2M) azgeol.kmz (4.9M)
California CA.zip (23.8M) cageol.kmz (14.0M)
Colorado CO.zip (7.8M) cogeol.kmz (4.7M)
Connecticut CT.zip (3.9M) ctgeol.kmz (2.6M)
Delaware DE.zip (513k) degeol.kmz (198k)
Florida FL.zip (16.7M) flgeol.kmz (8.1M)
Georgia GA.zip (9.4M) gageol.kmz (6.4M)
Iowa IA.zip (21.1M) iageol.kmz (15.0M)
Idaho ID.zip (11.8M) idgeol.kmz (7.1M)
Illinois IL.zip (14.1M) ilgeol.kmz (9.0M)
Indiana IN.zip (2.6M) ingeol.kmz (1.9M)
Kansas KS.zip (12.8M) ksgeol.kmz (8.6M)
Kentucky KY.zip (11.2M) kygeol.kmz (7.4M)
Louisiana LA.zip (6.4M) lageol.kmz (3.8M)
Massachusetts MA.zip (10.9M) mageol.kmz (7.0M)
Maryland MD.zip (3.9M) mdgeol.kmz (2.4M)
Maine ME.zip (2.1M) megeol.kmz (1.2M)
Michigan MI.zip (1.9M) migeol.kmz (958k)
Minnesota MN.zip (23.6M) mngeol.kmz (15.3M)
Missouri MO.zip (42.6M) mogeol.kmz (29.3M)
Mississippi MS.zip (1.3M) msgeol.kmz (990k)
Montana MT.zip (90.5M) mtgeol.kmz (61.9M)
North Carolina NC.zip (4.7M) ncgeol.kmz (3.0M)
North Dakota ND.zip (4.5M) ndgeol.kmz (1.9M)
Nebraska NE.zip (1.9M) negeol.kmz (1.5M)
New Hampshire NH.zip (3.1M) nhgeol.kmz (1.2M)
New Jersey NJ.zip (6.0M) njgeol.kmz (3.7M)
New Mexico NM.zip (16.5M) nmgeol.kmz (11.1M)
Nevada NV.zip (65.9M) nvgeol.kmz (42.0M)
New York NY.zip (11.4M) nygeol.kmz (6.2M)
Ohio OH.zip (19.7M) ohgeol.kmz (13.9M)
Oklahoma OK.zip (16.2M) okgeol.kmz (10.9M)
Oregon OR.zip (14.2M) orgeol.kmz (7.6M)
Pennsylvania PA.zip (44.6M) pageol.kmz (30.3M)
Rhode Island RI.zip (1.5M) rigeol.kmz (844k)
South Carolina SC.zip (3.8M) scgeol.kmz (2.7M)
South Dakota SD.zip (17.4M) sdgeol.kmz (12.5M)
Tennessee TN.zip (60.0M) tngeol.kmz (41.6M)
Texas TX.zip (50.1M) txgeol.kmz (35.6M)
Utah UT.zip (15.0M) utgeol.kmz (8.9M)
Virginia VA.zip (8.2M) vageol.kmz (5.1M)
Vermont VT.zip (22.5M) vtgeol.kmz (16.8M)
Washington WA.zip (5.4M) wageol.kmz (3.5M)
Wisconsin WI.zip (1.2M) wigeol.kmz (791k)
West Virginia WV.zip (17.3M) wvgeol.kmz (12.4M)
Wyoming WY.zip (14.8M) wygeol.kmz (9.5M)

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