Geologic map of the United States.

United States Earth Science Quick Facts

Want to find out about the official state fossils, rocks, minerals, gems, and highest and lowest elevation of each state in the U.S.? Explore using the links below. Geologic maps of each state as well as places to visit are also provided.

Page last updated: August 29, 2023.

Image above: Glacial cobbles of fossiliferous Silurian dolostone on a beach in Door County, Wisconsin. Photograph by Jonathan R. Hendricks.

Alabama


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Geologic map of Alabama.

Alaska


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Geologic map of Alaska.

Arizona


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Geologic map of Arizona.

Arkansas


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Geologic map of Arkansas with physiographic regions identified.

California


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Geologic map of California.

Colorado


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Geologic map of Colorado.

Connecticut


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Geologic map of Connecticut.

Delaware


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Geologic map of Delaware.

Florida


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Geologic map of Florida.

Georgia


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Geologic map of Georgia with physiographic regions identified.

Hawaii


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Geologic map of Hawaii.

Idaho


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Geologic map of Idaho.

Illinois


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Geologic map of Illinois.

Indiana


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Geologic map of Indiana.

Kansas


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Geologic map of Kansas with physiographic regions identified.

Kentucky


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Geologic map of Kentucky with physiographic regions identified.

Louisiana


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Geologic map of Louisiana with physiographic regions identified.

Maine


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Geologic map of Maine.

Maryland


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Geologic map of Maryland.

Massachusettes


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Geologic map of Massachusetts.

Michigan


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Geologic map of Michigan.

Minnesota


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Geologic map of Minnesota.

Mississippi


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Geologic map of Mississippi with physiographic regions identified.

Missouri


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Geologic map of Missouri with physiographic regions identified.

Montana


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Geologic map of Montana.

Nebraska


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Geologic map of Nebraska.

Nevada


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Geologic map of Nevada.

New Hampshire


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Geologic map of New Hampshire.

New Jersey


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Geologic map of New Jersey.

New Mexico


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Geologic map of New Mexico.

New York


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Geologic map of New York.

North Carolina


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Geologic map of North Carolina with physiographic regions identified.

North Dakota


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Geologic map of North Dakota.

Oklahoma


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Geologic map of Oklahoma with physiographic regions identified.

Oregon


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Geologic map of Oregon.

Pennsylvania


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Geologic map of Pennsylvania.

Rhode Island


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Geologic map of Rhode Island.

South Carolina


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Geologic map of South Carolina, with physiographic regions identified.

South Dakota


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Geologic map of South Dakota.

Tennessee


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Geologic map of Tennessee, with physiographic regions identified.

Vermont


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Geologic map of Vermont.

Texas


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Geologic map of Texas with physiographic regions identified.

Virginia


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Geologic map of Virginia with physiographic regions identified.

Washington


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Geologic map of Washington.

West Virginia


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Geologic map of West Virginia, with physiographic regions identified.

Wisconsin


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Geologic map of Wisconsin.

Wyoming


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Geologic map of Wyoming.