Credits and permissions:
The maps on this page were created by Jonathan R. Hendricks for the Earth@Home project. Unless otherwise indicated, maps were created using QGIS and USGS data from Fenneman and Johnson (1946) and Horton et al. (2017) using the maximum age values for each mapped unit. All maps below have Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International license. You are welcome to use them for any educational purpose.
This page was last updated on August 25, 2022.
Alabama

Geologic map of Alabama with physiographic regions identified.
Alaska

Geologic map of Alaska. Image by Jonathan R. Hendricks for the Earth@Home project developed using QGIS and USGS data (public domain) from Wilson et al. (2015).
Arizona

Geologic map of Arizona with physiographic regions identified.

Geologic and topographic map of Arizona. Geologic data from Horton et al. (2017) using the maximum age values for each mapped unit. Topographic data are derived from the Shuttle Radar Topography Mission (SRTM GL3) Global 90m (SRTM_GL3) (Farr, T. G., and M. Kobrick, 2000, Shuttle Radar Topography Mission produces a wealth of data. Eos Trans. AGU, 81:583-583).
Arkansas

Geologic map of Arkansas with physiographic regions identified.
California

Geologic map of California with physiographic regions identified.
Colorado

Geologic map of Colorado with physiographic regions identified.

Geologic and topographic map of Colorado. Geologic data from Horton et al. (2017) using the maximum age values for each mapped unit. Topographic data are derived from the Shuttle Radar Topography Mission (SRTM GL3) Global 90m (SRTM_GL3) (Farr, T. G., and M. Kobrick, 2000, Shuttle Radar Topography Mission produces a wealth of data. Eos Trans. AGU, 81:583-583).
Florida

Geologic map of Florida with physiographic regions identified.
Georgia

Geologic map of Georgia with physiographic regions identified.
Hawaii

Geologic map of Hawaii. Image by Jonathan R. Hendricks.
Idaho

Geologic map of Idaho with physiographic regions identified.

Geologic and topographic map of Idaho. Geologic data from Horton et al. (2017) using the maximum age values for each mapped unit. Topographic data are derived from the Shuttle Radar Topography Mission (SRTM GL3) Global 90m (SRTM_GL3) (Farr, T. G., and M. Kobrick, 2000, Shuttle Radar Topography Mission produces a wealth of data. Eos Trans. AGU, 81:583-583).
Illinois

Geologic map of Illinois with physiographic regions identified.

Geologic and topographic map of Illinois. Geologic data from Horton et al. (2017) using the maximum age values for each mapped unit. Topographic data are derived from the Shuttle Radar Topography Mission (SRTM GL3) Global 90m (SRTM_GL3) (Farr, T. G., and M. Kobrick, 2000, Shuttle Radar Topography Mission produces a wealth of data. Eos Trans. AGU, 81:583-583).
Indiana

Geologic map of Indiana with physiographic regions identified.

Geologic and topographic map of Indiana. Geologic data from Horton et al. (2017) using the maximum age values for each mapped unit. Topographic data are derived from the Shuttle Radar Topography Mission (SRTM GL3) Global 90m (SRTM_GL3) (Farr, T. G., and M. Kobrick, 2000, Shuttle Radar Topography Mission produces a wealth of data. Eos Trans. AGU, 81:583-583).
Iowa

Geologic map of Iowa with physiographic regions identified.

Geologic and topographic map of Iowa. Geologic data from Horton et al. (2017) using the maximum age values for each mapped unit. Topographic data are derived from the Shuttle Radar Topography Mission (SRTM GL3) Global 90m (SRTM_GL3) (Farr, T. G., and M. Kobrick, 2000, Shuttle Radar Topography Mission produces a wealth of data. Eos Trans. AGU, 81:583-583).
Kansas

Geologic map of Kansas with physiographic regions identified.
Kentucky

Geologic map of Kentucky with physiographic regions identified.
Louisiana

Geologic map of Louisiana with physiographic regions identified.
Minnesota

Geologic map of Minnesota with physiographic regions identified.

Geologic and topographic map of Minnesota. Geologic data from Horton et al. (2017) using the maximum age values for each mapped unit. Topographic data are derived from the Shuttle Radar Topography Mission (SRTM GL3) Global 90m (SRTM_GL3) (Farr, T. G., and M. Kobrick, 2000, Shuttle Radar Topography Mission produces a wealth of data. Eos Trans. AGU, 81:583-583).
Mississippi

Geologic map of Mississippi with physiographic regions identified.
Missouri

Geologic map of Missouri with physiographic regions identified.
Montana

Geologic map of Montana with physiographic regions identified.
Nebraska

Geologic map of Nebraska with physiographic regions identified.
Nevada

Geologic map of Nevada with physiographic regions identified.
New Mexico

Geologic map of New Mexico with physiographic regions identified.

Geologic and topographic map of New Mexico. Geologic data from Horton et al. (2017) using the maximum age values for each mapped unit. Topographic data are derived from the Shuttle Radar Topography Mission (SRTM GL3) Global 90m (SRTM_GL3) (Farr, T. G., and M. Kobrick, 2000, Shuttle Radar Topography Mission produces a wealth of data. Eos Trans. AGU, 81:583-583).
North Carolina

Geologic map of North Carolina with physiographic regions identified.
North Dakota

Geologic map of North Dakota with physiographic regions identified.
Ohio

Geologic map of Ohio with physiographic regions identified.

Geologic and topographic map of Ohio. Geologic data from Horton et al. (2017) using the maximum age values for each mapped unit. Topographic data are derived from the Shuttle Radar Topography Mission (SRTM GL3) Global 90m (SRTM_GL3) (Farr, T. G., and M. Kobrick, 2000, Shuttle Radar Topography Mission produces a wealth of data. Eos Trans. AGU, 81:583-583).
Oklahoma

Geologic map of Oklahoma with physiographic regions identified.
Oregon

Geologic map of Oregon with physiographic regions identified.
South Carolina

Geologic map of South Carolina with physiographic regions identified.
South Dakota

Geologic map of South Dakota with physiographic regions identified.
Tennessee

Geologic map of Tennessee with physiographic regions identified.
Texas

Geologic map of Texas with physiographic regions identified.
Utah

Geologic map of Utah with physiographic regions identified.

Geologic and topographic map of Utah. Geologic data from Horton et al. (2017) using the maximum age values for each mapped unit. Topographic data are derived from the Shuttle Radar Topography Mission (SRTM GL3) Global 90m (SRTM_GL3) (Farr, T. G., and M. Kobrick, 2000, Shuttle Radar Topography Mission produces a wealth of data. Eos Trans. AGU, 81:583-583).
Virginia

Geologic map of Virginia with physiographic regions identified.
Washington

Geologic map of Washington with physiographic regions identified.
West Virginia

Geologic map of West Virginia with physiographic regions identified.
Wisconsin

Geologic map of Wisconsin with physiographic regions identified.

Geologic and topographic map of Wisconsin. Geologic data from Horton et al. (2017) using the maximum age values for each mapped unit. Topographic data are derived from the Shuttle Radar Topography Mission (SRTM GL3) Global 90m (SRTM_GL3) (Farr, T. G., and M. Kobrick, 2000, Shuttle Radar Topography Mission produces a wealth of data. Eos Trans. AGU, 81:583-583).
Wyoming

Geologic map of Wyoming with physiographic regions identified.