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  1. National Geologic Map Database - USGS

    2 days ago · U.S. Department of the Interior | U.S. Geological Survey Supported by the National Cooperative Geologic Mapping Program Page Contact Information: Personnel Page Last …

  2. Macrostrat

    With over 225 maps from data providers around the world across every scale, Macrostrat is the world's largest homogenized geologic map database.

  3. Geological map - Wikipedia

    A geological map or geologic map is a special-purpose map made to show various geological features. Rock units or geologic strata are shown by color or symbols.

  4. State Geologic Map Compilation

    Apr 23, 2025 · This web map portrays the U.S. Geological Survey's (USGS) State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. The SGMC represents …

  5. State Geologic Maps - Geology (U.S. National Park Service)

    Jun 20, 2024 · The following links will take you to state geologic maps. Most of the maps are posted and maintained by state geologic survey organizations. To learn more about your state …

  6. Cooperative National Geologic Map | NGMDB

    Explore the Cooperative National Geologic Map, a unified view of our Nation's geology, with interactive layers and geologic data.

  7. What is a Geologic Map?

    Geologic maps are uniquely suited to solving problems involving Earth resources, hazards, and environments. Geologic maps represent the distribution of different types of rock and surficial …

  8. MapView (beta) | NGMDB

    Explore, interact, and download geologic maps from the USGS National Geologic Map Database.

  9. The National Geologic Map Database (NGMDB) - USGS.gov

    Apr 15, 2018 · Provides access to more than 100,000 geologic maps and other types of geoscience reports and data published from the early 1800s to the present day, by the USGS, …

  10. Geology - Wikipedia

    Geology is the study of Earth's physical structure, substances, history, and processes shaping its formation and evolution.