The United States Geological Survey has released a new geologic map of the United States that lets you click anywhere in the country to see the rocks, sediments, and geologic units under your feet, along with their age and material type.
The Cooperative National Geological Map was created by combining around 100 state and regional maps into one seamless, nationwide view of U.S. geology. The map uses standard U.S. Geological Survey (USGS) colors and patterns, but you don’t need to know those standards in advance - when you zoom in on the map, a legend automatically appears. This legend automatically updates to explain the colors currently visible in your map view.
The map sidebar allows you to explore different geologic map layers:
- Earth Surface - geology exposed at the surface.
- Quaternary - deposits from the Quaternary Period (youngest geologic materials).
- Pre-Quaternary - older rocks beneath surface deposits.
- Precambrian - very old basement rocks.
This new national geologic map lets you explore both a simplified national view and the original state-level geology. Users can spot big geologic patterns across the country, then zoom in for detailed views from local maps. It offers instant access to America’s geologic story in a way that’s easy and engaging to explore.
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