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Geology 101 Maps

US Maps

  • USGS National Geologic Map Database -- Under GEOLOGY choose bedrock and surficial; under Scale Range, do 1:24,000 to 1:100,000. Some maps are online; for paper maps, search the Griffin catalog to see if Owen Library has them.  

Tips and Tricks

  • Use your location map, Google maps, National Park map, etc. to help you find the correct geologic map and locate your area on it.
  • You can try searching by the name of the USGS topographic quadrangle for your area.
  • It may also help to know the name of the county.
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