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  1. STATEMAP: Surficial Geologic Maps of Nebraska - University of Nebraska

  2. STATEMAP | Geology - University of Nebraska–Lincoln

  3. USGS Mineral Resources On-Line Spatial Data

  4. Geology Related GIS Data - University of Nebraska–Lincoln

  5. Geology of Nebraska - Wikipedia

  6. Data & Maps | NebraskaView | Nebraska

  7. Nebraska geologic map data

  8. National Geologic Map Database - USGS

  9. Nebraska Bedrock Geology

  10. Surficial geologic map of the greater Omaha area, Nebraska and …