Sites offering information about rocks, minerals, mineral resources, stratigraphy and geologic structure, geologic history, seismicity, earthquake history, geologic features, geologic hazards, gemstones, landforms, fossils, and caves of the region. Government geological surveys specific to Iowa may be suggested here.

• Information limited to one region should be submitted to Regions.
• Information limited to one county should be submitted to Counties.
• Information limited to one town or city should be submitted to Locality.
  

more information (editors only)