Here you will find geologic data in Geographic Information Systems (GIS) and other formats. Most of the data provided here are in the ESRI ArcGIS 10.0 or 9.3.1 file geodatabase format. If you do not own GIS software that can use the geodatabase, ESRI provides ArcGIS Explorer, free software that is capable of viewing these data. Some of the data are in ESRI shapefile format, which can be used by a wide variety of GIS programs.
Hazards and Environmental Geology
geochronology and rock geochemistry data
Geophysical and subsurface data
Mining and Energy Resource Regulation