The USGS Earthquake Hazards Program has compiled a database of earthquake faults in the United States which are believed to be the sources of earthquakes with magnitudes greater than 6 during the past 1,600,000 years. Detailed descriptions of many of the faults is provided via an online database linked to the fault lines in . . . → Read More: USGS Earthquake Hazards Program
Highly detailed digital geologic maps of the US states (not including Alaska and Hawaii) with consistent descriptions (lithology, age, etc) from state to state. The original geologic data was from various sources and compiled by the USGS into KML format.
Click on a polygon to bring up information about that geologic unit. From . . . → Read More: State Geologic Maps Compilation
The Mineral Resources Data System was compiled by the USGS and describes metallic and nonmetallic mineral resources throughout the world. Included are deposit name, location, commodity, deposit description, geologic characteristics, production, reserves, resources, and references for each location. The dataset includes information on over 300,000 locations throughout the Earth.
These are large files . . . → Read More: World Mineral Resources