Regional

Searchable catalog of paper and digital geologic maps, mostly for the U.S. Maps and related data cover: geology, hazards, earth resources, geophysics, geochemistry, geochronology, paleontology, and marine geology.

The Oregon Department of Geology and Mineral Industries. News and information about state geology, gems and minerals, earthquakes and other natural hazards, energy resources, cartography, and related topics.

Internet platform for the exchange of ideas and information about geology, research and exploration in North Africa.

Part of a national system for collection, systematization and presentation of geoscientific data for the needs of diverse users. Includes maps and data on topics including geology, mineral resources, natural hazards, and abandoned mines.

Descriptions and maps of the country's major geologic and tectonic features, with more detailed discussions of the characteristics of specific regions.