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Home page and main menu for USGS Pacific Coastal and Marine Science Center in California.

Electronic facsimile of one of the founding book of the geological sciences, made available by Electronic Scholarly Publishing

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

Provides access to sample, current and back issues of several online crystallography journals.

Defines many terms related to oil and gas exploration and production. Includes illustrations.

ICS; Stratigraphy; GSSP; International Commission on Stratigraphy

The Heritage Corridor Convention and Visitors Bureau was incorporated in 1984 to service the communities along the Illinois and Michigan Canal.

Comprehensive list of the open-access online Earth Sciences journals published by the Copernicus Group.