GeoRef is an international resource for bibliographic information about geology and
geosciences. It is a comprehensive database of citations established by the American
Geological Institute (AGI) in 1966. The purpose of GeoRef is to facilitate research and
development and to meet the needs of the geoscience community. GeoRef provides access
to over 1.8 million references to articles, books, maps, conference papers, reports, and theses,
covering the geology of North America from 1785 to the present. It includes more than 3,500
journals in 40 languages and references to all publications of the U.S. Geological Survey.