Geology Primary Sources
Geological Surveys and Maps
Contains over 145,000 maps, including political, physical, and more.
USGS National Geologic Map Database
OneGeology is an international initiative of the world's geological surveys and geoscience organizations. It provides access to global geoscience data and promotes exchange of knowledge and skills, enabling all potential users to participate.
McCully Web Geological Survey Sites of the Web
AGI's State Geological Surveys Database from USGS data The Geological Surveys Database project is a collaboration between American Geosciences Institute (AGI) and U.S. State Geological Surveys to help increase the discoverability and use of geological survey publications and factsheets. Some publication have links to full text and are available to read online, but not all.
Uses cutting-edge data to identify, map, and evaluate water risks around the world.
Classification, Data, and Statistics
Classification and description of minerals with links and a comprehensive library of images corresponding to each mineral.
This database describes minerals and ores of specific elements; individual, highlighted minerals; a limited number of rocks; and a few, key industrial materials for reference.
The world's largest open database of minerals, rocks, meteorites and the localities they come from.
UC Berkeley Alphabetical Mineral Reference
Mineral Resources Online Spatial Data
Interactive maps and downloadable data for regional and global analysis.
Data and technical reports on volcanic hazards.
Smithsonian Institute Global Volcanism Program
The Volcanoes of the World database is a catalog of Holocene and Pleistocene volcanoes, and eruptions from the past 12,000 years. Includes reports on current eruptions and new volcanic activity.
An interactive online and mobile platform for geological data exploration, integration, and analysis.
USGS Water Data for the Nation
Data advancing knowledge of Earth's frozen regions since 1976.
Images and Videos
Smithsonian Institute Global Volcanism Program --Image Galleries
USGS Media Gallery from the Earth Resource Observation Center (EROS)
Image and video galleries.
Videos about geophysics and earth sciences.
Earth Science World Image Bank
Archival Documents and Texts