The Geoscience Library houses 30,000 volumes and subscribes to approximately 500 journals. This collection represents a core collection of the most frequently used and cited earth science journals. The subject scope is broad, including marine biology, physical geography, climatology, and rock mechanics, as well as more traditional areas such as geochemistry, geophysics, and paleomagnetics. Material is shuttled between the Geoscience and Geology Libraries daily to avoid duplication.