The database GEOROC (Geochemistry of Rocks of the Oceans and Continents) is maintained by the Max Planck Institute for Chemistry in Mainz. The database is a comprehensive collection of published analyses of volcanic rocks and mantle xenoliths. It contains major and trace element concentrations, radiogenic and nonradiogenic isotope ratios as well as analytical ages for whole rocks, glasses, minerals and inclusions. Samples come from 11 different geological settings. Metadata include, among others, geographic location with latitude and longitude, rock class and rock type, alteration grade, analytical method, laboratory, reference materials and references
GEOROC is covered by Thomson Reuters Data Citation Index. GEOROC is covered by SCOPUS. GEOROC is covered by Elsevier Datasearch. GEOROC joined with the databases PetDB and NAVDAT to initiate the EarthChem consortium (http://www.earthchem.org/), with the aim to increase the synergy between the three geochemical database efforts. The recently introduced EarthChem Portal (http://geoportal.kgs.ku.edu/earthchem/jtest/) offers a seamless search across the three databases using reference, location, rock type, chemistry or analysed material as selection criterion.