HR: 1340h
AN: IN23A-0957    [Abstracts]
TI: GEOROC and GeoReM Databases – Linking Chemical Data and Data Quality
AU: * Sarbas, B
EM: sarbas@mpch-mainz.mpg.de
AF: Max-Planck-Institut fuer Chemie, Postfach 3060, Mainz, 55020, Germany
AU: Jochum, K P
EM: kpj@mpch-mainz.mpg.de
AF: Max-Planck-Institut fuer Chemie, Postfach 3060, Mainz, 55020, Germany
AU: Nohl, U
EM: nohl@mpch-mainz.mpg.de
AF: Max-Planck-Institut fuer Chemie, Postfach 3060, Mainz, 55020, Germany
AB: Since its introduction in 1999, the geochemical database GEOROC (Geochemistry of Rocks of the Oceans and Continents, http://georoc.mpch-mainz.gwdg.de) of the Max-Planck-Institut fuer Chemie in Mainz established itself as a major online resource available to the scientific community. GEOROC provides geochemical data published for volcanic whole rocks, glasses, minerals and inclusions from ocean islands, large igneous provinces, convergent margins, Archean greenstone belts, rift and intraplate volcanic regions. The database now provides about 300,000 analyses published in about 6,800 papers (status: 07/2007). The web interface of GEOROC allows the selection of samples by bibliographic, tectonic, geographic, petrological as well as chemical criteria. As part of the bibliographic query, the search for the GEOROC Reference Number permits an easier reproduction of published data plots created with the help of the database. A new query based on age information will be added in the near future. The geochemical database GeoReM (Geological and Environmental Reference Materials, http://georem.mpch- mainz.gwdg.de/) for reference materials and isotopic standards includes reference samples from rock powders, glasses, minerals, isotopic standards, river water, and seawater. GeoReM is a relational database with a structure compatible to that of GEOROC and contains published analytical and compilation data (major and trace element concentrations, radiogenic and stable isotope ratios), important metadata about the analytical values, such as uncertainty, uncertainty type, method and laboratory. Sample information and references are also included. Five different queries are now possible: Samples or materials, GeoReM preferred values, chemical criteria, bibliography, and methods and institutions. GeoReM contains more than 1500 geological reference materials and 14000 analyses (status: 07/2007). References available in both databases are linked to each other. It is now possible to get information through GEOROC about the geochemical analyses of rock samples belonging to analyses of reference materials and isotopic standards compiled in GeoReM. The detailed information of the analytical conditions available in GeoReM enables users of GEOROC to estimate the quality of the analysed rock samples. Vice versa it is possible to go directly from GeoReM to the respective papers in GEOROC to get the analyses of the studied samples. 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.
DE: 1000 GEOCHEMISTRY
DE: 1009 Geochemical modeling (3610, 8410)
DE: 1040 Radiogenic isotope geochemistry
DE: 1065 Major and trace element geochemistry
SC: Earth and Space Science Informatics [IN]
MN: 2007 Fall Meeting