HR: 1340h
AN: V43B-1572    [Abstracts]
TI: GEOROC - Recent Progress
AU: * Sarbas, B
EM: sarbas@mpch-mainz.mpg.de
AF: Max-Planck-Institut fuer Chemie, Postfach 3060, Mainz, 55020 Germany
AU: Busch, U
EM: busch@mpch-mainz.mpg.de
AF: Max-Planck-Institut fuer Chemie, Postfach 3060, Mainz, 55020 Germany
AU: Kalbskopf, B
EM: berndk@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
AU: Sch„fer, H
EM: hschaef@mpch-mainz.mpg.de
AF: Max-Planck-Institut fuer Chemie, Postfach 3060, Mainz, 55020 Germany
AU: Schramm, B
EM: bschramm@mpch-mainz.mpg.de
AF: Max-Planck-Institut fuer Chemie, Postfach 3060, Mainz, 55020 Germany
AB: Since its introduction about six years ago, the geochemical database GEOROC (http://georoc.mpch-mainz.gwdg.de) of the Max-Planck-Institut fr Chemie in Mainz established itself as a major resource available to the scientific community. In spring 2003, together with the databases NAVDAT and PetDB it has initiated the EarthChem consortium (http://www.earthchem.org/), with the aim to increase the synergy between the three geochemical database efforts. So far, GEOROC provided geochemical data published for volcanic whole rocks, minerals and inclusions from ocean islands, large igneous provinces, convergent margins, and Archean greenstone belts. With the Fall 2005 update, samples from representative rift and intraplate volcanic regions will be added. The database then provides about 200,000 analyses published in 5,000 papers. The web interface 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. In addition to the already existing and very popular precompiled data files based on location or rock type, we have added compilations of mineral and melt inclusion analyses. A further extension of GEOROC with the Fall 2005 update will be a map application developed together with NAVDAT and the Kansas Geological Survey. The results of queries can be interpreted against geography. Maps will be created that distinguish samples by different symbols and/or colors according to chemical criteria. In a further step, this application will allow the selection of samples by drawing polygons on the maps. The implementation of the GEOROC database to an SQL server has improved the performance of the web interface considerably, compared to the former MS Access-based version. The speed of queries as well as the possible size of data downloads increased. In addition, it removed restrictions in the possible number of simultaneous users of the database, an improvement that is essential when considering the constant increase in number of users to currently up to 10,000 per month.
DE: 1000 GEOCHEMISTRY
DE: 1040 Radiogenic isotope geochemistry
DE: 1041 Stable isotope geochemistry (0454, 4870)
DE: 1042 Mineral and crystal chemistry (3620)
DE: 1065 Major and trace element geochemistry
SC: Volcanology, Geochemistry, Petrology [V]
MN: Fall Meeting 2005