HR: 1340h
AN: V43B-1573    [Abstracts]
TI: GeoReM: A new Geochemical Database for Reference Materials and Standards
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
AU: Herwig, K
EM: herwig@mpch-mainz.mpg.de
AF: Max-Planck-Institut fuer Chemie, Postfach 3060, Mainz, 55020 Germany
AU: Lammel, E
EM: lammel@mpch-mainz.mpg.de
AF: Max-Planck-Institut fuer Chemie, Postfach 3060, Mainz, 55020 Germany
AU: Stoll, B
EM: stoll@mpch-mainz.mpg.de
AF: Max-Planck-Institut fuer Chemie, Postfach 3060, Mainz, 55020 Germany
AU: Hofmann, A W
EM: hofmann@mpch-mainz.mpg.de
AF: Max-Planck-Institut fuer Chemie, Postfach 3060, Mainz, 55020 Germany
AB: We have developed a new geochemical database GeoReM (http://georem.mpch-mainz.gwdg.de) for reference materials and standards. Reference samples include amongst others USGS, GSJ, GIT-IWG rock powders, synthetic and natural NIST, USGS, MPI-DING reference glasses, mineral standards (e.g., 91500 zircon), isotope standards (e.g., LaJolla, E&A, NIST SRM 981), river water and seawater. GeoReM complements the GEOROC, NavDAT and PetDB databases. GeoReM is a relational database, which strongly follows the concept of the three EARTHCHEM databases [1]. It contains published analytical and compilation values (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. Three different queries are possible: (1) Sample names or materials, (2) Chemical criteria, and (3) Bibliography. Querying by sample names the database provides ranges of published data for concentrations and isotope ratios. To get more detailed information, all primary data and metadata can be shown and downloaded. It is also possible to query by material type (powder, glass, solution, mineral, gas, metal) and material (e.g., basalt, komatiite, seawater). To query by chemistry, element concentrations and isotope ratios can be selected. As a result, a list of suitable reference materials fulfilling all selected chemical criteria is shown. Now it is possible to choose one or more samples. The database provides tables with all analytical data for these samples or data only for the selected items. Furthermore, the number of analytical data can be reduced by selecting one or more materials, material types and/or methods. Four bibliographic queries are possible, by author or coauthor(s), journal, keywords, and by GeoReM number. The GeoReM number, which unambiguously assigns to the reference, may be useful for citation purposes. GeoReM now (state August 2005) contains more than 650 geological reference materials and standards, 5500 analyses and 550 publications. [1] Lehnert et al. (2000), Geochem. Geophys. Geosyst. 1, 1999GC000026
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