Geochemical Earth Reference Model (GERM)
Chemical characterization of the Earth, its major reservoirs and the fluxes between them.
Geochemistry of the Earth

This database contains summary data on the geochemistry of all reservoirs in the Earth. All search results are customizable, allowing the user to sort and convert units and to download the data in a format of your choice with one click. This relational database only includes peer-reviewed data.
KD's of Rocks and Minerals

This database contains partition coefficient data for all types of rocks and minerals and for every element. All search results are sortable and may be downloaded in the format of your choice. Both experimental and empirical data are included in this extensive compilation.
  • Snowball et al. 1999
    The mineral magnetic properties of an annually laminated Holocene lake-sediment sequence in northern Sweden
  • Ramrath et al. 1999
    Late Pleistocene climatic variations as recorded in two Italian maar lakes (Lago di Mezzano, Lago Grande di Monticchio)
  • Brandt et al. 1999
    Palaeomagnetism of Holocene and Late Pleistocene sediments from Lago di Mezzano and Lago Grande di Monticchio (Italy): initial results
  • Ali et al. 1999
    Holocene palaeomagnetic secular variation at Lake Biwa, central Japan
  • Channell et al. 2000
    Geomagnetic paleointensity for the last 100 kyr from the sub-antarctic South Atlantic: a tool for inter-hemispheric correlation
  • Zillén et al. 2002
    Calendar year ages of three mid-Holocene tephra layers identified in varved lake sediments in west central Sweden
  • Ojala & Saarinen 2002
    Palaeosecular variation of the Earth's magnetic field during the last 10000 years based on the annually laminated sediment of Lake Nautajärvi, central Finland
  • Expedition MV1203 aims to dredge 40 seamounts along the southwest portion of the Walvis Ridge seamount trail. The Walvis Ridge begins on the African continent and extends to near the mid-Atlantic Ridge. The southwest half of the Walvis Ridge appears to bifurcate into two distinct physical and geochemical trends, the Tristan (northern) and Gough (southern) tracks. The data we collect will assist in improving absolute plate motion models for the African continent, and knowledge of the geochemical evolution of plumes and the regional tectonic setting of the surrounding area. Visit the Expedition Website ...

  • IODP Expedition 330 to the Louisville Seamount Trail will drill four underwater volcanoes off the NE coast of New Zealand. One hypothesis states that these volcanoes formed above a narrow plume of hot mantle rising from a position deep in the Earth's mantle. For decades scientists assumed these mantle plumes remain anchored there for tens of millions years, but there is mounting evidence that mantle plumes wander in a large-scale mantle wind. This expedition aims to establish how much mantle plumes may have moved over the last 80 million years and whether the Louisville hotspot moved coherently with the Hawaii hotspot. Visit the Expedition Website ...

  • As of this week, we have uploaded a significant number of new entries in the Partition Coefficient (Kd) Database. In addition, we have made corrections in the existing database, and made a first step at increasing, and clarifying the search parameters. This upgrade represents (an increase of over 35% in the size of the database) the first step in our new initiative to bring the database up-to-date, and to create a searchable database that will allow users to download full experimental datasets through this system. This compilation now represents information from over 300 papers. Visit the Kd Datatbase ...

  • The Fifth GERM Workshop will be held on May 28-31, 2006 at the Columbia University in Palisades NY. The Science Advisory Committee includes Steve Goldstein, Francis Albarede, Louise Kellog, Roberta Rudnick, Bernard Peucker-Ehrenbrink and Hubert Staudigel. Read more ...

  • There will be three events at the Fall AGU 2004 Meeting that relate to Geochemical Earth Reference Model (GERM) activities. First of all, GERM will sponsor the beer at the VGP reception -- please come, celebrate the VGP awardees and talk to us about our planning of the next GERM meeting at Lamont in 2005! There will also be GERM-related sessions on The Deep Earth Engine: Geophysics and Geochemistry (Union Session U04) and on Cyberinfrastructure in Geochemistry (Special Focus Session SF13). Read more ...

  • The EarthRef Digital Archive (ERDA) invites User Upload of digital files. We recommend that you use this digital archive to store any digital file that does not fit into the structure used by the MagIC Upload Wizard found on the upper left of this page. Typical ERDA file uploads may include field work pictures, animations, video excerpts, custom software, location maps, white reports, workshop volumes, field trip guides, etc. Uploaded files will be immediately available to all users of the website. Start a new ERDA file upload ...

  • The basic design of the website has been updated based on feedback from many of its users. Currently, we are about to finish the Second Phase of this Redesign Project, in which we have improved the functionality and information displayed on the home pages for, GERM, MagIC and ERESE. Each of these web sites will function as the Web Portal for its corresponding database, while taking advantage of the infra-structure provided by the umbrella web site and database. Please check back with us on a regular basis to see how the design evolves over the next few months. We would appreciate your comments or suggestions through the Feedback form.

  • respects the privacy of all its collaborators, contributors, users of its services, and visitors to its website. Several functions and services or require the user to supply Identification and Address Information, specifically e-mail address, postal address of the home institution and/or business telephone numbers. This information is used exclusively for documentation and attribution via metadata, except for contributors of data or other materials displayed on The identification of contributors and their addresses is an integral part of Scholarly Data Archiving and this information is continuously updated in the address register by the users themselves. does not distribute address information to third parties. Read Entire Disclaimer ...