T43C-1647
The EarthChem Deep Lithosphere Dataset:
Digital Access to Mantle Xenolith Petrological Data
SCIENTIFIC CONTEXT
Establishment of a geologic framework for the USArray
mission of EarthScope largely depends on community
efforts that facilitate the integration of seismic data with
petrologic, gravity, structural, and other geologic data.
In an effort to address the needs of the
GeoFrame/USArray community, EarthChem is
developing the Deep Lithosphere Petrological
Dataset to provide easy access to an integrated,
comprehensive, global set of petrological data
from upper mantle and lower crustal rocks.
The initial focus for EarthChem’s Deep
Lithosphere dataset is xenolith data from
geographic locations identified by GeoFrame as
relevant to the USArray mission.
Xenolith locations currently available in the EarthChem xenoliths
database. Map generated using GeoMapApp software
(www.geomapapp.org)
:
USA geolocations include:
• Kilbourne Hole
DATABASE
CONTENT
• Lunar Crater
• San Carlos Volcanic Field
• Wyoming Craton
• Simcoe Shield Volcano
• Elliot County, KY Diatremes
• Basin and Range
• Colorado Plateau
• Sierra Nevada
Geoframe Focus Areas from Tikoff et al. (EOS June 6,
2006)
• Superior Province
QUERY INTERFACE
Data are compiled in a relational database
that complements the data collections of
NAVDAT, GEOROC, and PetDB, and
which together can be accessed and
downloaded through the EarthChem
Portal.
Query by:
• sample location
• rock type
• mineral
• inclusion
• author
• major oxide
• trace element
• isotopic composition
Sponsored by the National Science Foundation
Total Holdings:
• References: 35
• Samples: 657
Num. of Analyses:
• Whole rock: 10850
• Mineral: 16459
• Glass: 620
• Inclusion: 50
• Leachate: 10
Total data points: 27989
Block, Karin A1, Lehnert, Kerstin A1, Walker, J Douglas2, Fishman, Artem3, McDonough, William F4
1Lamont-Doherty
Earth Observatory, Columbia University 61 Route 9W, Palisades, NY 10964
2Department of Geology, University of Kansas, Lawrence, KS 66045
3Center for International Earth Science Information Network, Columbia University 61 Route 9W, Palisades, NY 10964
4Department of Geology, University of Maryland, College Park, MD 20742
Contact: kblock@ldeo.columbia.edu (845) 365-8393
VIEW AND SELECT DATA
SET QUERY PARAMETERS
P-T MODEL DATA
OBTAIN
REFERENCES
ACCESS DATA
QUALITY
INFORMATION
HOST ROCK
METHODS AND
STANDARDS
DOWNLOAD DATA
HOW CAN THE COMMUNITY HELP?
• Contribute datasets and associated metadata
• Preserve collections by registering samples
(www.geosamples.org)
• Provide accurate geospatial coordinates of xenolith locations
• Make recommendations that will improve the database
• Provide feedback on how the database can be improved
• Tell others!
The EarthChem federation of interoperable databases
(www.earthchem.org) provides cyberinfrastructure in
which large geochemical data collections are assembled
and curated to maximize data usability and accessibility.
www.earthchem.org
Sponsored by the National Science Foundation