Antarctica's Geological History Reflected in Sedimentary Radiogenic Isotopes
Entry ID: NSF-ANT05-38580

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Summary
Abstract: This project studies sediment from the ocean floor to understand Antarctica's geologic history. Glacially eroded from the Antarctic continent, these sediments may offer insight into the 99% Antarctica covered by ice. The work's central focus is determining crust formation ages and thermal histories for three key areas of East Antarctica--Prydz Bay, eastern Weddell Sea, and Wilkes Land--through a combination of petrography, bulk sediment geochemistry and radiogenic isotopes, as well as isotope chronology of individual mineral grains. One specific objective is characterizing the composition of the Gamburtsev Mountains through studies of Eocene fluvial sediments from Prydz Bay. In addition to furthering our understanding of the hidden terrains of Antarctica, these terrigenous sediments will also serve as a natural laboratory to evaluate the effects of continental weathering on the Hf/Nd isotope systematics of seawater. An important broader impact of the project is providing exciting research projects for graduate and postdoctoral students using state of the art techniques in geochemistry.

Related URL
Link: GET DATA
Description: Sediment Geochemistry (SedDB) Database
Original data submitted.


Link: VIEW RELATED INFORMATION
Description: NSF Award Abstract #0538580


Geographic Coverage
 N: -60.0 S: -70.0  E: 180.0  W: 60.0

Temporal Coverage
Start Date: 2006-09-15
Stop Date: 2010-08-31


Location Keywords
OCEAN > SOUTHERN OCEAN
CONTINENT > ANTARCTICA
GEOGRAPHIC REGION > POLAR
SOLID EARTH > CRUST


Science Keywords
OCEANS >COASTAL PROCESSES >SEDIMENTATION    [Definition]
OCEANS >MARINE SEDIMENTS >TERRIGENOUS SEDIMENTS    [Definition]
PALEOCLIMATE >OCEAN/LAKE RECORDS >SEDIMENTS    [Definition]


ISO Topic Category
GEOSCIENTIFIC INFORMATION


Project
NSF/OPP >Office of Polar Programs, National Science Foundation    [Information]


Data Set Progress
COMPLETE


Data Center
Data Coordination Center, United States Antarctic Program    [Information]
Data Center URL: http://www.usap-data.org/
Dataset ID: NSF-ANT05-38580

Data Center Personnel
Name: ROBERT A. ARKO
Email: info at usap-data.org
Contact Address:
Lamont-Doherty Earth Observatory
61 Route 9W
City: Palisades
Province or State: NY
Postal Code: 10964
Country: USA


Personnel
SIDNEY R HEMMING
Role: INVESTIGATOR
Phone: 845-365-8417
Fax: 845-365-8155
Email: sidney at ldeo.columbia.edu
Contact Address:
Lamont-Doherty Earth Observatory
61 Rt. 9W
City: Palisades
Province or State: NY
Postal Code: 10964
Country: USA


STEVEN L GOLDSTEIN
Role: INVESTIGATOR
Phone: 845-365-8787
Fax: 845-365-8155
Email: steveg at ldeo.columbia.edu
Contact Address:
Lamont-Doherty Earth Observatory
61 Rt. 9W
City: Palisades
Province or State: NY
Postal Code: 10964
Country: USA


CHRISTINA-MARIA VAN DE FLIERDT
Role: INVESTIGATOR
Email: tina at ldeo.columbia.edu
Contact Address:
Lamont-Doherty Earth Observatory
City: Palisades
Province or State: NY
Postal Code: 10964
Country: USA



Creation and Review Dates
DIF Creation Date: 2010-11-20
Last DIF Revision Date: 2010-11-23

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