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Antarctica's Geological History Reflected in Sedimentary Radiogenic Isotopes Entry ID: NSF-ANT05-38580 |
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Summary
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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.
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Link:
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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 |
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Temporal Coverage
| Start Date: 2006-09-15 |
| Stop Date: 2010-08-31 |
Location Keywords
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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
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GEOSCIENTIFIC INFORMATION
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Project
| NSF/OPP >Office of Polar Programs, National Science Foundation [Information] |
Data Set Progress
| COMPLETE |
Data Center
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Data Coordination Center, United States Antarctic Program
[Information]
Data Center URL: http://www.usap-data.org/ Dataset ID: NSF-ANT05-38580
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Personnel
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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 |
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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 |
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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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