The Permian-Triassic Transition in Antarctica: Evaluating the Rates and Variability of Carbon Isotope Fluctuations in Terrestrial Organic Matter
Entry ID: NSF-ANT10-39365

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Summary
Abstract: This project studies the Permian-Triassic extinction event as recorded in sedimentary rocks from the Transantarctic Mountains of Antarctica. Two hundred and fifty million years ago most life on Earth was wiped out in a geologic instant. The cause is a subject of great debate. Researchers have identified a unique stratigraphic section near Shackleton glacier laid down during the extinction event. Organic matter from these deposits will be analyzed by density gradient centrifugation (DGC), which will offer detailed information on the carbon isotope composition. The age of these layers will be precisely dated by U/Pb-zircon-dating of intercalated volcanics. Combined, these results will offer detailed constraints on the timing and duration of carbon isotope excursions during the extinction, and offer insight into the coupling of marine and terrestrial carbon cycles. The broader impacts of this project include graduate and undergraduate student research, K12 outreach and teacher involvement, and societal relevance of the results, since the P/T extinction may have been caused by phenomena such as methane release, which could accompany global warming.

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Link: GET DATA
Description: Original data submitted.


Link: VIEW RELATED INFORMATION
Description: NSF Award Abstract #1039365


Temporal Coverage
Start Date: 2009-08-28
Stop Date: 2012-02-29


Location Keywords
CONTINENT > ANTARCTICA
GEOGRAPHIC REGION > POLAR


Science Keywords
PALEOCLIMATE >LAND RECORDS >ISOTOPES    [Definition]
LAND SURFACE >EROSION/SEDIMENTATION >SEDIMENT CHEMISTRY    [Definition]
SOLID EARTH >ROCKS/MINERALS/CRYSTALS >SEDIMENTARY ROCKS >COAL    [Definition]


ISO Topic Category
GEOSCIENTIFIC 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-ANT10-39365

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
SUSAN RIMMER
Role: INVESTIGATOR
Email: srimmer at siu.edu
Contact Address:
Southern Illinois University at Carbondale
City: Carbondale
Province or State: IL
Postal Code: 62901
Country: US



Creation and Review Dates
DIF Creation Date: 2013-01-30
Last DIF Revision Date: 2013-02-01

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