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This site is maintained by the MARGINS Office. Please share your comments and suggestions with us.
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Browse MARGINS
Awards in reverse chronological order after start
date (most recent first):
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Quantification of Metamorphic Decarbonation and CO2 Degassing in Subduction
Zones: Implications to Fluid Fluxes, Volatile Recycling and the Global
Carbon Cycle
| MARGINS Focus Area |
Subduction Factory |
| NSF Org |
OCE |
| Latest Amendment Date |
August 13, 1999 |
| Award Number |
9975231 |
| Award Instrument |
Standard Grant |
| Program Manager |
Bilal U. Haq
OCE DIVISION OF OCEAN SCIENCES
GEO DIRECTORATE FOR GEOSCIENCES |
| Start Date |
August 15, 1999 |
| Expires |
July 31, 2002 (Estimated) |
| Expected Total Amount |
$308,010 (Estimated) |
| Investigator |
Derrill M. Kerrick (Principal
Investigator current)
David H. Eggler (Co-Principal Investigator current) |
| Sponsor |
PA St U University Park
201 Old Main
University Park, PA 16802 |
| NSF Program |
1620 MARINE GEOLOGY AND GEOPHYSICS |
| Field Application |
0204000 Oceanography |
| Abstract |
Funds are provided to develop a fully automated computer program
to calculate high-pressure phase equilibria of carbonate-bearing
lithologies that will enable input complex bulk compositions representative
of subducted lithologies at the subduction zones. Piston cylinder
experimental studies of selected key equilibria will constrain the
computations and reduce errors arising from uncertainties in thermochemical
data and equations of state. This will enable the PIs to track carbon
dioxide expulsion with progressive depth in subducted slabs and
thus track the evolution of carbon dioxide in forearcs, subarcs
and at depths beyond subarcs. Then study will contribute to the
MARGINS program objectives by shedding light on how the volatiles
are balanced across convergent margins and ultimately to the role
of subduction in carbon-dioxide recycling and the global carbon
cycle. |
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