Award Abstract # 0841035
MARGINS: Collaborative Research: Melting of Carbonate-bearing Sediments in Subduction Zones

NSF Org: OCE
Division Of Ocean Sciences
Recipient: WILLIAM MARSH RICE UNIVERSITY
Initial Amendment Date: June 29, 2009
Latest Amendment Date: June 29, 2009
Award Number: 0841035
Award Instrument: Standard Grant
Program Manager: Bilal U. Haq
OCE
 Division Of Ocean Sciences
GEO
 Directorate for Geosciences
Start Date: July 1, 2009
End Date: June 30, 2013 (Estimated)
Total Intended Award Amount: $266,942.00
Total Awarded Amount to Date: $266,942.00
Funds Obligated to Date: FY 2009 = $266,942.00
ARRA Amount: $266,942.00
History of Investigator:
  • Rajdeep Dasgupta (Principal Investigator)
    Rajdeep.Dasgupta@rice.edu
Recipient Sponsored Research Office: William Marsh Rice University
6100 MAIN ST
Houston
TX  US  77005-1827
(713)348-4820
Sponsor Congressional District: 09
Primary Place of Performance: William Marsh Rice University
6100 MAIN ST
Houston
TX  US  77005-1827
Primary Place of Performance
Congressional District:
09
Unique Entity Identifier (UEI): K51LECU1G8N3
Parent UEI:
NSF Program(s): Integrat & Collab Ed & Rsearch
Primary Program Source: 01R00910DB RRA RECOVERY ACT
Program Reference Code(s): 0000, 1620, 6890, OTHR
Program Element Code(s): 769900
Award Agency Code: 4900
Fund Agency Code: 4900
Assistance Listing Number(s): 47.050

ABSTRACT

Dasgupta/Class

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-2).

Fund are provided for conducting high-pressure experiments to investigate the fate of sediments as they are progressively subducted to greater depths. In particular, two major questions are addressed that are relevant to the chief goals of the Subduction Factory initiative of MARGINS: (1) What is the effect of CO2 (in the form of carbonates) on the melting behavior of subducting sediments, and (2) What is the role of carbonated sediment melting on mass transfer and mass balance of major, trace, and volatile elements across the subduction factory?

Broader impacts include support of a new young investigator and a female soft-money researcher (LDEO). It would also support a graduate student at Rice. And also involve undergraduate students in aspects of the research.

PUBLICATIONS PRODUCED AS A RESULT OF THIS RESEARCH

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Dasgupta, R. "Ingassing, storage, and outgassing of terrestrial carbon through geologic time" Reviews in Mineralogy and Geochemistry , v.75 , 2013 , p.183 10.2138/rmg.2013.75.7
Dasgupta, R. and Hirschmann, M. M. "The deep carbon cycle and melting in Earth's interior" Earth and Planetary Science Letters , v.298 , 2010 , p.1 10.1016/j.epsl.2010.06.039
Dasgupta, R., Hirschmann, M. M. "The deep carbon cycle and melting in Earth?s interior" Earth and Planetary Science Letters , v.298 , 2010 , p.1 10.1016/j.epsl.2010.06.039
Duncan, M. S., Dasgupta, R. "CO2 solubility and speciation in rhyolitic, sediment partial melts at 1.5-3.0 GPa ? Implications for carbon flux in subduction zones" Geochimica et Cosmochimica Acta , v.124 , 2014 , p.328 10.1016/j.gca.2013.09.026
Tsuno, K. and Dasgupta, R. "Melting phase relation of nominally anhydrous, carbonated pelitic-eclogite at 2.5-3.0 GPa and deep cycling of sedimentary carbon" Contributions to Mineralogy and Petrology , v.161 , 2011 , p.743 10.1007/s00410-010-0560-9
Tsuno, K. and Dasgupta, R. "The effect of carbonates on near-solidus melting of pelite at 3 GPa: relative efficiency of H2O and CO2 subduction" Earth and Planetary Science Letters , v.319-320 , 2011 , p.185 10.1016/j.epsl.2011.12.007
Tsuno, K., Dasgupta, R. "Melting phase relation of nominally anhydrous, carbonated pelitic-eclogite at 2.5-3.0 GPa and deep cycling of sedimentary carbon" Contributions to Mineralogy and Petrology , v.161 , 2011 , p.743 10.1007/s00410-010-0560-9
Tsuno, K., Dasgupta, R. "The effect of carbonates on near-solidus melting of pelite at 3 GPa: relative efficiency of H2O and CO2 subduction" Earth and Planetary Science Letters , v.319-320 , 2012 , p.185 10.1016/j.epsl.2011.12.007
Tsuno, K., Dasgupta, R., Danielson, L., Righter, K. "Flux of carbonate melt from deeply subducted pelitic sediments ? geophysical and geochemical implications for the source of Central American volcanic arc" Geophysical Research Letters , v.39 , 2012 , p.L16307 10.1029/2012GL052606

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