WILLIAM MARSH RICE UNIVERSITY
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.
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| AWARD OVERVIEW |
| Award Number |
0841035 |
Funding Agency |
National Science Foundation |
| Total Award Amount |
$266,942 |
Project Location - City |
Houston |
| Award Date |
06/29/2009 |
Project Location - State |
TX |
| Project Status |
Completed |
Project Location - Zip |
77005-1827
|
| Jobs Reported |
0.00 |
Congressional District |
02 |
| Project Location - Country |
US |
|
|
Recipient Information
(Grants)
| Recipient Information (Grants) |
|
Recipient Name
|
WILLIAM MARSH RICE UNIVERSITY |
| Recipient DUNS Number |
050299031
|
| Recipient Address |
6100 MAIN ST |
| Recipient City |
HOUSTON |
| Recipient State |
Texas |
| Recipient Zip |
77005-1827 |
| Recipient Congressional District |
02 |
| Recipient Country |
USA |
Required to Report Top 5
Highly Compensated Officials |
No |
Projects and Jobs Information
| Projects and Jobs Information |
| Project Title |
MARGINS: Collaborative Research: Melting of Carbonate-bearing Sediments in Subduction Zones |
| Project Status |
Completed |
| Final Project Report Submitted |
Yes |
| Project Activities Description |
Research & Public Policy Analysis |
| Quarterly Activities/Project Description |
We submitted a manuscript on the speciation and solubility of CO2 in a model sediment partial melt as a function of pressure and water content. This study reports experimental data collected at 1300 degree C over a pressure range of 1 to 3 GPa. We demonstrated that CO2 dissolves as both molecular CO2 and carbonates in complex rhyolitic, sediment partial melt and total CO2 solubility increases with increasing depth and water content. Using our data we constrained delta-V of CO2 dissolution reactions and also parameterized our CO2 solubility data as a function of pressure and melt water content. Based on our data and parameterization, we showed that small amount of CO2-saturated sediment partial melt is sufficient to elevate the mantle wedge-CO2 abundance such that the arc flux of CO2 can be reconciled.Secondly, in order to extend our study on CO2 solubility in sediment partial melt as a function of pressure, we are now conducting similar experiments as a function of temperature, at a fixed pressure of 3 GPa. The goal is to constrain the dependence of the CO2 dissolution reactions as a function of temperature or in other words, constraining delta-H of reactions. We are also conducting another set of experiments, at a fixed pressure-temperature but with different sediment partial melt compositions to constrain the range of CO2 solution that may be realized at different subduction zones. We expect to report on these new experiments at the upcoming Goldschmidt conference in Florence, Italy. |
| Jobs Created |
0.00 |
| Description of Jobs Created |
None |
Purchaser Information
(Grants)
| Purchaser Information |
| Contracting Office ID |
Not Reported |
| Contracting Office Name |
Not Available |
| Contracting Office Region |
Not Available |
| TAS Major Program |
49-0101 |
| Award Information |
| Award Date |
06/29/2009 |
| Award Number |
0841035 |
| Order Number |
|
| Award Type |
Grants |
| Funding Agency ID |
49 |
| Funding Agency Name |
National Science Foundation |
| Funding Office Name |
Not Available |
| Awarding Agency ID |
49 |
| Awarding Agency Name |
National Science Foundation |
| Amount of Award |
$266,942 |
| Funds Invoiced/Received |
$266,942 |
| Expenditure Amount |
$266,942 |
| Infrastructure Expenditure Amount |
$0 |
| Infrastructure Purpose and Rationale |
Not Reported |
| Infrastructure Point of Contact Name |
Not Reported |
| Infrastructure Point of Contact Email |
Not Reported |
| Infrastructure Point of Contact Phone |
Not Reported |
| Infrastructure Point of Contact Address |
Not Reported |
| Infrastructure Point of Contact City |
N/A |
| Infrastructure Point of Contact State |
Not Reported |
| Infrastructure Point of Contact Zip |
Not Reported |
Product or Service Information
(Grants)
| Product or Service Information |
| Primary Activity Code |
**K |
| Activity Description |
Research & Public Policy Analysis |
| Sub-Awards Information |
| Sub-awards to Organizations |
0 |
| Sub-award Amounts to Organizations |
$0 |
| Sub-Awards to Individuals |
0 |
| Sub-Award Amounts to Individuals |
$0 |
| Number of Sub-awards less than $25,000/award |
0 |
| Amount of Sub-awards less than $25,000/award |
$0 |
| Number of payments to vendors greater than $25,000 |
0 |
| Total Amount of payments to vendors greater than $25,000/award |
$0 |
| Number of payments to vendors less than $25,000/award |
0 |
| Total Amount of payments to vendors less than $25,000/award |
$0 |
| Location Information |
| Latitude, Longitude |
29º 43' 20",
-95º 24' 21" |
| Congressional District |
02 |
| Address 1 |
6100 Main Street |
| Address 2 |
|
| City |
Houston |
| County |
Harris |
| State |
TX |
| Zip |
77005-1827 |
|
 |