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Browse MARGINS
Awards in reverse chronological order after start
date (most recent first):
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Collaborative Research: Volatiles (H20 and CO2) in Mariana and Izu
Arc Magmas
| MARGINS Focus Area |
Subduction Factory |
| NSF Org |
OCE |
| Latest Amendment Date |
September 7, 2000 |
| Award Number |
0001821 |
| Award Instrument |
Standard Grant |
| Program Manager |
Bilal U. Haq
OCE DIVISION OF OCEAN SCIENCES
GEO DIRECTORATE FOR GEOSCIENCES |
| Start Date |
September 1, 2000 |
| Expires |
August 31, 2003 (Estimated) |
| Expected Total Amount |
$252140 (Estimated) |
| Investigator |
Timothy L. Grove |
| Sponsor |
MIT
77 Massachusetts Avenue
Cambridge, MA 02139 |
| NSF Program |
1620 MARINE GEOLOGY AND GEOPHYSICS |
| Field Application |
0204000 Oceanography |
| Abstract |
Recommended project is for a study of the volatile flux in the
Izu-Bonin-Mariana (IBM) arc system. Water and CO2 analyses will
be done using the Fourier Transform Infrared Spectrometry (FTIR)
method on glassy inclusions from olivines, laser-ablation, inductively-coupled
plasma mass spectrometry (LA-ICPMS) trace element analysis on these
same inclusions, and also will do experimental phase equilibrium
studies with IBM basalts at pressures ranging from 100-800 megapascals
in water saturated and undersaturated conditions. This work is very
important for understanding mass balances in arc systems, addressing
key unknowns in volatile flux budgets. The samples to be used are
already well characterized. The research will address the relative
role of decompression versus flux melting for these samples, determine
key phase equilibria relationships under hydrous conditions, and
develop melt geohygrometers to estimate water contents in IBM lava
compositions. |
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