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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-related
awards in reverse chronological order after start
date (most recent first):
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Collaborative Research: Studies of Deep-Sourced Mud Volcanism in the
Mariana Forearc: A DSL 120, Jason ROV, and Coring Program
| MARGINS Focus Area |
Subduction Factory |
| NSF Org |
OCE |
| Latest Amendment Date |
August 16, 2000 |
| Award Number |
0002584 |
| Award Instrument |
Standard Grant |
| Program Manager |
James F. Allan
OCE DIVISION OF OCEAN SCIENCES
GEO DIRECTORATE FOR GEOSCIENCES |
| Start Date |
October 1, 2000 |
| Expires |
September 30, 2002 (Estimated) |
| Expected Total Amount |
$397,888 (Estimated) |
| Investigator |
Patricia Fryer (Principal
Investigator current)
Clifford S. Todd (Co-Principal Investigator current)
Michael J. Mottl (Co-Principal Investigator current) |
| Sponsor |
U of Hawaii Manoa
2530 Dole Street
Honolulu, HI 96822 |
| NSF Program |
5720 OCEAN DRILLING PROGRAM |
| Field Application |
0204000 Oceanography |
| Abstract |
Recommended project is for an integrated sampling and survey study
of four serpentine mud seamount volcanoes on the Mariana forearc,
designed to place constraints on the nature of the pressure/temperature
conditions in the subduction decollement zone and in the overlying
mantle wedge. The research will also study mass transfer processes
from the decollement and slab to the overlying mantle at slab depths
of 15-29 km, including dehydration and other fluid-rock reactions
that occur during metamorphic processes. The investigation will
center around analysis of entrained metamorphic fluids and high-pressure,
low-temperature metamorphic rock samples brought up by buoyant mud
upflow in the seamount serpentinite mud. Fluid, mud, and rock samples
will be collected by the remotely-operated vehicle (ROV) Jason,
providing geological control of sample localities. Sample collection
will be set within a framework defined by mapping of the mud volcanoes
by the DSL-120 deep-tow, side-scan sonar. These studies will constrain
key parameters controlling forearc seismicity. *** |
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