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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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Indirect Study of Subducted Oceanic Lithosphere at the Central American
Margin
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| NSF Org |
OCE |
| Latest Amendment Date |
May 6, 2002 |
| Award Number |
0203636 |
| Award Instrument |
Standard Grant |
| Program Manager |
Bilal U. Haq
OCE DIVISION OF OCEAN SCIENCES
GEO DIRECTORATE FOR GEOSCIENCES |
| Start Date |
January 1, 2003 |
| Expires |
December 31, 2004 (Estimated) |
| Expected Total Amount |
$182,166 (Estimated) |
| Investigator |
Peter F. Lonsdale (Principal
Investigator current)
Paterno R. Castillo (Co-Principal
Investigator current) |
| Sponsor |
U of Cal SD Scripps Inst
9500 Gilman Drive
La Jolla, CA 92093 858/534-1293 |
| NSF Program |
1620 MARINE GEOLOGY AND GEOPHYSICS |
| Field Application |
0204000 Oceanography |
| Abstract |
The PIs plan mapping and sampling features on the Cocos and Nazca
plates to provide a basis for inferring the properties of the subducted
Cocos plate under Central America. The basic premise is that the
Nazca plate south of Grijalva was formerly contiguous with Cocos
plate under Nicaragua and parts of Costa Rica and that this fossil
plate boundary could form an important structure in the down-going
slab. Because a small fragment remains unsubducted, the investigators
propose to not only study it, but also it's conjugate off Peru,
where much more remains. At that locality, the structure can be
mapped more thoroughly and the results extrapolated to the subducted
slab beneath Costa Rica. Further, dredging will provide essential
samples to measure the composition of the lithosphere that is beneath
the Central American arc. |
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