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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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Rifting, Oblique Spreading, and an Extensional Transform Zone (?)
in the Lau Backarc Basin 17'-18.6'S
| MARGINS Focus Area |
Subduction Factory |
| NSF Org |
OCE |
| Latest Amendment Date |
January 7, 2000 |
| Award Number |
9503499 |
| Award Instrument |
Continuing grant |
| Program Manager |
David E. Epp
OCE DIVISION OF OCEAN SCIENCES
GEO DIRECTORATE FOR GEOSCIENCES |
| Start Date |
February 1, 1996 |
| Expires |
January 31, 2001 (Estimated) |
| Expected Total Amount |
$555,054 (Estimated) |
| Investigator |
Brian Taylor (Principal
Investigator current)
Fernando Martinez (Co-Principal Investigator current) |
| Sponsor |
U of Hawaii Manoa
2530 Dole Street
Honolulu, HI 96822 |
| NSF Program |
1620 MARINE GEOLOGY AND GEOPHYSICS |
| Field Application |
0204000 Oceanography
42 Geological Sciences |
| Abstract |
As shown by recent ODP drilling, the early evolution of the Lau
Basin involved rifting of a former volcanic arc. It is not known
why some fast spreading segments are opening obliquely and my represent
a different accretionary process at backarc compared to mid-ocean
ridge spreading A major land-sea seismicity experiment in 1994-95
provided a tomographic image of seismic velocity and attenuation
structure beneath the basin and surrounding areas. This study will
test whether Lau spreading center and Peggy Ridge transform fault
are linked by an extensional transform zone. It will also constrain
dynamic models and provide a regional survey for OBS transect study
of mantle melting process. |
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