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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: High-Resolution Multichannel Seismic Imaging
of Active Tectonics, NW Gulf of California
| MARGINS Focus Area |
Rupturing Continental Lithosphere |
| NSF Org |
OCE |
| Latest Amendment Date |
January 17, 2001 |
| Award Number |
9730790 |
| Award Instrument |
Continuing grant |
| Program Manager |
Bilal U. Haq
OCE DIVISION OF OCEAN SCIENCES
GEO DIRECTORATE FOR GEOSCIENCES |
| Start Date |
January 1, 1999 |
| Expires |
January 31, 2002 (Estimated) |
| Expected Total Amount |
$190,000 (Estimated) |
| Investigator |
Joann M. Stock (Principal
Investigator current) |
| Sponsor |
California Inst of Tech
1201 E California Blvd
Pasadena, CA 91125 |
| NSF Program |
1620 MARINE GEOLOGY AND GEOPHYSICS |
| Field Application |
0204000 Oceanography |
| Abstract |
Funds are provided for a high-resolution multi-channel seismic
survey of tectonically active area in northwestern Gulf of California.
The Gulf of california is one of the very few accessible areas where
the transitional crust from continent to ocean can be studied in
a region of oblique estension. Most models of the region show a
single, simple plate boundary, due to lack of deeper understanding.
Two end-member models are possible: diffuse deformation in a broad
active zone, and localized slip in two separate zones in the northern
Gulf. The key to discriminating between the two models lies in shallow
Gulf of California. The PIs will use the LDEO portable high resolution
MCS system on a Mexican research vessel to obtain seismic reflection
profiles of active tectonics, augmented with sonobuoy refraction
profiles, to image the young faults, transform faults and the spreading
center. Modeling will quantify estimates of kinematics of the current
plate motions and strain partitioning and lead to an understanding
of the organization of the strike-slip and rift segments during
transition from a continental to an oceanic system. |
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