NSF Org:	OCE Division Of Ocean Sciences
Recipient:	UNIVERSITY OF CALIFORNIA SAN DIEGO
Initial Amendment Date:	January 6, 1994
Latest Amendment Date:	November 29, 1994
Award Number:	9314315
Award Instrument:	Continuing Grant
Program Manager:	Bilal U. Haq OCE  Division Of Ocean Sciences GEO  Directorate for Geosciences
Start Date:	December 15, 1993
End Date:	November 30, 1995 (Estimated)
Total Intended Award Amount:	$423,344.00
Total Awarded Amount to Date:	$447,602.00
Funds Obligated to Date:	FY 1994 = $323,478.00 FY 1995 = $124,124.00
History of Investigator:	Jason Phipps Morgan (Principal Investigator) jp369@cornell.edu Alistair Harding (Co-Principal Investigator) John Orcutt (Co-Principal Investigator)
Recipient Sponsored Research Office:	University of California-San Diego Scripps Inst of Oceanography 8622 DISCOVERY WAY # 116 LA JOLLA CA  US  92093-1500 (858)534-1293
Sponsor Congressional District:	50
Primary Place of Performance:	University of California-San Diego Scripps Inst of Oceanography 8622 DISCOVERY WAY # 116 LA JOLLA CA  US  92093-1500
Primary Place of Performance Congressional District:	50
Unique Entity Identifier (UEI):	QJ8HMDK7MRM3
Parent UEI:	QJ8HMDK7MRM3
NSF Program(s):	Marine Geology and Geophysics
Primary Program Source:	app-0194  app-0195
Program Reference Code(s):	0000, OTHR
Program Element Code(s):	162000
Award Agency Code:	4900
Fund Agency Code:	4900
Assistance Listing Number(s):	47.050

ABSTRACT

9314315 Phipps The Australian Antarctic Discordance is a section of mid ocean ridge that is significantly deeper than expected. This project will collect crustal thickness measurements from two neighboring segment in the Discordance has a median valley and a 1 km deeper axial depth than its neighboring Southeast Indian Ridge segment to the east that has an axial high morphology. Questions to be addressed are whether: (1) the Discordance is underlain by thin crust, (2) the Klein & Langmuir correlation of mid ocean ridge depth, crustal thickness, and major element chemistry is valid for the Discordance, (3) the crustal thickness on the adjacent Southeast Indian ridge differs from that in the Discordance, and (4) a magma lens exists under the Southeast Indian Ridge. ***

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