NSF Org:	EAR Division Of Earth Sciences
Recipient:	UNIVERSITY OF WASHINGTON
Initial Amendment Date:	January 17, 1992
Latest Amendment Date:	January 17, 1992
Award Number:	9118012
Award Instrument:	Standard Grant
Program Manager:	Roy K. Dokka EAR  Division Of Earth Sciences GEO  Directorate for Geosciences
Start Date:	February 1, 1992
End Date:	July 31, 1994 (Estimated)
Total Intended Award Amount:	$64,935.00
Total Awarded Amount to Date:	$64,935.00
Funds Obligated to Date:	FY 1992 = $64,935.00
History of Investigator:	Bernard Evans (Principal Investigator)
Recipient Sponsored Research Office:	University of Washington 4333 BROOKLYN AVE NE SEATTLE WA  US  98195-1016 (206)543-4043
Sponsor Congressional District:	07
Primary Place of Performance:	DATA NOT AVAILABLE
Primary Place of Performance Congressional District:
Unique Entity Identifier (UEI):	HD1WMN6945W6
Parent UEI:
NSF Program(s):	Tectonics
Primary Program Source:
Program Reference Code(s):
Program Element Code(s):	157200
Award Agency Code:	4900
Fund Agency Code:	4900
Assistance Listing Number(s):	47.050

ABSTRACT

The Kigluaik Mountains in Alaska contain a granulite facies (high-temperature) metamorphic overprint on relatively cool, high pressure, epidote-blueschist rocks. Two competing hypotheses for this juxtaposition are (1) that it represents an extensional metamorphic core complex with a pronounced structural break between the different grade rocks, and (2) that the high temperature meta- morphism formed in response to thermal re-equilibration of thickened crust with no structural break. This study will directly test the second hypothesis by an integrated program of field work, petrology and geochronology. It will also evaluate heat transport mechanisms for the high grade rocks. The results will provide important constraints on the thermal history of deep seated parts of orogens immediately post-collision, and will thus have wide tectonic significance.

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