Combined Petrologic, 40Ar/39Ar, and Fluid Inclusion Study ofan Inverted Metamorphic Sequence, Maclaren Metamorphic Belt,Alaska
{'Code': '06030103', 'Directorate': {'Abbreviation': 'GEO', 'LongName': 'Directorate For Geosciences'}, 'Division': {'Abbreviation': 'EAR', 'LongName': 'Division Of Earth Sciences'}}
{'SignBlockName': 'Jane M. Ernst', 'PO_EMAI': None, 'PO_PHON': None}
Continued field and lab studies of the Maclaren metamorphic                belt are proposed to determine the thermal and tectonic history                 of these rocks, which occur in a suture zone between accreted                   terranes in South-central Alaska.  The belt is an example of                    inverted metamorphic rocks which grade upward in temperature.                   Syntectonic tonalite sills are associated with the higher grade                 rocks but the thermal gradient is interpreted as being caused by                thrusting of hot, deeper crust rocks over a thick sediment package              during continent - continent collision.  They are exposed by                    subsequent uplift and erosion.  The aim of the research is to                   determine P-T history from which magnitude of uplift can be                     estimated.  Ar-Ar geochronology will be used to estimate uplift                 rates.  These results will be used to interpret the tectonic                    history and causes for heating.
[{'FirstName': 'Tullis', 'LastName': 'Onstott', 'PI_MID_INIT': 'C', 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Tullis C Onstott', 'EmailAddress': 'tullis@princeton.edu', 'NSF_ID': '000426578', 'StartDate': '08/01/1988', 'EndDate': None, 'RoleCode': 'Co-Principal Investigator'}, {'FirstName': 'Lincoln', 'LastName': 'Hollister', 'PI_MID_INIT': 'S', 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Lincoln S Hollister', 'EmailAddress': 'linc@princeton.edu', 'NSF_ID': '000448546', 'StartDate': '08/01/1988', 'EndDate': None, 'RoleCode': 'Principal Investigator'}]
{'Name': 'Princeton University', 'CityName': 'PRINCETON', 'ZipCode': '085442001', 'PhoneNumber': '6092583090', 'StreetAddress': '1 NASSAU HALL', 'StreetAddress2': None, 'CountryName': 'United States', 'StateName': 'New Jersey', 'StateCode': 'NJ', 'CONGRESSDISTRICT': '12', 'CONGRESS_DISTRICT_ORG': 'NJ12', 'ORG_UEI_NUM': 'NJ1YPQXQG7U5', 'ORG_LGL_BUS_NAME': 'THE TRUSTEES OF PRINCETON UNIVERSITY', 'ORG_PRNT_UEI_NUM': None}
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{'Code': '1572', 'Text': 'Tectonics'}
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