Oxygen Fugacities of Super Mantle Rocks from Thermobarometry
{'Code': '06030107', 'Directorate': {'Abbreviation': 'GEO', 'LongName': 'Directorate For Geosciences'}, 'Division': {'Abbreviation': 'EAR', 'LongName': 'Division Of Earth Sciences'}}
{'SignBlockName': 'John L. Snyder', 'PO_EMAI': None, 'PO_PHON': None}
This project is to determine the extent of heterogeniety in                     upper-mantle oxygen fugacity using a newly calibrated                           thermobarometric method.  This will involve measuring the                       compositions of coexisting olivine, orthopyroxene and spinel from               spinel lherzolites by microprobe and Mossbauer methods.  Spinel                 lherzolite xenoliths have been, and are being, collected from a                 number of different geologic areas and tectonic environments in                 both continental and oceanic plates - British Columbia, Japan,                  Massif Central of France, Southwestern Us., Eastern Australia and               Hawaii.  Abyssal peridotites dredged from fracture zones in the                 Atlantic and Indian Oceans will provide further coverage of                     oceanic lithosphere and facilitate distinction between                          subcontinental and suboceanic mantle with respect to oxygen                     fugacity.  Analysis of samples from areas of recent subduction                  (Japan, British Columbia) will provide tests of the hypothesis                  that the mantle is becoming oxidized through the agency of                      subduction-derived fluids.                                                      Preliminary Mossbauer measurements of garnet and garnet-spinel                  lherzolites indicate that, at pressures above the spinel                        stability field, garnet contains substantial amounts of ferric                  iron.  The thermobarometric method will be extended to the garnet               field by determining Fe3-Al partitioning between coexisting                     spinel and garnet.
{'FirstName': 'Bernard', 'LastName': 'Wood', 'PI_MID_INIT': 'J', 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Bernard J Wood', 'EmailAddress': None, 'NSF_ID': '000460385', 'StartDate': '06/01/1988', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
{'Name': 'Northwestern University', 'CityName': 'EVANSTON', 'ZipCode': '602080001', 'PhoneNumber': '3125037955', 'StreetAddress': '633 CLARK ST', 'StreetAddress2': None, 'CountryName': 'United States', 'StateName': 'Illinois', 'StateCode': 'IL', 'CONGRESSDISTRICT': '09', 'CONGRESS_DISTRICT_ORG': 'IL09', 'ORG_UEI_NUM': 'EXZVPWZBLUE8', 'ORG_LGL_BUS_NAME': 'NORTHWESTERN UNIVERSITY', 'ORG_PRNT_UEI_NUM': None}
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{'Code': '1557', 'Text': 'VOLCANOLOGY & MANTLE GEOCHEMIS'}
{'url': 'https://www.nsf.gov/awardsearch/download?DownloadFileName=1988&All=true', 'xml': '8804063.xml'}