Geochemical Studies of Mantle Evolution and Dynamics
{'Code': '06030107', 'Directorate': {'LongName': 'Directorate For Geosciences'}, 'Division': {'LongName': 'Division Of Earth Sciences'}}
{'SignBlockName': 'John L. Snyder'}
This study will focus primarily on the detailed geochemistry of                 the Society Island chain in collaboration with geological,                      geochronological and petrological studies being carried on at                   Oregon State University and in France.  This continuing study                   will determine geochemical variations related to volcanic                       evolution, and will attempt to verify the existance of a                        geographic isotopic pattern suggested by reconnaissance data,                   making it possible to test specific models of plume dynamics and                plume-lithosphere interactions.  A detailed isptopic study of the               island of Tahiti will be completed, and reconassance and xenolith               studies will be conducted on the other islands.                                 Two additional activities will also be pursued.  The first is a                 study of Pb/Ce ratios from Samoa to test whether the Samoan post                erosional source contains a recycled component.  The second will                be an attempt to demonstrate the potential benefits of mass                     spectrometric determination of Th isotope ratios.
{'FirstName': 'William', 'LastName': 'White', 'EmailAddress': 'wmw4@cornell.edu', 'StartDate': '07/01/1987', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
{'Name': 'Cornell University', 'CityName': 'Ithaca', 'ZipCode': '148502820', 'PhoneNumber': '6072555014', 'StreetAddress': '373 Pine Tree Road', 'CountryName': 'United States', 'StateName': 'New York', 'StateCode': 'NY'}
{'Code': '1557', 'Text': 'VOLCANOLOGY & MANTLE GEOCHEMIS'}
{'url': 'https://www.nsf.gov/awardsearch/download?DownloadFileName=1987&All=true', 'xml': '8707484.xml'}