Kinetic Studies of Geological Processes
{'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 represents a continuation of research previously                   supported by NSF grant EAR82-18984, involving experimental studies              of the diffusion of oxygen and cations in minerals. Specific                    objectives are to: 1.Measure oxygen diffusion in biotite,                       muscovite, and phlogopite micas, and in magnetite, garnet, and                  clinopyroxene, all under hydrothermal conditions, 2. Complete the               measurements of Rb, Sr, and Pb diffusion in orthoclase, and of the              REE, Nd and Er, in hornblende, and 3. To use the new methods                    developed in (2) to measure the diffusion kinetics of these                     elements in clinopyroxene, garnet, apatite, and plagioclase.  The               results will permit the quantitative assessment of the behavior of              the geochronologically important systems Rb-Sr, Sm-Nd, and U-Th-Pb              in rocks during episodes of heating.  It will also be possible to               set constraints on models of basalt genesis by partial melting in               the mantle.  It is important to know if the basalt magmas were not              in chemical and isotopic equilibrium with their source rocks for                all their constituents.
{'FirstName': 'Bruno', 'LastName': 'Giletti', 'PI_MID_INIT': 'J', 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Bruno J Giletti', 'EmailAddress': 'Bruno_Giletti@brown.edu', 'NSF_ID': '000171700', 'StartDate': '12/01/1987', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
{'Name': 'Brown University', 'CityName': 'PROVIDENCE', 'ZipCode': '029129100', 'PhoneNumber': '4018632777', 'StreetAddress': '1 PROSPECT ST', 'StreetAddress2': None, 'CountryName': 'United States', 'StateName': 'Rhode Island', 'StateCode': 'RI', 'CONGRESSDISTRICT': '01', 'CONGRESS_DISTRICT_ORG': 'RI01', 'ORG_UEI_NUM': 'E3FDXZ6TBHW3', 'ORG_LGL_BUS_NAME': 'BROWN UNIVERSITY', 'ORG_PRNT_UEI_NUM': None}
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[{'Code': '1573', 'Text': 'Petrology and Geochemistry'}, {'Code': '9120', 'Text': 'CROSS-DIRECTORATE PROGRAMS'}]
{'url': 'https://www.nsf.gov/awardsearch/download?DownloadFileName=1987&All=true', 'xml': '8709346.xml'}