The High-Pressure Stability of Clinopyroxene
{'Code': '06030107', 'Directorate': {'Abbreviation': 'GEO', 'LongName': 'Directorate For Geosciences'}, 'Division': {'Abbreviation': 'EAR', 'LongName': 'Division Of Earth Sciences'}}
{'SignBlockName': 'Felicia Fauntleroy', 'PO_EMAI': None, 'PO_PHON': None}
This project involves the experimental determination of the                     phase relations of coexisting clinopyroxenes and (majorite)                     garnet at very high pressures (150-250 kbar) and temperatures                   (1300-2200 >C) in the system Na2O-CaO-MgO-Al2O3-SiO2.                           Equilibrium compositions of coexisting C2/c clinopyroxene,                      majorite garnet, and P21/c clinoenstatite will be determined,                   as will the high pressure stability limit of the diopside-                      jadeite-enstatite C2/c clinopyroxene solid solution.  The                       results of these experiments will provide information on the                    phase relations in sodium bearing systems at very high pressures                and temperatures, on the mixing properties of the C2/c                          clinopyroxene solution near its high pressure stability limit,                  on the mixing properties of majorite garnet, and potentially on                 the breakdown products of clinopyroxene (perovskite phases).                    This information will test the feasibility of explaining the                    high seismic velocity gradients in the transition zone of the                   earth's mantle by dissolution of C2/c clinopyroxene in majorite                 garnet, and if confirmed, would place narrow constraints on the                 bulk chemistry of the mantle in the transition zone.
{'FirstName': 'Tibor', 'LastName': 'Gasparik', 'PI_MID_INIT': None, 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Tibor Gasparik', 'EmailAddress': 'gasparik@sbmp04.ess.sunysb.edu', 'NSF_ID': '000234879', 'StartDate': '05/01/1987', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
{'Name': 'SUNY at Stony Brook', 'CityName': 'STONY BROOK', 'ZipCode': '117940001', 'PhoneNumber': '6316329949', 'StreetAddress': 'W5510 FRANKS MELVILLE MEMORIAL L', 'StreetAddress2': None, 'CountryName': 'United States', 'StateName': 'New York', 'StateCode': 'NY', 'CONGRESSDISTRICT': '01', 'CONGRESS_DISTRICT_ORG': 'NY01', 'ORG_UEI_NUM': 'M746VC6XMNH9', 'ORG_LGL_BUS_NAME': 'THE RESEARCH FOUNDATION FOR THE STATE UNIVERSITY OF NEW YORK', 'ORG_PRNT_UEI_NUM': None}
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{'Code': '1573', 'Text': 'Petrology and Geochemistry'}
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