Geochemical Evolution of the Earth
{'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 is a continuing project on Pb, Sr and Nd tracer studies of                 carbonatites and alkaline-complex rocks as probes to study the                  geochemical evolution of the Earth's mantle over the past                       3,000,000,000 years.  They now plan to study avariety of specific               rocks; calcites from Finland and Uganda, C and O in                             carbonatites from Uganda, O isotopes from ancient syenites, Hf                  from carbonatites of the Canadian Shield, and Pb, Nd, Sr, O and C               isotopes on carbonatites from the Canary Islands provided by                    LeBas.  There will also be an attempt to obtain carbonatites from               India, China and Greenland.  A new thrust will be a measurement                 of age and isotope patterns of coesite- and almandine-bearing                   rocks from Dora Maira, Italy.  The reasearch will be done in                    collaboration with other workers from Germany, Canada, Italy and                Switzerland.
{'FirstName': 'George', 'LastName': 'Tilton', 'PI_MID_INIT': 'R', 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'George R Tilton', 'EmailAddress': None, 'NSF_ID': '000309414', 'StartDate': '02/15/1989', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
{'Name': 'University of California-Santa Barbara', 'CityName': 'SANTA BARBARA', 'ZipCode': '931060001', 'PhoneNumber': '8058934188', 'StreetAddress': '3227 CHEADLE HALL', 'StreetAddress2': None, 'CountryName': 'United States', 'StateName': 'California', 'StateCode': 'CA', 'CONGRESSDISTRICT': '24', 'CONGRESS_DISTRICT_ORG': 'CA24', 'ORG_UEI_NUM': 'G9QBQDH39DF4', 'ORG_LGL_BUS_NAME': 'UNIVERSITY OF CALIFORNIA, SANTA BARBARA', 'ORG_PRNT_UEI_NUM': None}
{'Name': None, 'CityName': None, 'StateCode': None, 'ZipCode': None, 'StreetAddress': None, 'CountryCode': None, 'CountryName': None, 'StateName': None, 'CountryFlag': None, 'CONGRESSDISTRICT': None, 'CONGRESS_DISTRICT_PERF': '""'}
{'Code': '155700', 'Text': 'VOLCANOLOGY & MANTLE GEOCHEMIS'}
{'url': 'https://www.nsf.gov/awardsearch/download?DownloadFileName=1988&All=true', 'xml': '8817082.xml'}