Re-Os Isotopic Studies of Crust-Mantle Evolution on 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}
The Re-Os isotope system has unique potential to contribute to                  geochemical studies of the earth because information provided by                this system will be complementary to that currently available                   from other isotope systems and should provide new insight on the                geochemical evolution of the mantle, formation of the core and                  creation of continental crust.  This project will determine an                  accurate Os isotope growth curve for the mantle, estimate the                   crustal residence time of the parents of 3.6 Ga craton core                     rocks, better understand the behavior of Re and Os in igneous                   systems and estimate the Os isotope heterogeneity of the present                mantle.  Techniques will be based on the ongoing work at the                    National Bureau of Standards (NBS) of J. Fassett and DTM Research               Associate R. J. Walker.  Funds will be used primarily to pay                    Walker's salary and to build a chemical facility at DTM for the                 separation of Re and Os.  Initially, analyses will be performed                 by laser resonance ionization mass spectrometry (RIMS) on the                   Fassett-Walker 6" RIMS machine at NBS.  Later, an improved 9"                   mass spectrometer, presently under construction at DTM, will be                 used.
[{'FirstName': 'Steven', 'LastName': 'Shirey', 'PI_MID_INIT': 'B', 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Steven B Shirey', 'EmailAddress': 'sshirey@carnegiescience.edu', 'NSF_ID': '000160064', 'StartDate': '01/15/1988', 'EndDate': None, 'RoleCode': 'Principal Investigator'}, {'FirstName': 'Richard', 'LastName': 'Carlson', 'PI_MID_INIT': 'W', 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Richard W Carlson', 'EmailAddress': 'rcarlson@carnegiescience.edu', 'NSF_ID': '000447016', 'StartDate': '01/15/1988', 'EndDate': None, 'RoleCode': 'Co-Principal Investigator'}]
{'Name': 'Carnegie Institution of Washington', 'CityName': 'WASHINGTON', 'ZipCode': '200151305', 'PhoneNumber': '2023876400', 'StreetAddress': '5241 BROAD BRANCH RD NW', 'StreetAddress2': None, 'CountryName': 'United States', 'StateName': 'District of Columbia', 'StateCode': 'DC', 'CONGRESSDISTRICT': '00', 'CONGRESS_DISTRICT_ORG': 'DC00', 'ORG_UEI_NUM': 'ZQ12LY4L5H39', 'ORG_LGL_BUS_NAME': 'CARNEGIE INSTITUTION OF WASHINGTON', 'ORG_PRNT_UEI_NUM': None}
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{'Code': '1573', 'Text': 'Petrology and Geochemistry'}
{'url': 'https://www.nsf.gov/awardsearch/download?DownloadFileName=1987&All=true', 'xml': '8720712.xml'}