Chemical Diffusion in Multicomponent Anhydrous Silicate     Melts
{'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}
In this project chemical diffusion will be investigated                         experimentally in silicate melts of basaltic composition. The                   flattened and polished ends of capsules containing dissimilar                   materials will be joined by a Pt sleeve and welded shut during                  initial heating by a thread of gold wire wrapped around the join                at the top and bottom of the sleeve.  Diffusion profiles will be                determined after quenching the couple by longitudinal sectioning                and microprobe "linescan" for all eleven major elements.  The data              on numerous "linescans" corresponding to various diffusion times                and initial concentration profiles will be fitted to an                         appropriate multicomponent solution of the diffusion equation.                  The aim of this exercise is to extract the off-diagonal (coupling)              terms of the diffusion matrix for basaltic magmas.  The calibrated              diffusion matrices will be used to resolve certain intriguing                   aspects of crystal growth in magmatic systems ( such as whether                 oscillatory zoning is a natural consequence of the coupling of                  diffusion to the crystal liquid interface and the kinetics of                   interface growth) and to suggest possible melt "species"                        predominant in basaltic systems.
{'FirstName': 'Mark', 'LastName': 'Ghiorso', 'PI_MID_INIT': 'S', 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Mark S Ghiorso', 'EmailAddress': 'ghiorso@ofm-research.org', 'NSF_ID': '000445860', 'StartDate': '06/01/1988', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
{'Name': 'University of Washington', 'CityName': 'SEATTLE', 'ZipCode': '981951016', 'PhoneNumber': '2065434043', 'StreetAddress': '4333 BROOKLYN AVE NE', 'StreetAddress2': None, 'CountryName': 'United States', 'StateName': 'Washington', 'StateCode': 'WA', 'CONGRESSDISTRICT': '07', 'CONGRESS_DISTRICT_ORG': 'WA07', 'ORG_UEI_NUM': 'HD1WMN6945W6', 'ORG_LGL_BUS_NAME': 'UNIVERSITY OF WASHINGTON', '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': '1573', 'Text': 'Petrology and Geochemistry'}
{'url': 'https://www.nsf.gov/awardsearch/download?DownloadFileName=1987&All=true', 'xml': '8720631.xml'}