Ion Microprobe Investigations of Metamorphic Rocks
{'Code': '06030103', 'Directorate': {'Abbreviation': 'GEO', 'LongName': 'Directorate For Geosciences'}, 'Division': {'Abbreviation': 'EAR', 'LongName': 'Division Of Earth Sciences'}}
{'SignBlockName': 'Jane M. Ernst', 'PO_EMAI': None, 'PO_PHON': None}
It is proposed to use an existing ion microprobe to analyze                well-characterized metamorphic rocks to determine (1) OH-F                      partitioning between coexisting hydrous minerals, (2) trace                     element distributions in quartz as a function of variable pressure              and temperature; and (3) the feasibility of measuring oxygen                    isotope compositions in single mineral grains.  All of these                    projects will help understand the chemical evolution of fluid                   phases and the interaction of fluids and rocks or their                         constituent minerals during metamorphism.
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{'Code': '1572', 'Text': 'Tectonics'}
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