Mineralogy, Magnetism and Geologic Origin of Fine-Grained   Fe-Ti Oxides in Glassy and Devitrified Rhyolitic Rocks
{'Code': '06030204', 'Directorate': {'Abbreviation': 'GEO', 'LongName': 'Directorate For Geosciences'}, 'Division': {'Abbreviation': 'EAR', 'LongName': 'Division Of Earth Sciences'}}
{'SignBlockName': 'Michael A. Mayhew', 'PO_EMAI': None, 'PO_PHON': None}
The magnetic mineralogy of fine-grained FeTi oxides,   1 um             in size and smaller, in glassy and devitrified rhyolitic rocks                  and the geologic origin of these microcrystals are problems                     whose solution substantively influences any interpretation of                   paleomagnetic data of these rocks.  These data, from ashflow                    tuffs, are routinely applied to structural-tectonic, strati-                    graphic, and paleopole studies.  The PI will conduct a detailed                 magnetic, transmission electron microscopy (TEM) and Mossbauer                  spectroscopic study of ash-flow tuff units from Yucca Mountain,                 Nevada, in conjunction with a study of compositionally similar                  rhyolitic obsidian and phroclastic flows from N. California and                 Oregon, to address this problem.  TEM and Mossbauer methods will                distinguish amongst hematite, magnetite and maghemite.  A                       tentative model for the geologic origin of fine-grained NRM                     carriers, which attributes primary remanence to Fe-Ti oxides                    that precipitated at elevated temperature in quenched glass, and                phenocryst phases will be tested.
{'FirstName': 'Charles', 'LastName': 'Schlinger', 'PI_MID_INIT': 'M', 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Charles M Schlinger', 'EmailAddress': None, 'NSF_ID': '000332313', 'StartDate': '07/01/1987', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
{'Name': 'University of Utah', 'CityName': 'SALT LAKE CITY', 'ZipCode': '841129049', 'PhoneNumber': '8015816903', 'StreetAddress': '201 PRESIDENTS CIR', 'StreetAddress2': None, 'CountryName': 'United States', 'StateName': 'Utah', 'StateCode': 'UT', 'CONGRESSDISTRICT': '01', 'CONGRESS_DISTRICT_ORG': 'UT01', 'ORG_UEI_NUM': 'LL8GLEVH6MG3', 'ORG_LGL_BUS_NAME': 'UNIVERSITY OF UTAH', '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': '1574', 'Text': 'Geophysics'}
{'url': 'https://www.nsf.gov/awardsearch/download?DownloadFileName=1987&All=true', 'xml': '8708004.xml'}