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Full-Text Articles in Physical Sciences and Mathematics
Effective Force Constant Ratios: Iron In Iridium And Rhodium, Dennis Munsterman
Effective Force Constant Ratios: Iron In Iridium And Rhodium, Dennis Munsterman
Dissertations and Theses
Classical methods of analyzing heat capacity data for the characteristic moments of the frequency distribution are applied to iridium and rhodium. Impurity moments are determined from high and low temperature f values. These moments are combined by modern theory to estimate the magnitude of the host-host to host-impurity force constant ratio. Ratios of the various host moments are also examined.
Origin Of Hawaiian Tholeiites: Trace Element Constraints, W. P. Leeman, J. R. Budahn, D. C. Gerlach, Diane R. Smith, B. N. Powell
Origin Of Hawaiian Tholeiites: Trace Element Constraints, W. P. Leeman, J. R. Budahn, D. C. Gerlach, Diane R. Smith, B. N. Powell
Geosciences Faculty Research
We report here geochemical studies of Hawaiian tholeiites and ultramafic xenoliths from Salt Lake Crater, Oahu. We focus attention on tholeiitic basalts that comprise the bulk of Hawaiian volcanoes. When the samples are screened to include only those lying neat the log-MgO (about 7 percent) end of olivine-control lines (Wright, 1971), tholeiites from individual volcanoes are remarkably uniform. On this basis, we show that, for tholeiites from six volcanoes, systematic geochemical differences exist that cannot be attributed to differentiation of these magmas from a common parental magma. Apparently there have been important differences in the processes of magma generation, source …