Mineralogical Institute, Faculty of Science, University of Tokyo
Mineralogical Institute, Faculty of Science, University of Tokyo
Mineralogical Institute, Faculty of Science, University of Tokyo
National Institute of Polar Research
Department of Geoscience, New Mexico Institute of Mining and Technology
抄録(英)
Monoclinic-triclinic inversion and exsolution phenomena in calcic anorthoclase were investigated by means of high temperature X-ray diffraction, X-ray microprobe analysis and analytical transmission electron microscope on natural calcic anorthoclase from Mout Erebus, Antarctica. Mt. Erebus anorthoclase is the most calcic one-phase anorthoclase which was twinned according to the albite-and pericline-laws in the course of monoclinic-triclinic inversion, whose temperature was measured to be 750℃. The occurrence of the one-phase anorthoclase was closely related with the eruption mechanism of Mt. Erebus.
雑誌書誌ID
AA1072335X
雑誌名
Proceedings of the NIPR Symposium on Antarctic Geosciences
MICROSTRUCTURE AND PHASE TRANSITION OF CALCIC ANORTHOCLASE FROM MOUNT EREBUS, ANTARCTICA
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KJ00002368070
(782.62KB)
概要
