2021 Annual Meeting of Japan Association of Mineralogical Sciences (JAMS)

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Oral presentation

S1, S4: Earth materials science related to igneous processes and plate convergence region (Joint Special Session)

Fri. Sep 17, 2021 2:00 PM - 4:45 PM Zoom Session 3

Chairperson:DYUTI PRAKASH SARKAR(Hiroshima Uni.), Morihisa Hamada(Japan Agency for Marine-Earth Science and Technology)

4:15 PM - 4:30 PM

[S1,S4-08] Investigation of the magma evolution process inferred from major and trace element compositions of amphibole

[Presentation award entry]

*Ikuo Okada1, Tomoyuki Shibata1, Masako Yoshikawa1, Hidemi Ishibashi2, Takeshi Sugimoto3, Yasutaka Hayasaka1 (1. Hiroshima Uni. , 2. Shizuoka Uni., 3. Geothermal Engineering Co., Ltd.)

Keywords:amphibole, magma evolution, magma mixing, P-T conditions, Yufu volcano

The chemical and isotopic composition of minerals provides information at some point during the magma evolution to record the physicochemical properties of the equilibrium melt. Recently, research on the relationship between amphibole composition and physicochemical conditions of the melt and the partitioning behavior of trace elements between amphibole and the melt has made dramatic progress. By applying these studies, we tried to systematically obtain the temperature, pressure, and the major and trace element compositions of melt in the time derivative of magma evolution.