[S1-04] Analysis of volatiles in melt inclusions of the Myoko Sekiyama (43 ka) and Kannoki (41 ka) eruptions | 2019 Annual Meeting of Japan Association of Mineralogical Sciences (JAMS)

2019 Annual Meeting of Japan Association of Mineralogical Sciences (JAMS)

Sep 19 - Sep 23, 2019Kyushu University Ito Campus

Back

2019 Annual Meeting of Japan Association of Mineralogical Sciences (JAMS)

Sep 19 - Sep 23, 2019Kyushu University Ito Campus

[S1-04]Analysis of volatiles in melt inclusions of the Myoko Sekiyama (43 ka) and Kannoki (41 ka) eruptions

*Morihisa Hamada¹, Estelle F. Rose-Koga², Kenneth T. Koga², Takayuki Ushikubo¹, Kenji Shimizu¹, Hideo Harada³, Yoshiaki Yamaguchi³(1. JAMSTEC, 2. Laboratoire Magmas et Volcans, 3. Shinshu University)

Download PDF

Keywords:

Myoko volcano,Rear-arc volcano,Melt inclusions,Volatiles,SIMS

We analyzed melt inclusions collected from scoriae of the Myoko Sekiyama (43 ka) and Kannoki (41 ka) eruptions by SIMS. Olivine-hosted basaltic melt inclusions from both eruptions dissolve up to 6 wt.% H₂O. Their H₂O concentration decreases with increasing SiO₂. Halogen concentration in melt inclusions from both eruptions are different, suggesting that the fertility of source mantle and/or amount of supplied slab-derived fluids are different between the two eruptions.

Back