2019 Annual Meeting of Japan Association of Mineralogical Sciences (JAMS)
Sep 19 - Sep 23, 2019Kyushu University Ito Campus
2019 Annual Meeting of Japan Association of Mineralogical Sciences (JAMS)
Sep 19 - Sep 23, 2019Kyushu University Ito Campus
[R8P-05]Chemical compositions of metamorphic rocks in the Kanzaki City, Saga Prefecture.
*Tomoharu Miyamoto1(1. Kyushu University)
Keywords:
Basic Schist,Kanzaki-Saga,Western Extension of Renge Belt
Low to medium grade metamorphic rocks were found at the center area of the Kanzaki City. They are composed mainly from basic schist with hornblende and plagioclase. Considering these compositional characteristics, it is considered that the basic schist originated from rocks equivalent to MORB added with alkali elements, or perhaps their original mafic rocks were produced by remelting of subducting MORB with a little crustal assimilation involved in its igneous activity.