Japan Geoscience Union Meeting 2023

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Poster

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[O-06] Poster presentations by senior high school students

Sun. May 21, 2023 1:45 PM - 3:15 PM Poster (Exhibition Hall 8, Makuhari Messe)

convener:Tatsuhiko Hara(International Institute of Seismology and Earthquake Engineering, Building Research Institute), Katsuyoshi Michibayashi(Department of Earth and Planetary Sciences, Nagoya University), Miwa Kuri(Japan Meteorological Agency), Keiko Konya(Japan Agency for Marine-Earth Science and Technology)

On-site poster schedule (2023/5/21 13:45-15:15)

1:45 PM - 3:15 PM

[O06-P23] Research on causes of large orthoclase in the granite of Yakushima

*akira iizuka1 (1. Saitama Prefectural Kasukabe High School)

Keywords:Yakushima, orthoclase


I researched causes of large orthoclase in the granite of Yakushima.
In the Yakushima granite, there exist large orthoclase, some of which exceed 15cm, with an average size of 6cm.
In late July 2022, fieldwork was conducted in Yakushima, and samples were obtained and analyzed using polarizing
microscopy, color indices, and data from previous studies for verification.
I considered causes of the unknown formation process of the large orthoclase.