Japan Geoscience Union Meeting 2024

Presentation information

Print

[J] Poster

O (Public ) » Public

[O-08] Poster presentations by senior high school students

Sun. May 26, 2024 1:45 PM - 3:15 PM Poster Hall (Exhibition Hall 6, Makuhari Messe)

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

1:45 PM - 3:15 PM

[O08-P44] Continuity of Intrusive Rocks in Shichigahama Town from near Urato Katsurashima, Shiogama City to Shichigahama Town

*Ayane Hatayama1, *Meru Takeyama1, Taisei Honda1, Yuuma Sato1, Takeru Murakami1, Riku Aiba1 (1.Miyagi Prefectural Tagajo Highschool)

Keywords:Volcano, Intrusive rock, Trace Elements, Urato, Zao Volcano

The Urato expedition conducted by the Department of Disaster Science takes place in the field at the Urato Islands, Shiogama City, Miyagi Prefecture, Japan. In this study, we focused on the Otsuka and Matsushima Formations, which are distributed on Nonoshima and Sabusawa Islands, because we noticed a black layer in the Otsuka Formation on Katsurashima Island, west of Nonoshima. Based on the results of field observations, we propose a hypothesis for the intrusion environment. In addition, we will examine whether this is the same intrusive rock from the Katsurashima area, as well as the color index based on visual observation and the Zr/Y ratio of trace elements. In addition, we will discuss "the plate depth at the time of magma generation" by comparing the results of whole-rock analysis with those of Zao volcano and other volcanoes.