Estimating the origin and properties of zircons on the Samejima coast in the Enshu Sea

Oki Rikusei; yuto igarashi; hodaka nishigaki; yura suzuki; akito kawashima

Presentation information

[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-P08] Estimating the origin and properties of zircons on the Samejima coast in the Enshu Sea

*Oki Rikusei¹, *yuto igarashi¹, *hodaka nishigaki¹, *yura suzuki¹, *akito kawashima¹ (1.Shizuoka prefectural iwata minami high school)

Keywords:zircon, color, origin

The Samejima Coast of Enshu Sea is characterized by the accumulation of sand with heavy mineral concentrations. We have been investigating the origin and distribution of the main minerals that make up the sand. The purpose of this study was to investigate the origin and properties of zircon, a mineral contained in the sand, and to further the investigation of the sand of Samejima Beach. Zircon collected from Samejima Beach, Shizuoka Prefecture, and southern Nagano Prefecture were classified in terms of shape and color, and the origin and properties of zircon were investigated. As a result, it was found that it is difficult to identify the origin of the zircons by shape classification, and that the zircons from the Samejima Coast are mostly white and colorless. Based on these results, we conclude that the zircons of the Samejima Coast originated from the granites of the Ryoke Belt in the upper reaches of the Tenryu River.