Radiometric ages and Nd-Sr isotopic compositions of granitic rocks from the Ulleungdo volcanic island, South Korea

Kim Kyu Han; Tanaka Tsuyoshi; Nagao Keisuke; Nakamura Toshio; Suzuki Kazuhiro; Sumino Hirochika; Asahara Yoshihiro; Hayashi Takamasa; Okuno Mitsuru; Shiihara Miki; Torii Masayuki; Jeong Chan Ho; Park Jisun; Kim Mi Young

doi:10.14862/geochemproc.52.0.221.0

52th Annual Meeting of the Geochemical Society of Japan

Session ID : 3B17

DOI https://doi.org/10.14862/geochemproc.52.0.221.0

Conference information

Host: The Geochemical Society of Japan

Co-host: The Chemical Society of Japan

rock/crust

Radiometric ages and Nd-Sr isotopic compositions of granitic rocks from the Ulleungdo volcanic island, South Korea

*Kyu Han Kim, Tsuyoshi Tanaka, Keisuke Nagao, Toshio Nakamura, Kazuhiro Suzuki, Hirochika Sumino, Yoshihiro Asahara, Takamasa Hayashi, Mitsuru Okuno, Miki Shiihara, Masayuki Torii, Chan Ho Jeong, Jisun Park, Mi Young Kim

Author information

*Kyu Han Kim
Department of Science Education, Ewha Womans University, Seoul 120-750, South Korea
Tsuyoshi Tanaka
Division of Earth and Environmental Sciences, Nagoya University, Nagoya 464-8602, Japan
Keisuke Nagao
Laboratory for Earthquake Chemistry, Graduate School of Science, University of Tokyo, Tokyo 113-0033, Japan
Toshio Nakamura
Center for Chronological Research, Nagoya University, Nagoya 464-8602, Japan
Kazuhiro Suzuki
Division of Earth and Environmental Sciences, Nagoya University, Nagoya 464-8602, Japan
Hirochika Sumino
Laboratory for Earthquake Chemistry, Graduate School of Science, University of Tokyo, Tokyo 113-0033, Japan
Yoshihiro Asahara
Division of Earth and Environmental Sciences, Nagoya University, Nagoya 464-8602, Japan
Takamasa Hayashi
Division of Earth and Environmental Sciences, Nagoya University, Nagoya 464-8602, Japan
Mitsuru Okuno
Department of Earth System Science, Faculty of Science, Fukuoka University, Fukuoka 814-0180, Japan
Miki Shiihara
Graduate School of Science and Technology, Kumamoto University 860-8555, Japan
Masayuki Torii
Graduate School of Science and Technology, Kumamoto University 860-8555, Japan
Chan Ho Jeong
Department of Geosystem Engineering, The Taejon University 300-716, Korea
Jisun Park
Laboratory for Earthquake Chemistry, Graduate School of Science, University of Tokyo, Tokyo 113-0033, Japan
Mi Young Kim
Department of Science Education, Ewha Womans University, Seoul 120-750, South Korea

Keywords: radiometric ages, granitic rock, Ulleungdo volcanic island, Nd-Sr isotopic compositions

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Abstract

Granitic rock fragments found in the Ulleungdo volcanic island, South Korea, show very young Rb-Sr mineral isochron and K-Ar ages. The granitic rocks suggest that the granitic magma was cogenetically evolved from the Stage 3 Ulleungdo alkali basaltic magma formed at the back arc basin during the opening of the East Sea and Sea of Japan.

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