Articles | Volume 11, issue 1
https://doi.org/10.5194/se-11-23-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/se-11-23-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
07 Jan 2020
Research article |
| 07 Jan 2020
| 07 Jan 2020
Alkali basalt from the Seifu Seamount in the Sea of Japan: post-spreading magmatism in a back-arc setting
Tomoaki Morishita
CORRESPONDING AUTHOR
Faculty of Geosciences and Civil Engineering, Kanazawa University,
Kanazawa 920-1192, Japan
Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY
10964, USA
Volcanoes and Earth's Interior Research Center, Japan Agency for
Marine-Earth Science and Technology, 2–15 Natsushima, Kanagawa, 237-0061,
Japan
Naoto Hirano
Center for Northeast Asian Studies, Tohoku University, 41 Kawauchi,
Aoba-ku, Sendai 980-8576, Japan
Hirochika Sumino
Graduate School of Arts and Sciences, University of Tokyo, 3-8-1
Komaba, Meguro-ku, Tokyo 153-0041, Japan
Hiroshi Sato
Department of Business Administration, Senshu University, 2-1-1,
Higashimita, Tama-ku, Kawasaki, Kanagawa 214-8580, Japan
Tomoyuki Shibata
Department of Earth and Planetary Systems Science, Graduate School of
Science, Hiroshima University,
1-3-2 Kagamiyama, Higashi-Hiroshima City, Hiroshima 739-8511, Japan
Masako Yoshikawa
Department of Earth and Planetary Systems Science, Graduate School of
Science, Hiroshima University,
1-3-2 Kagamiyama, Higashi-Hiroshima City, Hiroshima 739-8511, Japan
Shoji Arai
School of Natural System, Kanazawa University, Kanazawa 920-1192,
Japan
Rie Nauchi
School of Natural System, Kanazawa University, Kanazawa 920-1192,
Japan
Akihiro Tamura
School of Natural System, Kanazawa University, Kanazawa 920-1192,
Japan
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Cited
11 citations as recorded by crossref.
- Determination of whole-rock trace-element compositions of siliceous rocks using MgO-diluted fused glass and LA–ICP–MS A. Tamura et al. 10.2343/geochemj.GJ22020
- Neotectonics at the SE Continental Margin of the Korean Peninsula: Implications for the Back-Arc Region Behind the SW Japan Arc H. Kim et al. 10.1007/s00024-022-02979-0
- The origin of EMI component in the Shikoku back-arc spreading center, Philippine Sea Plate L. Yuan & Q. Yan 10.1016/j.lithos.2025.108055
- Basaltic cognate enclaves from Dokdo Island as a window for intraplate mafic alkaline OIB magma dynamics in a back-arc basin J. Park et al. 10.1007/s00410-022-01951-4
- Upper mantle scale enrichment of Cenozoic intraplate magmatism in Northeast Asia: He-Sr-Nd-Pb-O isotope geochemistry of the basalts around the Korean peninsula D. Kim et al. 10.1016/j.gr.2024.09.016
- Fault activity on the inner continental shelf of the SE Korean Peninsula associated with back-arc opening and closing in the NW Pacific subduction zone S. Moon et al. 10.1007/s11001-022-09510-z
- Characteristics of crustal structures in the Yamato Basin, sea of Japan, deduced from seismic explorations T. Sato et al. 10.1111/iar.12474
- New Opportunities and Untapped Scientific Potential in the Abyssal Ocean J. Marlow et al. 10.3389/fmars.2021.798943
- Origin of two types of olivine from the Ogi Picritic Dolerite Sill, northeast Japan A. CHIBA et al. 10.2465/jmps.231002
- Formation of hydrothermal ferromanganese oxides in the Daini-Nishi-Yamato Seamount, Sea of Japan: Do they really contain critical-metal particles? K. Azami et al. 10.1016/j.oregeorev.2024.106202
- Tearing of subducted slab－The fundamental cause of intraplate magmatism in the eastern Asia? L. CHEN & Z. ZHOU 10.3724/j.issn.1007-2802.20250005
11 citations as recorded by crossref.
- Determination of whole-rock trace-element compositions of siliceous rocks using MgO-diluted fused glass and LA–ICP–MS A. Tamura et al. 10.2343/geochemj.GJ22020
- Neotectonics at the SE Continental Margin of the Korean Peninsula: Implications for the Back-Arc Region Behind the SW Japan Arc H. Kim et al. 10.1007/s00024-022-02979-0
- The origin of EMI component in the Shikoku back-arc spreading center, Philippine Sea Plate L. Yuan & Q. Yan 10.1016/j.lithos.2025.108055
- Basaltic cognate enclaves from Dokdo Island as a window for intraplate mafic alkaline OIB magma dynamics in a back-arc basin J. Park et al. 10.1007/s00410-022-01951-4
- Upper mantle scale enrichment of Cenozoic intraplate magmatism in Northeast Asia: He-Sr-Nd-Pb-O isotope geochemistry of the basalts around the Korean peninsula D. Kim et al. 10.1016/j.gr.2024.09.016
- Fault activity on the inner continental shelf of the SE Korean Peninsula associated with back-arc opening and closing in the NW Pacific subduction zone S. Moon et al. 10.1007/s11001-022-09510-z
- Characteristics of crustal structures in the Yamato Basin, sea of Japan, deduced from seismic explorations T. Sato et al. 10.1111/iar.12474
- New Opportunities and Untapped Scientific Potential in the Abyssal Ocean J. Marlow et al. 10.3389/fmars.2021.798943
- Origin of two types of olivine from the Ogi Picritic Dolerite Sill, northeast Japan A. CHIBA et al. 10.2465/jmps.231002
- Formation of hydrothermal ferromanganese oxides in the Daini-Nishi-Yamato Seamount, Sea of Japan: Do they really contain critical-metal particles? K. Azami et al. 10.1016/j.oregeorev.2024.106202
- Tearing of subducted slab－The fundamental cause of intraplate magmatism in the eastern Asia? L. CHEN & Z. ZHOU 10.3724/j.issn.1007-2802.20250005
Latest update: 28 Mar 2025
Short summary
We report a peridotite xenolith-bearing basalt dredged from the Seifu Seamount (SSM basalt) in the northeast Tsushima Basin, southwest Sea of Japan, which is one of the western Pacific back-arc basin swarms. An 40Ar / 39Ar plateau age of 8.33 ± 0.15 Ma (2 σ) was obtained for the SSM basalt, indicating that it erupted shortly after the termination of back-arc spreading. The SSM basalt was formed in a post-back-arc extension setting by the low-degree partial melting of an upwelling asthenosphere.
We report a peridotite xenolith-bearing basalt dredged from the Seifu Seamount (SSM basalt) in...
