Direct ascent to the surface of asthenospheric magma in a region of convex lithospheric flexure
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- Yuki Sato
- Department of Earth Science, Graduate School of Science, Tohoku University, Sendai, Japan
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- Naoto Hirano
- Department of Earth Science, Graduate School of Science, Tohoku University, Sendai, Japan
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- Shiki Machida
- Research and Development (R&D) Center for Submarine Resources, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokosuka, Japan
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- Junji Yamamoto
- The Hokkaido University Museum, Sapporo, Japan
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- Masao Nakanishi
- Graduate School of Science, Chiba University, Chiba, Japan
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- Teruaki Ishii
- Center for Integrated Research and Education of Natural Hazards, Shizuoka University, Shizuoka, Japan
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- Arashi Taki
- Department of Earth Science, Graduate School of Science, Tohoku University, Sendai, Japan
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- Kazutaka Yasukawa
- Department of Systems Innovation, School of Engineering, The University of Tokyo, Tokyo, Japan
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- Yasuhiro Kato
- Department of Systems Innovation, School of Engineering, The University of Tokyo, Tokyo, Japan
書誌事項
- 公開日
- 2017-09-27
- 資源種別
- journal article
- DOI
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- 10.1080/00206814.2017.1379912
- 公開者
- Informa UK Limited
この論文をさがす
説明
ABSTRACTThe stress field of oceanic lithosphere controls the distribution of submarine petit-spot volcanoes. However, the eruption sites of these petit-spot volcanoes are considered to be limited to concavely flexed regions of lithosphere off the outer rise. Here, we present new data for a recently identified petit-spot lava field on a convexly flexed section of the lithosphere adjacent to the subduction zone offshore of northeast Japan in an area containing more than 80 volcanoes. This area is marked by strongly alkaline lavas that were erupted on the convexly flexed region. As for the concavely flexed region where the petit-spots previously reported, the base of the lithosphere beneath the eruption sites is under extension, whereas the upper part of the lithosphere is under compression. This change in the stress field, from the lower to upper lithosphere, causes ascending dikes to stall in the mid-lithosphere, leading to metasomatic interaction with the surrounding peridotite. The new geochemical data o...
収録刊行物
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- International Geology Review
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International Geology Review 60 (10), 1231-1243, 2017-09-27
Informa UK Limited
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詳細情報 詳細情報について
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- CRID
- 1360004234027477632
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- ISSN
- 19382839
- 00206814
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- 資料種別
- journal article
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- データソース種別
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- Crossref
- KAKEN
- OpenAIRE
