Teshima pyroclastics: Onset of characteristic Setouchi magmatism induced by slab melting at 14.8 Ma
Teshima pyroclastics: Onset of characteristic Setouchi magmatism induced by slab melting at 14.8 Ma
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丰岛火山碎屑岩:由 14.8 Ma 板片熔化引起的典型濑户内岩浆活动的开始
DOI:
10.1111/iar.12378
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发表时间:
2020
期刊:
影响因子:
1.5
通讯作者:
Tatsumi Yoshiyuki
中科院分区:
文献类型:
--
作者:
Nakaoka Reina;Kado Soko;Hasegawa Shuichi;Suzuki‐Kamata Keiko;Ishizuka Osamu;Sekimoto Shun;Kawabata Hiroshi;Tatsumi Yoshiyuki
Ar‐Ar ages, and petrographical and geochemical characteristics of pyroclastics and an overlying lava from Teshima Island, southwest Japan are presented. Although previous geological and age data suggested Teshima pyroclastics were products of magmatism > 3 my prior to lava flows of Setouchi volcanic rocks generated in association with southward migration of the southwest Japan arc sliver during opening of the Sea of Japan backarc basin at ~ 15 Ma, the present results led to the conclusion that a sequence of Setouchi volcanism, induced by slab melting and subsequent melt‐mantle reactions, produced both pyroclastics and lava at 14.6–14.8 Ma. This age is oldest among those reported so far and may represent the timing of onset of characteristic Setouchi magmatism immediately posterior to and hence as a result of the mega‐tectonic event including rotation of the southwest Japan arc sliver.
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DOI:
--
发表时间:
2016
期刊:
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--
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2000
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10.5575/geosoc.2017.0003
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DOI:
10.5575/geosoc.116.661
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2010
期刊:
Journal of the Geological Society of Japan
影响因子:
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