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Petrogenesis of Plutonic Rocks in the Ryukyu Arc, Japan
http://hdl.handle.net/11266/6626
http://hdl.handle.net/11266/662651eeb827-8f09-4daf-8d10-6c987ddc370d
| 名前 / ファイル | ライセンス | アクション |
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07_Kawano_p137-169.pdf (2.8 MB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||||||
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| 公開日 | 2019-05-15 | |||||||||
| タイトル | ||||||||||
| タイトル | Petrogenesis of Plutonic Rocks in the Ryukyu Arc, Japan | |||||||||
| 言語 | en | |||||||||
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| 言語 | eng | |||||||||
| 資源タイプ | ||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_3248 | |||||||||
| 資源タイプ | book part | |||||||||
| アクセス権 | ||||||||||
| アクセス権 | open access | |||||||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||||
| 著者 |
川野, 良信
× 川野, 良信
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| 抄録 | ||||||||||
| 内容記述タイプ | Abstract | |||||||||
| 内容記述 | The Cretaceous to Neogene plutonic rocks are distributed over the eight islands of the Ryukyu Arc, namely Amami-O-shima, Kakeroma-jima, Uke-jima, Tokuno-shima, Okinoerabu-jima, Okinawa-jima, Tonaki-jima, and Ishigaki-jima. These plutonic rocks can be categorized based on their petrological characteristics and active periods into four groups: early Cretaceous (EC), late Cretaceous (LC), Poleogene (PG), and Neogene (NG). The initial Sr isotopic ratio of the PG and NG groups increased, whereas the initial Nd isotopic ratio decreased with increasing aluminum saturation index (ASI), thereby indicating the influence of the upper crustal material. The LC group also exhibits a high initial Sr isotopic ratio, a low initial Nd isotopic ratio, and high ASI, presuming that the source magma reacted with the upper portion of the crustal material. Such reactions with the upper crustal material were observed to have occurred three times between Cretaceous and Neogene, and these events may have been caused by changes in the tectonics of the Ryukyu Arc. |
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| 言語 | en | |||||||||
| 書誌情報 |
en : The Rissho International Journal of Academic Research in Culture and Society 巻 1, p. 137-169, 発行日 2018-03-25 |
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| 著者版フラグ | ||||||||||
| 出版タイプ | VoR | |||||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||
| 出版者 | ||||||||||
| 出版者 | Rissho University | |||||||||
| 言語 | en | |||||||||
