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Crustal structure and evolution of the Mariana intra-oceanic island arc
https://nied-repo.bosai.go.jp/records/4842
https://nied-repo.bosai.go.jp/records/4842a1efda30-5d76-4660-aa82-ea272581e0cf
| Item type | researchmap(1) | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 公開日 | 2023-03-30 | |||||||||||||||||
| タイトル | ||||||||||||||||||
| 言語 | en | |||||||||||||||||
| タイトル | Crustal structure and evolution of the Mariana intra-oceanic island arc | |||||||||||||||||
| 言語 | ||||||||||||||||||
| 言語 | eng | |||||||||||||||||
| 著者 |
Narumi Takahashi
× Narumi Takahashi
× Shuichi Kodaira
× Simon L. Klemperer
× Yoshiyuki Tatsumi
× Yoshiyuki Kaneda
× Kiyoshi Suyehiro
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| 抄録 | ||||||||||||||||||
| 内容記述タイプ | Other | |||||||||||||||||
| 内容記述 | A new high-resolution velocity model of the Mariana arc-backarc system obtained from active-source seismic profiling demonstrates velocity variations within the arc middle and lower crusts of intermediate to felsic and mafic compositions. The characteristics of the oceanic-island-arc crust are a middle crust with velocity of similar to 6 km/s, laterally heterogeneous lower crust with velocities of similar to 7 km/s, and unusually low mantle velocities. Petrologic modeling suggests that the volume of the lower crust, composed of restites and olivine cumulates after the extraction of the middle crust, should be significantly larger than is observed, suggesting that a part of the lower crust, especially the cumulates, is seismically a part of the mantle. | |||||||||||||||||
| 言語 | en | |||||||||||||||||
| 書誌情報 |
en : GEOLOGY 巻 35, 号 3, p. 203-206, 発行日 2007-03 |
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| 出版者 | ||||||||||||||||||
| 言語 | en | |||||||||||||||||
| 出版者 | GEOLOGICAL SOC AMER, INC | |||||||||||||||||
| ISSN | ||||||||||||||||||
| 収録物識別子タイプ | ISSN | |||||||||||||||||
| 収録物識別子 | 0091-7613 | |||||||||||||||||
| DOI | ||||||||||||||||||
| 関連識別子 | 10.1130/G23212A.1 | |||||||||||||||||
