期刊
INTERNATIONAL GEOLOGY REVIEW
卷 59, 期 11, 页码 1439-1450出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/00206814.2016.1276482
关键词
Izu; bonin; boninite; basalt; drilling; International Ocean Discovery Program; Expedition 352; Site U1439; Site U1440; Site U1441; Site U1442; ophiolite; subduction initiation; Philippine plate
类别
资金
- USSSP
- NSF [OCE1558608, OCE1558647, OCE1558689, OCR1558855]
- NERC (UK) [NE/M012034/1]
- NERC [NE/M010643]
- German Research Foundation [KU-2685/4-1]
- German Science Foundation (DFG) [AL 1189/8]
- Austrian Academy of Sciences
- Austrian Science Fund (FWF) [P27982-N29]
- Japan Society for the Promotion of Science [JSPS: 16H06347]
- Japan Drilling Earth Science Consortium
- State Oceanic Administration [GASI-GEOGE-02]
- ANZIC
- Directorate For Geosciences [1558608] Funding Source: National Science Foundation
- Division Of Ocean Sciences [1558689, 1558647] Funding Source: National Science Foundation
- Natural Environment Research Council [NE/M008193/1, NE/M010643/1, NE/M012034/1] Funding Source: researchfish
- NERC [NE/M012034/1, NE/M008193/1, NE/M010643/1] Funding Source: UKRI
- Grants-in-Aid for Scientific Research [16H02742] Funding Source: KAKEN
International Ocean Discovery Program (IODP) Expedition 352 recovered a high-fidelity record of volcanism related to subduction initiation in the Bonin fore-arc. Two sites (U1440 and U1441) located in deep water nearer to the trench recovered basalts and related rocks; two sites (U1439 and U1442) located in shallower water further from the trench recovered boninites and related rocks. Drilling in both areas ended in dolerites inferred to be sheeted intrusive rocks. The basalts apparently erupted immediately after subduction initiation and have compositions similar to those of the most depleted basalts generated by rapid sea-floor spreading at mid-ocean ridges, with little or no slab input. Subsequent melting to generate boninites involved more depleted mantle and hotter and deeper subducted components as subduction progressed and volcanism migrated away from the trench. This volcanic sequence is akin to that recorded by many ophiolites, supporting a direct link between subduction initiation, fore-arc spreading, and ophiolite genesis.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据