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Origin of the volcanic rocks erupted in the eastern Manus Basin: Basaltic andesite-andesite-dacite associations
Ma, Yao1,2; Zeng, Zhigang1,2,3; Chen, Shuai1,3; Yin, Xuebo1; Wang, Xiaoyuan1,3
2017-05-01
发表期刊JOURNAL OF OCEAN UNIVERSITY OF CHINA
卷号16期号:3页码:389-402
文章类型Article
摘要There has been much recent interest in the origin of intermediate lava and several hypotheses are: 1) direct melting of the mantle under water-saturated conditions, 2) partial melting of altered crust, 3) fractional crystallization of parent magma, and 4) magma mixing of mafic magmas with dacitic/rhyolitic magmas. Volcanic rocks series ranging from basaltic andesite to dacite (SiO2 ranges from 53.8 to 63.0 wt.%) from the eastern Manus Basin were detected for major and trace element compositions to understand their origin. Low H2O contents, positive correlations of La-SiO2 and Yb-SiO2, oxygen isotope data and the indistinct change of trace element concentrations in oscillatory zoning of plagioclase phenocrysts rule out the models in which silicic lava results from direct melting of hydrous mantle, partial melting of altered oceanic crust or gabbros, and magma mixing, respectively. Besides, the geochemical data of whole rock and melt inclusions indicate that fractional crystallization plays a dominant role in generating the intermediate lava with subduction features.
关键词Eastern Manus Basin Fractional Crystallization Volcanic Rocks
DOI10.1007/s11802-017-3142-x
收录类别SCI
语种英语
WOS记录号WOS:000400939300004
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文献类型期刊论文
版本出版稿
条目标识符http://ir.qdio.ac.cn/handle/337002/136875
专题海洋地质与环境重点实验室
作者单位1.Chinese Acad Sci, Inst Oceanol, Seafloor Hydrothermal Act Lab, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Mineral Resources, Qingdao 266071, Peoples R China
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Ma, Yao,Zeng, Zhigang,Chen, Shuai,et al. Origin of the volcanic rocks erupted in the eastern Manus Basin: Basaltic andesite-andesite-dacite associations[J]. JOURNAL OF OCEAN UNIVERSITY OF CHINA,2017,16(3):389-402.
APA Ma, Yao,Zeng, Zhigang,Chen, Shuai,Yin, Xuebo,&Wang, Xiaoyuan.(2017).Origin of the volcanic rocks erupted in the eastern Manus Basin: Basaltic andesite-andesite-dacite associations.JOURNAL OF OCEAN UNIVERSITY OF CHINA,16(3),389-402.
MLA Ma, Yao,et al."Origin of the volcanic rocks erupted in the eastern Manus Basin: Basaltic andesite-andesite-dacite associations".JOURNAL OF OCEAN UNIVERSITY OF CHINA 16.3(2017):389-402.
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