IOCAS-IR  > 海洋地质与环境重点实验室
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
Source PublicationJOURNAL OF OCEAN UNIVERSITY OF CHINA
Volume16Issue:3Pages:389-402
SubtypeArticle
AbstractThere 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.
KeywordEastern Manus Basin Fractional Crystallization Volcanic Rocks
DOI10.1007/s11802-017-3142-x
Indexed BySCI
Language英语
WOS IDWOS:000400939300004
Citation statistics
Document Type期刊论文
Version出版稿
Identifierhttp://ir.qdio.ac.cn/handle/337002/136875
Collection海洋地质与环境重点实验室
Affiliation1.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
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
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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