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Petrogenesis of basalt from the middle Okinawa Trough: New insights from olivine-hosted melt inclusions
Li, Xiaohui1,2; Zeng, Zhigang1,2,3,4; Wang, Xiaoyuan1,3; Chen, Shuai1; Ma, Yao1; Yang, Huixin1; Zhang, Yuxiang1,2; Chen, Zuxing1,2
2018-11-01
发表期刊GEOLOGICAL JOURNAL
ISSN0072-1050
卷号53期号:6页码:3129-3146
通讯作者Zeng, Zhigang(zgzeng@qdio.ac.cn)
摘要Silicate melt inclusions (SMIs) in basalt from the middle Okinawa Trough are investigated in detail to understand the source geochemical characteristics and petrogenesis of the basalt. The middle Okinawa Trough basalts contain abundant SMIs within olivine phenocrysts. The major element compositions of the SMIs are analysed using an electron microprobe. After correcting for olivine postentrapment crystallization, the major element compositions of the SMIs are more variable in terms of SiO2 (49.7-54.8 wt%) and MgO (5.1-7.2 wt%) than those of the host basalt (SiO2, 52.4 wt%; MgO, 5.7 wt%), which could indicate the existence of more primitive melts than erupted bulk rock. The major element compositions of the SMIs indicate that the SMI-recorded melt evolution process was mainly dominated by the fractional crystallization of olivine. According to laser ablation inductively coupled mass spectrometer analyses, the trace element compositions of the SMIs are similar to those of the host bulk rock and feature obvious enrichment in Pb and large-ion lithophile elements relative to high field strength elements, rare earth elements, and highly negative Nb and Ta anomalies. The low Ce/Pb ratios, high Pb contents, and trace element distribution patterns in the SMIs are related to contributions from subducted sedimentary components in the magma source. Based on the electron microprobe analyses, the chemical composition of the olivine suggests that the lithology of the basalt source may be pyroxenite. The basalts may have been generated by the partial melting of pyroxenite during interactions between mantle-wedge peridotite and Si-rich melts that were released from the subducted slab.
关键词basalt Okinawa Trough pyroxenite source silicate melt inclusions subducted sedimentary components
DOI10.1002/gj.3150
收录类别SCI
语种英语
资助项目National Key Basic Research Program of China[2013CB429700] ; National Natural Science Foundation of China[41325021] ; National Natural Science Foundation of China[41476044] ; National Natural Science Foundation of China[41706052] ; Special Fund for the Global Change and Air-Sea Interaction Project[GASI-GEOGE-02] ; International Partnership Program of Chinese Academy of Sciences[133137KYSB20170003] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA11030302] ; Special Fund for the Taishan Scholar Program of Shandong Province[ts201511061] ; Qingdao National Laboratory for Marine Science and Technology[2015ASTP-0S17] ; Qingdao National Laboratory for Marine Science and Technology[2015ASKJ03] ; Qingdao National Laboratory for Marine Science and Technology[2016ASKJ13] ; Innovative Talent Promotion Program[2012RA2191] ; Science and Technology Development Program of Shandong Province[2013GRC31502] ; National High Level Talent Special Support Program ; CAS/SAFEA International Partnership Program for Creative Research Teams ; Qingdao Collaborative Innovation Center of Marine Science and Technology ; National Key Basic Research Program of China[2013CB429700] ; National Natural Science Foundation of China[41325021] ; National Natural Science Foundation of China[41476044] ; National Natural Science Foundation of China[41706052] ; Special Fund for the Global Change and Air-Sea Interaction Project[GASI-GEOGE-02] ; International Partnership Program of Chinese Academy of Sciences[133137KYSB20170003] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA11030302] ; Special Fund for the Taishan Scholar Program of Shandong Province[ts201511061] ; Qingdao National Laboratory for Marine Science and Technology[2015ASTP-0S17] ; Qingdao National Laboratory for Marine Science and Technology[2015ASKJ03] ; Qingdao National Laboratory for Marine Science and Technology[2016ASKJ13] ; Innovative Talent Promotion Program[2012RA2191] ; Science and Technology Development Program of Shandong Province[2013GRC31502] ; National High Level Talent Special Support Program ; CAS/SAFEA International Partnership Program for Creative Research Teams ; Qingdao Collaborative Innovation Center of Marine Science and Technology
WOS研究方向Geology
WOS类目Geosciences, Multidisciplinary
WOS记录号WOS:000450653800045
出版者WILEY
引用统计
被引频次:8[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.qdio.ac.cn/handle/337002/156187
专题海洋地质与环境重点实验室
通讯作者Zeng, Zhigang
作者单位1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao, Shandong, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
3.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Mineral Resources, Qingdao, Shandong, Peoples R China
4.Qingdao Collaborat Innovat Ctr Marine Sci & Techn, Qingdao, Shandong, Peoples R China
第一作者单位中国科学院海洋研究所
通讯作者单位中国科学院海洋研究所
推荐引用方式
GB/T 7714
Li, Xiaohui,Zeng, Zhigang,Wang, Xiaoyuan,et al. Petrogenesis of basalt from the middle Okinawa Trough: New insights from olivine-hosted melt inclusions[J]. GEOLOGICAL JOURNAL,2018,53(6):3129-3146.
APA Li, Xiaohui.,Zeng, Zhigang.,Wang, Xiaoyuan.,Chen, Shuai.,Ma, Yao.,...&Chen, Zuxing.(2018).Petrogenesis of basalt from the middle Okinawa Trough: New insights from olivine-hosted melt inclusions.GEOLOGICAL JOURNAL,53(6),3129-3146.
MLA Li, Xiaohui,et al."Petrogenesis of basalt from the middle Okinawa Trough: New insights from olivine-hosted melt inclusions".GEOLOGICAL JOURNAL 53.6(2018):3129-3146.
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