IOCAS-IR  > 海洋地质与环境重点实验室
Different magma sources and evolutions of white and black pumice from the middle Okinawa Trough: Evidence from major, trace elements and Sr-Nd-Pb isotopes
Guo, Kun1,2,3; Shu, Yunchao1,4; Wang, Xiaoyuan1,3; Liu, Qian5; Yin, Xuebo1; Chen, Shuai1; Chen, Zuxing1; Zhang, Guangxu1,3
2019
Source PublicationGEOLOGICAL JOURNAL
ISSN0072-1050
Volume54Issue:1Pages:206-220
Corresponding AuthorGuo, Kun(guokun1016@163.com) ; Wang, Xiaoyuan(wangxiaoyuan@qdio.ac.cn)
AbstractThe Okinawa Trough (OT) is a back-arc, initial marginal sea basin that is located behind the Ryukyu arc-trench system. Pumice, including both white and black pumice, is the most widely distributed magmatic rock in the OT. Here, the major and trace element concentrations and Sr-Nd-Pb isotopic compositions of the white and black pumice from the middle OT (MOT) are presented and combined with previously published elemental data for volcanic rocks from the MOT. Their different magma sources and magmatic evolutions are discussed, and their different magma chamber structures are provided in this paper. These results demonstrate that the white pumice has two magma sources: One was produced by the crystallization-based differentiation of basaltic magma, and the other was produced by the assimilation-fractional crystallization (AFC; with less than 5% contamination) of basaltic magma. The black pumice also includes two magma sources: One is similar to that of the first white pumice, whereas the other was produced by basaltic magma that experienced more than 20% upper crustal contamination. There are two different structure magma chambers for white and black pumice in the MOT crust: The deeper one generated no contaminated pumice, whereas the shallow one generated contaminated black pumice. The contamination of the white pumice (<5%) may have occurred during the eruption of magma on the seafloor, rather than in the magma chamber. Different magma sources and evolutions of white and black pumice imply the complexity of magmatism in the Okinawa Trough.
Keywordback-arc black pumice magma source Okinawa Trough white pumice
DOI10.1002/gj.3170
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[41476044] ; National Natural Science Foundation of China[41306053] ; Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology[MGQNLM-KF201707] ; Shandong Provincial Natural Science Foundation, China[ZR2017PD002]
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000455038100014
PublisherWILEY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/160630
Collection海洋地质与环境重点实验室
Corresponding AuthorGuo, Kun; Wang, Xiaoyuan
Affiliation1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao, Peoples R China
3.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Mineral Resources, Qingdao, Peoples R China
4.Woods Hole Oceanog Inst, NIRVANA Labs, Woods Hole, MA 02543 USA
5.Land & Resources Trading Ctr, Land & Resources Dept Jiangxi Prov, Nanchang, Jiangxi, Peoples R China
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Guo, Kun,Shu, Yunchao,Wang, Xiaoyuan,et al. Different magma sources and evolutions of white and black pumice from the middle Okinawa Trough: Evidence from major, trace elements and Sr-Nd-Pb isotopes[J]. GEOLOGICAL JOURNAL,2019,54(1):206-220.
APA Guo, Kun.,Shu, Yunchao.,Wang, Xiaoyuan.,Liu, Qian.,Yin, Xuebo.,...&Zhang, Guangxu.(2019).Different magma sources and evolutions of white and black pumice from the middle Okinawa Trough: Evidence from major, trace elements and Sr-Nd-Pb isotopes.GEOLOGICAL JOURNAL,54(1),206-220.
MLA Guo, Kun,et al."Different magma sources and evolutions of white and black pumice from the middle Okinawa Trough: Evidence from major, trace elements and Sr-Nd-Pb isotopes".GEOLOGICAL JOURNAL 54.1(2019):206-220.
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