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  4. 中国科学院地球与行星物理重点实验室
Deep carbon cycles constrained by a large-scale mantle Mg isotope anomaly in eastern China

文献类型：期刊论文

作者Li, Shu-Guang1,2; Yang, Wei3; Ke, Shan1; Meng, Xunan1; Tian, Hengci3; Xu, Lijuan1; He, Yongsheng1; Huang, Jian2; Wang, Xuan-Ce4; Xia, Qunke5
刊名NATIONAL SCIENCE REVIEW
出版日期2017
卷号4期号:1页码:111-120
ISSN号2095-5138
关键词Mg Isotopes Deep Carbon Cycling Continental Basalts Eastern China Circum-pacific Subduction Zones Mantle Geochemistry
DOI10.1093/nsr/nww070
文献子类Article
英文摘要Although deep carbon recycling plays an important role in the atmospheric CO2 budget and climate changes through geological time, the precise mechanisms remain poorly understood. Since recycled sedimentary carbonate through plate subduction is the main light-delta Mg-26 reservoir within deep-Earth, Mg isotope variation in mantle-derived melts provides a novel perspective when investigating deep carbon cycling. Here, we show that the Late Cretaceous and Cenozoic continental basalts from 13 regions covering the whole of eastern China have low delta Mg-26 isotopic compositions, while the Early Cretaceous basalts from the same area and the island arc basalts from circum-Pacific subduction zones have mantle-like or heavy Mg isotopic characteristics. Thus, a large-scalemantle low delta Mg-26 anomaly in eastern China has been delineated, suggesting the contribution of sedimentary carbonates recycled into the upper mantle, but limited into the lower mantle. This large-scale spatial and temporal variation ofMg isotopes in the mantle places severe constraints on deep carbon recycling via oceanic subduction.
WOS关键词NORTH CHINA ; SUBDUCTION ZONES ; 3 GPA ; MAGNESIUM ; BASALTS ; ASTHENOSPHERE ; GEOCHEMISTRY ; GENESIS ; ISLAND ; EARTH
WOS研究方向Science & Technology - Other Topics
语种英语
出版者OXFORD UNIV PRESS
WOS记录号WOS:000397767600017
资助机构National Natural Science Foundation of China(41230209 ; National Natural Science Foundation of China(41230209 ; 41322022 ; 41322022 ; 41430105) ; 41430105) ; National Natural Science Foundation of China(41230209 ; National Natural Science Foundation of China(41230209 ; 41322022 ; 41322022 ; 41430105) ; 41430105) ; National Natural Science Foundation of China(41230209 ; National Natural Science Foundation of China(41230209 ; 41322022 ; 41322022 ; 41430105) ; 41430105) ; National Natural Science Foundation of China(41230209 ; National Natural Science Foundation of China(41230209 ; 41322022 ; 41322022 ; 41430105) ; 41430105)
源URL[http://ir.iggcas.ac.cn/handle/132A11/53052]  
专题地质与地球物理研究所_中国科学院地球与行星物理重点实验室
通讯作者Li, Shu-Guang; Yang, Wei
作者单位1.China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Beijing 100083, Peoples R China
2.Univ Sci & Technol China, Sch Earth & Space Sci, Key Lab Crust Mantle Mat & Environm, CAS, Anhua 230026, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
4.Curtin Univ, Inst Geosci Res, Dept Appl Geol, Perth, WA 6845, Australia
5.Zhejiang Univ, Sch Earth Sci, Hangzhou 310027, Peoples R China
6.Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Mineral & Metallogeny, Guangzhou 510640, Peoples R China
7.China Earthquake Adm, Inst Geol, Beijing 100029, Peoples R China
8.China Univ Geosci, Fac Earth Sci, State Key Lab Geol Proc Mineral Resources, Wuhan 430074, Peoples R China
9.Chinese Acad Geol Sci, Inst Geol, Beijing 100037, Peoples R China
10.Hefei Univ Technol, Sch Resources & Environm Engn, Hefei 230009, Peoples R China
推荐引用方式
GB/T 7714		 Li, Shu-Guang,Yang, Wei,Ke, Shan,et al. Deep carbon cycles constrained by a large-scale mantle Mg isotope anomaly in eastern China[J]. NATIONAL SCIENCE REVIEW,2017,4(1):111-120.
APA Li, Shu-Guang.,Yang, Wei.,Ke, Shan.,Meng, Xunan.,Tian, Hengci.,...&Yan, Jun.(2017).Deep carbon cycles constrained by a large-scale mantle Mg isotope anomaly in eastern China.NATIONAL SCIENCE REVIEW,4(1),111-120.
MLA Li, Shu-Guang,et al."Deep carbon cycles constrained by a large-scale mantle Mg isotope anomaly in eastern China".NATIONAL SCIENCE REVIEW 4.1(2017):111-120.

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来源：地质与地球物理研究所

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