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Generation of REE-rich syenite-(carbonatite) complex through lithosphere-asthenosphere interaction: An in-situ Sr-Nd-O isotopic study of the Mesozoic Weishan pluton, Northern China

Zeng, Xi1; Li, Xiaochun1,2; Fan, Hongrui1,2; Lan, Tingguang3; Lan, Jun4; Su, Jianhui5; Zhang, Peng4; Yang, Kuifeng1,2; Zhao, Xinfu5
2022-06-01
Source PublicationJOURNAL OF ASIAN EARTH SCIENCES
ISSN1367-9120
Volume230Pages:14
AbstractCarbonatite-alkaline complexes are commonly derived from the mantle. However, whether the source is litho-spheric or asthenospheric mantle remains debated. In order to better understand this issue, this paper conducts a Sr-Nd-O isotopic study on the Early Cretaceous, Weishan REE-rich syenite-(carbonatite) complex, Northern China. Two types of apatite are identified from the Weishan complex, namely magmatic and xenocrystic apatite. In-situ Sr-Nd isotopic analyses on magmatic apatite yielded (Sr-87/Sr-86)(i) from 0.70690 to 0.70719, and epsilon(Nd)(t) from -7.6 to -8.8. The pristine calcite from carbonatite has similar (Sr-87/Sr-86)(i) (0.70727-0.70739) with magmatic apatite. In-situ oxygen isotopic analyses on zircon yielded delta O-18(VSMOW)(parts per thousand & nbsp;) from 5.9 to 6.7 parts per thousand & nbsp;. Previous studies reveal that coeval, mantle lithosphere-derived rocks in the region have more enriched Sr (Sr-87/(86)Sri greater than 0.709) and Nd [epsilon(Nd)(t) - 12] isotopes than the Weishan complex; whereas the asthenosphere-derived rocks in the region are characterized by depleted Sr-Nd isotopes (Sr-87/Sr-86(i) < 0.706; epsilon(Nd)(t) greater than 0) and low delta(18)O(VSMOW & nbsp;)values (mostly < 5.4 parts per thousand. It is well known that Northern China experienced destruction in the Early Mesozoic, which was accompanied with asthenosphere upwelling along trans-lithosphere faults. Considering that the Weishan complex locates adjacent to the trans-lithosphere Tanlu fault, generation of the complex may be related to asthenosphere-lithosphere interaction. Notably, the Weishan complex differs from coeval REE-barren carbonatites in that its source involved asthenosphere-derived components; hence, involvement of asthenosphere-derived components may be important for the formation of such a REE-rich complex. In general, this study highlights the importance of lithosphere-asthenosphere interaction in supplying necessary heat and materials for the generation of the Weishan complex.
KeywordSr -Nd -O isotopes Asthenosphere-lithosphere interaction Syenite-carbonatite REE Weishan
DOI10.1016/j.jseaes.2022.105191
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS KeywordCARBONATITE COMPLEX ; SHANDONG PROVINCE ; CONTINENTAL-CRUST ; SILICATE ROCKS ; MANTLE SOURCES ; PACIFIC PLATE ; EVOLUTION ; BENEATH ; PB ; CRATON
Language英语
Funding ProjectNational Natural Science Foundation of China[42072092] ; National Natural Science Foundation of China[41930430]
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000789629500001
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/105160
Collection矿产资源研究院重点实验室
Corresponding AuthorLi, Xiaochun
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
2.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Geochem, State Key Lab Ore Deposit Geochem, Guiyang 550081, Peoples R China
4.Explorat Inst Geol & Mineral Resources V, Tai An 271000, Shandong, Peoples R China
5.China Univ Geosci, Sch Earth Resources, Wuhan 430074, Peoples R China
First Author AffilicationKey Laboratory of Mineral Resources, Chinese Academy of Sciences
Corresponding Author AffilicationKey Laboratory of Mineral Resources, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Zeng, Xi,Li, Xiaochun,Fan, Hongrui,et al.

Generation of REE-rich syenite-(carbonatite) complex through lithosphere-asthenosphere interaction: An in-situ Sr-Nd-O isotopic study of the Mesozoic Weishan pluton, Northern China

[J]. JOURNAL OF ASIAN EARTH SCIENCES,2022,230:14.
APA Zeng, Xi.,Li, Xiaochun.,Fan, Hongrui.,Lan, Tingguang.,Lan, Jun.,...&Zhao, Xinfu.(2022).

Generation of REE-rich syenite-(carbonatite) complex through lithosphere-asthenosphere interaction: An in-situ Sr-Nd-O isotopic study of the Mesozoic Weishan pluton, Northern China

.JOURNAL OF ASIAN EARTH SCIENCES,230,14.
MLA Zeng, Xi,et al."

Generation of REE-rich syenite-(carbonatite) complex through lithosphere-asthenosphere interaction: An in-situ Sr-Nd-O isotopic study of the Mesozoic Weishan pluton, Northern China

".JOURNAL OF ASIAN EARTH SCIENCES 230(2022):14.
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