Petrogenesis of the early Cretaceous intra-plate basalts from the Western North China Craton: Implications for the origin of the metasomatized cratonic lithospheric mantle

doi:10.1016/j.lithos.2020.105887

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋地质与环境重点实验室

	Petrogenesis of the early Cretaceous intra-plate basalts from the Western North China Craton: Implications for the origin of the metasomatized cratonic lithospheric mantle
	Zhang, Junjie 1,2,3; Guo, Pengyuan 2,3; Sun, Pu 2,3; Niu, Yaoling 2,3,5,6; Xiao, Yuanyuan 2,3; Vasconcelos, Paulo M.4
刊名	LITHOS
	2021
卷号	380 页码:14
关键词	Western North China Craton K-rich basalt Mantle metasomatism Craton metasomatized lithosphere Subducted terrigenous sediments Low-F melt
ISSN号	0024-4937
DOI	10.1016/j.lithos.2020.105887
通讯作者	Guo, Pengyuan(guopy@qdio.ac)
英文摘要	We present new bulk-rock Ar-40/Ar-39 age, major and trace elements and Sr-Nd-Hf isotopic data on the early Cretaceous intra-plate alkali basalts from the Western North China Craton (WNCC) to study the origin of the metasomatized cratonic lithosphere mantle. The age of these basalts is similar to 116 Ma. These basalts have elevated incompatible element abundance with high [La/Sm](N) (2.80-4.56) and enriched Sr-Nd-Hf isotopic compositions (Sr-87/(86)Sri = 0.7062-0.7075, epsilon(Nd)(t) = -6.0 to -13.0 and epsilon(Hf)(t) = -8.3 to -17.4), being similar to the contemporary analogues from the Western North China Craton and Paleozoic kimberlites and mantle xenoliths. The WNCC basalts also show good correlations between Nd(t) and Hf(t), and high [La/Sm](N). All these geochemical observations are consistent with the interpretation that these basalts originated from partial melting of the lithospheric mantle that experienced melt metasomatism. Two types metasomatism melts are required to explain the geochemical characteristics of these rocks. The obvious negative Nb-Ta (compared with K)-Ti and positive Ba-Pb anomalies observed in these basalts further constrain that one of the metasomatic melts was derived from the subducted terrigenous sediment. Furthermore, the overall higher P/Nd, Nb/La and Nb/Th and lower Lu/Hf of basalts in the WNCC suggest that there is also contribution of low-F melts from asthenosphere mantle. Collectively, we suggest that the formation of the metasomatized lithosphere mantle beneath the WNCC is the process of metasomatic reaction between mantle peridotite and the melts of different origin to generate metasomatic veins containing amphibole/phlogopite. Partial melting of the metasomatic lithospheric mantle at 106-120 Ma in the WNCC was considered to be induced by thermal perturbation that was ultimately related to the breakoff of the subducted oceanic slab following the closure of the Mongolia-Okhotsk ocean. (c) 2020 Elsevier B.V. All rights reserved.
资助项目	NSFC-Shandong Joint Fund for Marine Science Research Centers[U1606401] ; National Natural Science Foundation of China (NSFC)[41776067] ; National Natural Science Foundation of China (NSFC)[41630968] ; National Natural Science Foundation of China (NSFC)[91014003]
WOS研究方向	Geochemistry & Geophysics ; Mineralogy
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000612255400002
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/169682]
专题	海洋研究所_海洋地质与环境重点实验室
通讯作者	Guo, Pengyuan
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266061, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 4.Univ Queensland, Sch Earth Sci, Brisbane, Qld 4072, Australia 5.China Univ Geosci, Sch Earth Sci & Resources, Beijing 100083, Peoples R China 6.Univ Durham, Dept Earth Sci, Durham DH1 3LE, England
推荐引用方式 GB/T 7714	Zhang, Junjie,Guo, Pengyuan,Sun, Pu,et al. Petrogenesis of the early Cretaceous intra-plate basalts from the Western North China Craton: Implications for the origin of the metasomatized cratonic lithospheric mantle[J]. LITHOS,2021,380:14.
APA	Zhang, Junjie,Guo, Pengyuan,Sun, Pu,Niu, Yaoling,Xiao, Yuanyuan,&Vasconcelos, Paulo M..(2021).Petrogenesis of the early Cretaceous intra-plate basalts from the Western North China Craton: Implications for the origin of the metasomatized cratonic lithospheric mantle.LITHOS,380,14.
MLA	Zhang, Junjie,et al."Petrogenesis of the early Cretaceous intra-plate basalts from the Western North China Craton: Implications for the origin of the metasomatized cratonic lithospheric mantle".LITHOS 380(2021):14.