Geochemical Constrains on MORB Composition and Magma Sources at East Pacific Rise Between 1A degrees S and 2A degrees S

doi:10.1007/s11802-018-3223-5

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

	Geochemical Constrains on MORB Composition and Magma Sources at East Pacific Rise Between 1A degrees S and 2A degrees S
	Zhang, Wei 1; Zeng, Zhigang 1; Cui, Lukai 2; Yin, Xuebo 1
刊名	JOURNAL OF OCEAN UNIVERSITY OF CHINA
	2018-04-01
卷号	17 期号:2 页码:297-304
关键词	East Pacific Rise EPR 1 degrees-2 degrees S mid ocean ridge basalts
ISSN号	1672-5182
DOI	10.1007/s11802-018-3223-5
通讯作者	Zhang, Wei(zhangwei@qdio.ac.cn)
英文摘要	The East Pacific Rise (EPR) is a typical fast spreading ridge. To gain a better understanding of the magmatism under ridges, Mid Ocean Ridge Basalts (MORBs) with remarkably heterogeneous compositions are obtained from (EPR) 1A degrees-2A degrees S and multielement geochemical and radioisotope analyses are conducted. Results show that these MORBs have wide variation ranges in trace element concentrations and isotopic ratios. Sample 07 has low concentrations of incompatible elements, and very low Sr-87/Sr-86, and high Nd-143/Nd-144 from 0.70213 to 0.702289 and 0.513234 to 0.513289, respectively. However, other samples show enrichment in incompatible elements to varying degrees, and medium values of Sr-87/Sr-86 and Nd-143/Nd-144 from 0.702440 to 0.702680 and 0.513086 to 0.513200, respectively. This study proposes that one depleted source and two enriched sources contribute to the formation of MORBs from EPR 1A degrees-2A degrees S. Samples 02 and 10 are formed by mixing between one enriched source and one depleted source, while sample 07 is crystallized from the depleted source with no mixing process involved. However, the formation of samples 06 and 11 are different, and thus further research is required to determine genesis.
资助项目	Special and Frontier Foundation for the Twelve Five Plan of the China Ocean Mineral Resources Research and Development Association[DY125-22-QY-21] ; Special and Frontier Foundation for the Twelve Five Plan of the China Ocean Mineral Resources Research and Development Association[DY125-12-R-02]
WOS研究方向	Oceanography
语种	英语
出版者	OCEAN UNIV CHINA
WOS记录号	WOS:000427906900009
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/158354]
专题	海洋研究所_海洋地质与环境重点实验室
通讯作者	Zhang, Wei
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 2.East China Inst Technol, Coll Earth Sci, Nanchang 330013, Jiangxi, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Wei,Zeng, Zhigang,Cui, Lukai,et al. Geochemical Constrains on MORB Composition and Magma Sources at East Pacific Rise Between 1A degrees S and 2A degrees S[J]. JOURNAL OF OCEAN UNIVERSITY OF CHINA,2018,17(2):297-304.
APA	Zhang, Wei,Zeng, Zhigang,Cui, Lukai,&Yin, Xuebo.(2018).Geochemical Constrains on MORB Composition and Magma Sources at East Pacific Rise Between 1A degrees S and 2A degrees S.JOURNAL OF OCEAN UNIVERSITY OF CHINA,17(2),297-304.
MLA	Zhang, Wei,et al."Geochemical Constrains on MORB Composition and Magma Sources at East Pacific Rise Between 1A degrees S and 2A degrees S".JOURNAL OF OCEAN UNIVERSITY OF CHINA 17.2(2018):297-304.