Geochemical Constrains on MORB Composition and Magma Sources at East Pacific Rise Between 1?S and 2?S
文献类型：CNKI期刊论文
| 作者 | ZHANG Wei; ZENG Zhigang; CUI Lukai; YIN Xuebo |
| 发表日期 | 2018-04-06 |
| 出处 | Journal of Ocean University of China
 |
| 关键词 | East Pacific Rise EPR1?–2?S mid ocean ridge basalts |
| 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)1?–2?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 ~(87)Sr/~(86)Sr,and high ~(143)Nd/~(144)Nd 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 ~(87)Sr/~(86)Sr and ~(143)Nd/~(144)Nd from 0.702440 to 0.702680 and 0.513086to 0.513200,respectively.This study proposes that one depleted source and two enriched sources contribute to the formation of MORBs from EPR 1?–2?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 11are different,and thus further research is required to determine genesis. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | supported by the Special and Frontier Foundation for the Twelve Five Plan of the China Ocean Mineral Resources Research and Development Association (Nos.DY125-22-QY-21 and DY125-12-R-02) |
| 卷 | v.17期:02页:93-100 |
| 语种 | 英文; |
| 分类号 | P736 |
| ISSN号 | 1672-5182 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/188975]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.KeyLaboratoryofMarineGeologyandEnvironment,InstituteofOceanology,ChineseAcademyofSciences 2.CollegeofEarthSciences,EastChinaInstituteofTechnology |
| 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 1?S and 2?S. 2018. |
入库方式： OAI收割
来源：海洋研究所
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