Geochemical and Mineralogical Investigation on Different Types of Cenozoic Basalts in the Sanshui Basin:Implications for Magma Mixing Processes
文献类型：CNKI期刊论文
| 作者 | Wei Zhang; Nianqiao Fang; Xiaobo Yuan; Lukai Cui |
| 发表日期 | 2019-08-06 |
| 出处 | Journal of Earth Science
 |
| 关键词 | Sanshui Basin alkali basalt tholeiite magma mixing magma chamber geochemistry |
| 英文摘要 | Two kinds of basalts with different chemical compositions were obtained in the Sanshui Basin, they share the same eruption period. Although they have significant differences in major and trace element concentrations, their isotopic ratios suggest a similar magma source. Based on mineral geochemical analysis, orthopyroxene with reaction rim and zoned clinopyroxene are observed in Zidong(ZD)basalts, but not found in Wangjiegang(WJG) basalts. Linear scanning of these minerals suggests compositional variation between within-plate tholeiite and within-plate alkali-basalt. Presence of a doublelayer magma chamber under the Sanshui Basin, and occurrence of magma mixing between upper and lower chambers is proposed. This magma mixing leads to different chemical composition and mineral constitution of two kinds of basalts, as well as reaction rim and compositional variation of minerals in ZD basalts. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | financial supported by the National Natural Science Foundation of China (Nos. 41276047, 41030853, 41572207, 41440041) ; the Special and Frontier Foundation for the Twelve Five Plan of the China Ocean Mineral Resources Research and Development Association (No. DY125-22-QY-21) |
| 卷 | v.30期:04页:80-88 |
| 语种 | 英文; |
| 分类号 | P534.6;P588.145;P59 |
| ISSN号 | 1674-487X |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/188488]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.CollegeofEarthSciences,EastChinaInstituteofTechnology 2.KeyLaboratoryofMarineGeologyandEnvironment,InstituteofOceanology,ChineseAcademyofSciences 3.SchoolofOceanSciences,ChinaUniversityofGeosciences |
| 推荐引用方式 GB/T 7714 | Wei Zhang,Nianqiao Fang,Xiaobo Yuan,et al. Geochemical and Mineralogical Investigation on Different Types of Cenozoic Basalts in the Sanshui Basin:Implications for Magma Mixing Processes. 2019. |
入库方式： OAI收割
来源：海洋研究所
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