Mineralogical and Geochemical Constraints on the Mantle Source Characteristics of Basaltic Lavas from the Central Mariana Trough
文献类型：CNKI期刊论文
| 作者 | LAI Zhiqing; GAO Wei; HAN Zongzhu; GUO Kun; ZHONG Shihua; ZHAO Guangtao |
| 发表日期 | 2023-10-06 |
| 出处 | Journal of Ocean University of China
 |
| 关键词 | backarc basin basalt subduction component mantle lithology magma generation |
| 英文摘要 | The composition of mantle-derived basalts reflects the nature of their mantle source regions, which constrain magma generation and composition. Here we present a new whole rock major and trace elements and phenocryst composition of the basaltic lava in the central Mariana Trough. These data provide insights into the mantle source characteristics affected by subduction components.The rocks range from basalts to basaltic andesites, which have high subduction-mobile element contents(e.g., K, U, Th, LREE) related to N-MORB. The calculated temperature and depth of magma generation are about 1300℃ and 30 km, respectively. Although the results above suggest that the addition of hydrous fluid and/or a melt derived from a slab decreases the temperature of mantle partial melting and mildly modifies the composition of a mantle source, the mantle source lithology from which primary magma is generated remains to be peridotite. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | financially supported by the Shandong Provincial Natural Science Foundation, China (Nos. ZR2 017PD002 and ZR2019BD010) ; the Open Fund of the Key Laboratory of Marine Geology and Environment, Chinese Academy of Sciences (Nos. MGE2019KG05 and MG E2021KG01) ; the Fundamental Research Funds for the Central Universities (No. 202051009) |
| 卷 | v.22期:05页:153-165 |
| 语种 | 英文; |
| 分类号 | P736.3 |
| ISSN号 | 1672-5182 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/186991]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.KeyLaboratoryofSubmarineGeosciencesandProspectingTechniques,MOEandCollegeofMarineGeosciences,OceanUniversityofChina 2.KeyLaboratoryofMarineGeologyandEnvironment,InstituteofOceanology,ChineseAcademyofSciences 3.NationalDeepSeaCenter 4.CenterforIsotopeGeochemistryandGeochronology,PilotNationalLaboratoryforMarineScienceandTechnology(Qingdao) |
| 推荐引用方式 GB/T 7714 | LAI Zhiqing,GAO Wei,HAN Zongzhu,et al. Mineralogical and Geochemical Constraints on the Mantle Source Characteristics of Basaltic Lavas from the Central Mariana Trough. 2023. |
入库方式： OAI收割
来源：海洋研究所
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