Tracing subducted oceanic slabs in the mantle by using molybdenum isotopes: A case study of intraplate basalts from Northeast China
文献类型：期刊论文
| 作者 | Zheng, Qifang2; Gao, Xiuhe2; Fan, Zhenyu2; He, Guangyu3; Wang, Qian1 ; Fitton, Jane4; Zhou, Daoqing2
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| 刊名 | GEOLOGICAL JOURNAL
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| 出版日期 | 2024-09-05 |
| 页码 | 9 |
| 关键词 | intraplate basalts molybdenum isotopes Northeast China subducted oceanic slabs |
| ISSN号 | 0072-1050 |
| DOI | 10.1002/gj.5030 |
| 英文摘要 | Determining subduction-related processes is crucial for understanding lithological heterogeneity, as substantial quantities of slabs are recycled into the mantle. Molybdenum isotopes are valuable for distinguishing sources materials due to the significant isotope differences between the crust and the mantle. In this study, we systematically investigate Mo isotopes in a suite of well-characterized continental basalts from Keluo and Halaha-Chaoer, located in Northeast China. The delta 98Mo values of Keluo range from -0.41 to -0.23 parts per thousand, with an average of -0.34 parts per thousand, while Halaha-Chaoer samples ranged from -0.18 to -0.12 parts per thousand, with an average of -0.15 parts per thousand. The delta 98Mo values of Keluo basalts are lighter than the mean value of fresh oceanic basalts (-0.21 parts per thousand), whereas those of Halaha-Chaoer basalts are similar to oceanic basalts. Combined with other geochemical indications (LOI, Ce/Pb, La/Yb and so on), the Mo isotopic variations cannot be attributed to chemical weathering, continental crust contamination or magmatic processes. Instead, the delta 98Mo variations in this study are explained by the incorporation of different oceanic crustal materials into the magma sources. Correlations of delta 98Mo with Ba/Th, Th/U, 143Nd/144Nd indicated that both sediment and altered oceanic crust have significantly influenced these variations. This study demonstrates the potential of Mo isotopes to distinguish different types of recycled oceanic crust materials. Our study indicates the great potential of Mo isotopes to distinguish different types of recycled oceanic crust materials in the mantle. image |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001305185000001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/81074]  |
| 专题 | 同位素地球化学国家重点实验室 |
| 通讯作者 | Gao, Xiuhe; Fan, Zhenyu |
| 作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Isotope Geochem, Guangzhou, Peoples R China 2.China Geol Survey, China Aero Geophys Survey & Remote Sensing Ctr Nat, Beijing 100083, Peoples R China 3.Zhejiang Univ, Sch Earth Sci, Hangzhou, Peoples R China 4.Univ Oxford, Dept Earth Sci, Oxford, England |
| 推荐引用方式 GB/T 7714 | Zheng, Qifang,Gao, Xiuhe,Fan, Zhenyu,et al. Tracing subducted oceanic slabs in the mantle by using molybdenum isotopes: A case study of intraplate basalts from Northeast China[J]. GEOLOGICAL JOURNAL,2024:9. |
| APA | Zheng, Qifang.,Gao, Xiuhe.,Fan, Zhenyu.,He, Guangyu.,Wang, Qian.,...&Zhou, Daoqing.(2024).Tracing subducted oceanic slabs in the mantle by using molybdenum isotopes: A case study of intraplate basalts from Northeast China.GEOLOGICAL JOURNAL,9. |
| MLA | Zheng, Qifang,et al."Tracing subducted oceanic slabs in the mantle by using molybdenum isotopes: A case study of intraplate basalts from Northeast China".GEOLOGICAL JOURNAL (2024):9. |
入库方式： OAI收割
来源：广州地球化学研究所
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