Re-assessment of the effect of fractional crystallization on Mo isotopes: Constraints from I-type granitoids and their enclosed mafic magmatic enclaves
文献类型：期刊论文
| 作者 | Chen, Shuo1,2,3; Niu, Yaoling2,4,5; Gong, Hongmei1,2,3; Wang, Xiaohong1,2,3; Xue, Qiqi3 |
| 刊名 | CHEMICAL GEOLOGY
 |
| 出版日期 | 2022-05-20 |
| 卷号 | 597页码:12 |
| 关键词 | Mo isotopes Granitoids Fractional crystallization Source heterogeneity Continental crust |
| ISSN号 | 0009-2541 |
| DOI | 10.1016/j.chemgeo.2022.120814 |
| 通讯作者 | Chen, Shuo(shuochen@qdio.ac.cn) |
| 英文摘要 | In recent years, considerable progress has been made on the study of Mo isotopes in high-temperature geological processes. However, it is still controversial whether Mo isotope fractionation occurs during magmatic differentiation. Here we reassess the effect of magma differentiation on Mo isotope fractionation using published data in conjunction with our new analysis of Mo isotopes in well-characterized I-type granitoids and their enclosed mafic magmatic enclaves (MMEs) from two plutons in the North Qilian Orogen. The MMEs in each pluton, representing earlier cumulates with greater modal proportions of amphibole and biotite, show similar Mo elemental and isotopic compositions to their host granitoids. The absence of covariation of Mo isotopes with Dy/Dy*, Fe2O3 and K/Rb in both plutons further indicates that fractional crystallization of amphibole, biotite and Fe3+-rich minerals does not fractionate Mo isotopes in these granitoids. On the basis of re-assessment of published and our newly obtained Mo isotope data, we find that there is no clear evidence for Mo isotope fractionation during fractional crystallization in igneous rock. Instead, Mo isotopes of our samples correlate positively with Sr isotopes and Rb/La ratios, and negatively with Nd isotopes and Ce/Pb ratios, indicating clearly that magma source compositional variation controls the variation of Mo isotope compositions of these granitoids. |
| 资助项目 | National Natural Science Foundation of China (NSFC)[42176087] ; National Natural Science Foundation of China (NSFC)[41906050] ; National Natural Science Foundation of China (NSFC)[41630968] ; National Natural Science Foundation of China (NSFC)[91958215] ; China Postdoctoral Science Foundation[2019M652496] ; NSFC-Shan-dong Joint Fund for Marine Science Research Centers[U1606401] ; Chinese Academy of Sciences[2021206] ; 111 project[B18048] ; Youth Innovation Promotion Association |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000788828200004 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/178942]  |
| 专题 | 海洋研究所_海洋地质与环境重点实验室 |
| 通讯作者 | Chen, Shuo |
| 作者单位 | 1.Chinese Acad Sci, Ctr Ocean Megasci, 7 Nanhai Rd, Qingdao 266071, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266061, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 4.China Univ Geosci, Beijing 100083, Peoples R China 5.Univ Durham, Dept Earth Sci, Durham DH1 3LE, England |
| 推荐引用方式 GB/T 7714 | Chen, Shuo,Niu, Yaoling,Gong, Hongmei,et al. Re-assessment of the effect of fractional crystallization on Mo isotopes: Constraints from I-type granitoids and their enclosed mafic magmatic enclaves[J]. CHEMICAL GEOLOGY,2022,597:12. |
| APA | Chen, Shuo,Niu, Yaoling,Gong, Hongmei,Wang, Xiaohong,&Xue, Qiqi.(2022).Re-assessment of the effect of fractional crystallization on Mo isotopes: Constraints from I-type granitoids and their enclosed mafic magmatic enclaves.CHEMICAL GEOLOGY,597,12. |
| MLA | Chen, Shuo,et al."Re-assessment of the effect of fractional crystallization on Mo isotopes: Constraints from I-type granitoids and their enclosed mafic magmatic enclaves".CHEMICAL GEOLOGY 597(2022):12. |
入库方式： OAI收割
来源：海洋研究所
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