Nb and Ta intracrustal differentiation during granulite-facies metamorphism: Evidence from geochemical data of natural rocks and thermodynamic modeling
文献类型：期刊论文
| 作者 | Huang, Guangyu2; Chen, Yi2; Guo, Jinghui2; Palin, Richard1; Zhao, Lei2 |
| 刊名 | AMERICAN MINERALOGIST
 |
| 出版日期 | 2022-11-25 |
| 卷号 | 107期号:11页码:2020-2033 |
| 关键词 | Nb Ta granulite partial melting forward modeling ultrahigh temperature rutile High-Grade Metamorphism Crustal Melting and Granite Magmas |
| ISSN号 | 0003-004X |
| DOI | 10.2138/am-2022-8260 |
| 英文摘要 | Both continental crust and depleted mantle are characterized by subchondritic Nb/Ta, leading to a mass imbalance when compared to the bulk Earth. Even though several potential high-Nb/Ta reservoirs in Earth's core and undepleted mantle have been proposed, little attention has been given to those in the crust. Here we present bulk-rock and rutile geochemical data for samples from a lower crustal pelitic granulite, North China Craton, which exhibit systematic variation in their Nb and Ta contents. High-temperature (HT) and ultrahigh-temperature (UHT) granulite residues exhibit Nb/Ta ratios that are close to chondritic and subchondritic, respectively, whereas leucosomes from UHT granulite mostly have suprachondritic Nb/Ta. These variations are best explained via competition for Nb and Ta between biotite and rutile during metamorphism, although initial bulk-rock Nb/Ta values also have an effect. As biotite preferentially incorporates Nb over Ta, the early stages of biotite dehydration melting produce a high-Nb/Ta residue and a low-Nb/Ta melt; however, geochemical modeling suggests that once biotite is depleted, the Nb/Ta ratio of the system is instead controlled by rutile growth, which promotes the formation of a lower Nb/Ta residue and a higher Nb/ Ta melt, even though the volume of melt produced at this stage may be small. We propose that in situ and in-source leucosomes and leucocractic veins in UHT terranes may retain a high-Nb/Ta geochemical signature. However, residual crustal-derived A2-type granites that experience significant fractionation of Nb- or Ta-bearing minerals during crystallization or contamination from other low-Nb/Ta sources cannot retain this high-Nb/Ta ratio, even though these ratios are generally higher than that of S-type granites. Anhydrous partial melting of metapelite can generate Nb-rich melts, such that high-temperature leucosomes, in addition to related A2-type granites, may represent significant Nb deposits. |
| WOS关键词 | NORTH CHINA CRATON ; ULTRAHIGH-TEMPERATURE METAMORPHISM ; ZIRCON U-PB ; HIGH-PRESSURE GRANULITES ; HIGH-GRADE METAMORPHISM ; A-TYPE GRANITOIDS ; HIGHLAND COMPLEX ; SRI-LANKA ; SAPPHIRINE-BEARING ; TRACE-ELEMENTS |
| 资助项目 | National Natural Science Foundation of China[41890832] ; National Natural Science Foundation of China[41902057] ; National Natural Science Foundation of China[41822202] ; National Natural Science Foundation of China[42172217] ; Program of China-Sri Lanka Joint Center for Water Technology Research and Demonstration by the Chinese Academy of Sciences (CAS) ; China-Sri Lanka Joint Center for Education and Research by the CAS |
| WOS研究方向 | Geochemistry & Geophysics ; Mineralogy |
| 语种 | 英语 |
| WOS记录号 | WOS:000877187100004 |
| 出版者 | MINERALOGICAL SOC AMER |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Program of China-Sri Lanka Joint Center for Water Technology Research and Demonstration by the Chinese Academy of Sciences (CAS) ; Program of China-Sri Lanka Joint Center for Water Technology Research and Demonstration by the Chinese Academy of Sciences (CAS) ; Program of China-Sri Lanka Joint Center for Water Technology Research and Demonstration by the Chinese Academy of Sciences (CAS) ; Program of China-Sri Lanka Joint Center for Water Technology Research and Demonstration by the Chinese Academy of Sciences (CAS) ; China-Sri Lanka Joint Center for Education and Research by the CAS ; China-Sri Lanka Joint Center for Education and Research by the CAS ; China-Sri Lanka Joint Center for Education and Research by the CAS ; China-Sri Lanka Joint Center for Education and Research by the CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Program of China-Sri Lanka Joint Center for Water Technology Research and Demonstration by the Chinese Academy of Sciences (CAS) ; Program of China-Sri Lanka Joint Center for Water Technology Research and Demonstration by the Chinese Academy of Sciences (CAS) ; Program of China-Sri Lanka Joint Center for Water Technology Research and Demonstration by the Chinese Academy of Sciences (CAS) ; Program of China-Sri Lanka Joint Center for Water Technology Research and Demonstration by the Chinese Academy of Sciences (CAS) ; China-Sri Lanka Joint Center for Education and Research by the CAS ; China-Sri Lanka Joint Center for Education and Research by the CAS ; China-Sri Lanka Joint Center for Education and Research by the CAS ; China-Sri Lanka Joint Center for Education and Research by the CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Program of China-Sri Lanka Joint Center for Water Technology Research and Demonstration by the Chinese Academy of Sciences (CAS) ; Program of China-Sri Lanka Joint Center for Water Technology Research and Demonstration by the Chinese Academy of Sciences (CAS) ; Program of China-Sri Lanka Joint Center for Water Technology Research and Demonstration by the Chinese Academy of Sciences (CAS) ; Program of China-Sri Lanka Joint Center for Water Technology Research and Demonstration by the Chinese Academy of Sciences (CAS) ; China-Sri Lanka Joint Center for Education and Research by the CAS ; China-Sri Lanka Joint Center for Education and Research by the CAS ; China-Sri Lanka Joint Center for Education and Research by the CAS ; China-Sri Lanka Joint Center for Education and Research by the CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Program of China-Sri Lanka Joint Center for Water Technology Research and Demonstration by the Chinese Academy of Sciences (CAS) ; Program of China-Sri Lanka Joint Center for Water Technology Research and Demonstration by the Chinese Academy of Sciences (CAS) ; Program of China-Sri Lanka Joint Center for Water Technology Research and Demonstration by the Chinese Academy of Sciences (CAS) ; Program of China-Sri Lanka Joint Center for Water Technology Research and Demonstration by the Chinese Academy of Sciences (CAS) ; China-Sri Lanka Joint Center for Education and Research by the CAS ; China-Sri Lanka Joint Center for Education and Research by the CAS ; China-Sri Lanka Joint Center for Education and Research by the CAS ; China-Sri Lanka Joint Center for Education and Research by the CAS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/107712]  |
| 专题 | 地质与地球物理研究所_岩石圈演化国家重点实验室 |
| 通讯作者 | Huang, Guangyu |
| 作者单位 | 1.Univ Oxford, Dept Earth Sci, Oxford OX1 3AN, England 2.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Huang, Guangyu,Chen, Yi,Guo, Jinghui,et al. Nb and Ta intracrustal differentiation during granulite-facies metamorphism: Evidence from geochemical data of natural rocks and thermodynamic modeling[J]. AMERICAN MINERALOGIST,2022,107(11):2020-2033. |
| APA | Huang, Guangyu,Chen, Yi,Guo, Jinghui,Palin, Richard,&Zhao, Lei.(2022).Nb and Ta intracrustal differentiation during granulite-facies metamorphism: Evidence from geochemical data of natural rocks and thermodynamic modeling.AMERICAN MINERALOGIST,107(11),2020-2033. |
| MLA | Huang, Guangyu,et al."Nb and Ta intracrustal differentiation during granulite-facies metamorphism: Evidence from geochemical data of natural rocks and thermodynamic modeling".AMERICAN MINERALOGIST 107.11(2022):2020-2033. |
入库方式： OAI收割
来源：地质与地球物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。