The effect of bulk rock composition in phase equilibria modelling: a case study of mafic granulites from the North China Craton
文献类型：期刊论文
| 作者 | Zou, Lei1,2,3,4; Guo, Jing-Hui1,2,4; Huang, Guang-Yu2,4; Jiao, Shu-Juan2,4; Tian, Zhong-Hua3; Liu, Ping-Hua3 |
| 刊名 | CONTRIBUTIONS TO MINERALOGY AND PETROLOGY
 |
| 出版日期 | 2022-02-01 |
| 卷号 | 177期号:2页码:24 |
| 关键词 | Mafic granulite Phase equilibrium modelling Effective bulk composition Mismatch North China Craton |
| ISSN号 | 0010-7999 |
| DOI | 10.1007/s00410-022-01887-9 |
| 英文摘要 | A mafic granulite with relatively simple mineralogy and texture from the Miyun Complex in the northern part of the North China Craton is used to discuss the effect of bulk composition uncertainty determined by different techniques [X-ray fluorescence (XRF), mapping, and point counting] on the calculated phase diagrams. LA-ICP-MS U-Pb dating of zircon from this mafic granulite yields magmatic ages of similar to 2.5-2.45 Ga and metamorphic overprinting ages of similar to 1.8 Ga, consistent with previous results. Based on phase equilibrium modelling, we show that the topological relations of the P-T pseudo-sections calculated from the XRF and point-counting compositions are similar except for the K-feldspar and Fe-Ti oxide stability fields and that the mineral stability fields in the P-T pseudo-section calculated from the mapping composition are distinctly different from the others. Furthermore, the observed and calculated mineral compositions (X All in plagioclase) and mineral proportions (garnet and plagioclase) are matched in the P-T pseudo-section calculated from the point-counting composition, but these are mismatched in the P-T pseudo-section calculated from the mapping composition. For the P-T pseudo-section calculated from the XRF composition, mineral composition isopleths can further constrain the narrow P-T conditions but the observed and calculated mineral proportions do not match. Moreover, we obtain similar T conditions using geo-thermometers (Ti-in-amphibole, two-feldspar, and REE-in-Grt-Cpx geo-thermometers). In addition, we calculated the uncertainties (of the phase-in/out lines and the mineral-proportions and -compositions isopleths) on the thermodynamic modelling and discussed the main source of uncertainties in detail. |
| WOS关键词 | TEMPERATURE METAMORPHIC ROCKS ; P-T CONDITIONS ; MINERAL EQUILIBRIA ; HF ISOTOPES ; TRACE-ELEMENTS ; U-PB ; REACTION TEXTURES ; REACTION PROGRESS ; RARE-EARTH ; CONSTRAINTS |
| 资助项目 | National Natural Science Foundation of China[41972205] ; National Natural Science Foundation of China[41890832] ; National Natural Science Foundation of China[41672191] ; Geological Investigation Project of the China Geological Survey[DD20190003] ; Geological Investigation Project of the China Geological Survey[DD20190370] |
| WOS研究方向 | Geochemistry & Geophysics ; Mineralogy |
| 语种 | 英语 |
| WOS记录号 | WOS:000749201600001 |
| 出版者 | SPRINGER |
| 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 ; Geological Investigation Project of the China Geological Survey ; Geological Investigation Project of the China Geological Survey ; Geological Investigation Project of the China Geological Survey ; Geological Investigation Project of the China Geological Survey ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Geological Investigation Project of the China Geological Survey ; Geological Investigation Project of the China Geological Survey ; Geological Investigation Project of the China Geological Survey ; Geological Investigation Project of the China Geological Survey ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Geological Investigation Project of the China Geological Survey ; Geological Investigation Project of the China Geological Survey ; Geological Investigation Project of the China Geological Survey ; Geological Investigation Project of the China Geological Survey ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Geological Investigation Project of the China Geological Survey ; Geological Investigation Project of the China Geological Survey ; Geological Investigation Project of the China Geological Survey ; Geological Investigation Project of the China Geological Survey |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/104021]  |
| 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 | Liu, Ping-Hua |
| 作者单位 | 1.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China 3.Chinese Acad Geol Sci, Inst Geol, 26 Baiwanzhuang Rd, Beijing 100037, Peoples R China 4.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 | Zou, Lei,Guo, Jing-Hui,Huang, Guang-Yu,et al. The effect of bulk rock composition in phase equilibria modelling: a case study of mafic granulites from the North China Craton[J]. CONTRIBUTIONS TO MINERALOGY AND PETROLOGY,2022,177(2):24. |
| APA | Zou, Lei,Guo, Jing-Hui,Huang, Guang-Yu,Jiao, Shu-Juan,Tian, Zhong-Hua,&Liu, Ping-Hua.(2022).The effect of bulk rock composition in phase equilibria modelling: a case study of mafic granulites from the North China Craton.CONTRIBUTIONS TO MINERALOGY AND PETROLOGY,177(2),24. |
| MLA | Zou, Lei,et al."The effect of bulk rock composition in phase equilibria modelling: a case study of mafic granulites from the North China Craton".CONTRIBUTIONS TO MINERALOGY AND PETROLOGY 177.2(2022):24. |
入库方式： OAI收割
来源：地质与地球物理研究所
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