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Highly fractionated granites: Recognition and research

文献类型：期刊论文

作者Wu, FuYuan1,2,3; Liu, XiaoChi1; Ji, WeiQiang1,2; Wang, JiaMin1; Yang, Lei1,3
刊名SCIENCE CHINA-EARTH SCIENCES
出版日期2017-07-01
卷号60期号:7页码:1201-1219
关键词Fractional crystallization Accumulation Highly fractionated granite Granitic magma Continental crustal evolution
ISSN号1674-7313
DOI10.1007/s11430-016-5139-1
文献子类Review
英文摘要Granite is one of the most important components of the continental crust on our Earth; it thus has been an enduring studied subject in geology. According to present knowledge, granite shows a great deal of heterogeneity in terms of its texture, structure, mineral species and geochemical compositions at different scales from small dike to large batholith. However, the reasons for these variations are not well understood although numerous interpretations have been proposed. The key point of this debate is whether granitic magma can be effectively differentiated through fractional crystallization, and, if so, what kind of crystallization occurred during the magmatic evolution. Although granitic magma has high viscosity because of its elevated SiO2 content, we agree that fractional crystallization is effectively processed during its evolution based on the evidence from field investigation, mineral species and its chemical variations, and geochemical compositions. These data indicate that crystal settling by gravitation is not the only mechanism dominating granitic differentiation. On the contrary, flow segregation or dynamic sorting may be more important. Accordingly, granite can be divided into unfractionated, fractionated (including weakly fractionated and highly fractionated) and cumulated types, according to the differentiation degree. Highly fractionated granitic magmas are generally high in primary temperature or high with various volatiles during the later stage, which make the fractional crystallization much easier than the common granitic melts. In addition, effective magmatic differentiation can be also expected when the magma emplaced along a large scale of extensional structure. Highly fractionated granitic magma is easily contaminated by country rocks due to its relatively prolonged crystallization time. Thus, granites do not always reflect the characteristics of the source areas and the physical and chemical conditions of the primary magma. We proposed that highly fractionated granites are an important sign indicating compositional maturity of the continental crust, and they are also closely related to the rare-elemental (metal) mineralization of W, Sn, Nb, Ta, Li, Be, Rb, Cs, REEs, etc.
WOS关键词S-TYPE GRANITES ; A-TYPE GRANITES ; SIERRA-NEVADA BATHOLITH ; LACHLAN FOLD BELT ; STRONGLY PERALUMINOUS GRANITES ; TUOLUMNE INTRUSIVE SERIES ; HIGH-TEMPERATURE GRANITES ; SOUTH MOUNTAIN BATHOLITH ; YOSEMITE-NATIONAL-PARK ; TETRAD REE PATTERNS
WOS研究方向Geology
语种英语
WOS记录号WOS:000406020600001
出版者SCIENCE PRESS
资助机构National Natural Science Foundation of China(41130313) ; National Natural Science Foundation of China(41130313) ; Chinese Academy of Sciences(XDB03010200) ; Chinese Academy of Sciences(XDB03010200) ; National Natural Science Foundation of China(41130313) ; National Natural Science Foundation of China(41130313) ; Chinese Academy of Sciences(XDB03010200) ; Chinese Academy of Sciences(XDB03010200) ; National Natural Science Foundation of China(41130313) ; National Natural Science Foundation of China(41130313) ; Chinese Academy of Sciences(XDB03010200) ; Chinese Academy of Sciences(XDB03010200) ; National Natural Science Foundation of China(41130313) ; National Natural Science Foundation of China(41130313) ; Chinese Academy of Sciences(XDB03010200) ; Chinese Academy of Sciences(XDB03010200)
源URL[http://ir.iggcas.ac.cn/handle/132A11/42975]  
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Wu, FuYuan
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
3.Univ Chinese Acad Sci, Coll Earth Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Wu, FuYuan,Liu, XiaoChi,Ji, WeiQiang,et al. Highly fractionated granites: Recognition and research[J]. SCIENCE CHINA-EARTH SCIENCES,2017,60(7):1201-1219.
APA Wu, FuYuan,Liu, XiaoChi,Ji, WeiQiang,Wang, JiaMin,&Yang, Lei.(2017).Highly fractionated granites: Recognition and research.SCIENCE CHINA-EARTH SCIENCES,60(7),1201-1219.
MLA Wu, FuYuan,et al."Highly fractionated granites: Recognition and research".SCIENCE CHINA-EARTH SCIENCES 60.7(2017):1201-1219.

入库方式： OAI收割

来源：地质与地球物理研究所

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