Geochronology and geochemical characteristics of late Mesozoic granotic;rocks from southwestern Fujian and their tectonic evolution

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	Geochronology and geochemical characteristics of late Mesozoic granotic;rocks from southwestern Fujian and their tectonic evolution
	Mao JianRen 3; Chen Rong ; Li JiYu ; Ye HaiMin ; Zhao XiLin
刊名	ACTA PETROLOGICA SINICA
	2006
卷号	22 期号:6 页码:1723-1734
关键词	granites geochronology and geochemistry tin deposit tectonic environmental evolution southwestern Fujian
ISSN号	1000-0569
英文摘要	Late Mesozoic granitic plutons are studied in the paper. The results show the Pb-206/U-238 ages of zircon and the Ar-40-Ar-39 integrated age of biotite are 136.0Ma, 133.9Ma and 132.3Ma respectively in Juzhou granitic pluton; the Pb-206/U-238 ages of zircon in Quartz porphyry of Caidaoqi is 117.4Ma; Rb-Sr isochronal age of Taihua pluton is 114.9Ma, which were formed in Early-Cretaceous. Juzhou granitic rocks are regarded as the crust-derived type granite which is characterized by rich in Si,K,Rb-Th,Y, poor in Sr, Ba, P, Ti, Eu, weakly peraluminous and strongly depleted in transition elements. Quartz porphyry of Caidaoqi was derived from high degree differentiated evolution in Juzhou pluton and would provide main material foundation for tin deposit formation. Juzhou pluton with lower epsilon(Nd) (t) (- 7.21) and higher t(DM) (1.52Ga) was formed by basaltic underplating under lithosphere extension environment. There was a small amount of mantle composition in the rocks. Taihua pluton with higher epsilon(Nd) (t) (-3.60 similar to - 3.68) and lower t(DM) (1.21 Ga) was considered as mixing resources granite of crust-mantle. There was a large amount of mantle composition in the rocks. Peraluminous crust-derived type granites would occur in tensile tectonic environment related to the lithosphere extension. The interaction of crust-mantle made great contributions to tin ore genesis.
学科主题	火成岩岩石学
WOS关键词	SOUTH CHINA ; SUBDUCTION ; PETROLOGY ; GRANITES ; BEARING ; ORIGIN ; TIN
WOS研究方向	Geology
语种	中文
出版者	SCIENCE CHINA PRESS
WOS记录号	WOS:000239220800029
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/38126]
专题	中国地质调查局南京地质调查中心
作者单位	1.Nanjing Inst Mineral Resources, Nanjing 210016, Peoples R China. 2.Natl Taiwan Univ, Dept Geol, Taibei 10617, Taiwan. 3.中国地质调查局南京地质调查中心
推荐引用方式 GB/T 7714	Mao JianRen,Chen Rong,Li JiYu,et al. Geochronology and geochemical characteristics of late Mesozoic granotic;rocks from southwestern Fujian and their tectonic evolution[J]. ACTA PETROLOGICA SINICA,2006,22(6):1723-1734.
APA	Mao JianRen,Chen Rong,Li JiYu,Ye HaiMin,&Zhao XiLin.(2006).Geochronology and geochemical characteristics of late Mesozoic granotic;rocks from southwestern Fujian and their tectonic evolution.ACTA PETROLOGICA SINICA,22(6),1723-1734.
MLA	Mao JianRen,et al."Geochronology and geochemical characteristics of late Mesozoic granotic;rocks from southwestern Fujian and their tectonic evolution".ACTA PETROLOGICA SINICA 22.6(2006):1723-1734.