Delineation of the Late Triassic granitic pluton from the middle part of Greater Xing' an Mountains showing tetrad REE patterns and its geological implications.

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	Delineation of the Late Triassic granitic pluton from the middle part of Greater Xing' an Mountains showing tetrad REE patterns and its geological implications.
其他题名	Delineation of the Late Triassic granitic pluton from the middle part of Greater Xing' an Mountains showing tetrad REE patterns and its geological implications
	Li ShiChao 1; Li YongFei 2; Wang XingAn 3; Zhu Kai 1
	2016
发表期刊	ACTA PETROLOGICA SINICA
ISSN	1000-0569
卷号	32 期号:9 页码:2793-2806
摘要	The Budunhua pluton is located in the Horqin Right Wing Middle Banner, eastern part of the Central Asia Orogenic Belt. The pluton is mainly composed of medium-fine grained two-mica granites and porphyritic fine-grained muscovite granites. The LA-MCICP-MS U-Pb dating of the zircons indicate that the Budunhua pluton was emplaced in the Late Triassic. The rocks have high SiO2 (73.73% similar to 78. 33%) and(Na2O + K2O) ( 7. 07% similar to 9. 06%) contents, poor CaO (0. 01% similar to 0. 87%) and MgO ( 0. 12% 0. 52%) contents, A/CNK = 1. 02 similar to 1. 23, belong to high-K calcalkaline series. The petrogeochemistry of rare earth element is characterized by strong depletion of Eu, and showing an M-type tetrad pattern. These characteristics indicate that the Budunhua pluton belongs to highly fractionated I-type granites. Zircon epsilon(Hf)(t) values for the Budunhua pluton range from 7. 0 to 12. 4, two-stage model ages (t(DM2)) ranging from 812Ma to 473 Ma. Combining with regional geologic data, the primary magma of Budunhua pluton was derived from partial melting of juvenile crustal material from Neoproterozoic to Early Paleozoic, and formed in the extensional tectonic environment after the closure of the Paleo-Asian Ocean. The tetrad effect granite in Budunhua area with high 1REE and evolution occurred after the intrusion of the primary magma, suggesting that the granite have prospects of REE mineralization.
关键词	A-TYPE GRANITES NE CHINA CONSTRAINTS U-PB ISOTOPE INNER-MONGOLIA TECTONIC EVOLUTION VOLCANIC-ROCKS OROGENIC BELT ZIRCON HF PETROGENESIS Budunhua Tetrad effect Rare metal minerals Late Triassic Greater Xing' an Mountains
收录类别	CSCD
语种	英语
CSCD记录号	CSCD:5789780
引用统计	被引频次：9[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/145310
专题	中国科学院金属研究所
作者单位	1.吉林大学 2.中国科学院金属研究所 3.东北师范大学
推荐引用方式 GB/T 7714	Li ShiChao,Li YongFei,Wang XingAn,et al. Delineation of the Late Triassic granitic pluton from the middle part of Greater Xing' an Mountains showing tetrad REE patterns and its geological implications.[J]. ACTA PETROLOGICA SINICA,2016,32(9):2793-2806.
APA	Li ShiChao,Li YongFei,Wang XingAn,&Zhu Kai.(2016).Delineation of the Late Triassic granitic pluton from the middle part of Greater Xing' an Mountains showing tetrad REE patterns and its geological implications..ACTA PETROLOGICA SINICA,32(9),2793-2806.
MLA	Li ShiChao,et al."Delineation of the Late Triassic granitic pluton from the middle part of Greater Xing' an Mountains showing tetrad REE patterns and its geological implications.".ACTA PETROLOGICA SINICA 32.9(2016):2793-2806.