Geochronology and Hf isotope of zircon for the Arskartor Be-Nb-Mo deposit in Altay and its geological implications

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 中国科学院矿产资源研究重点实验室

	Geochronology and Hf isotope of zircon for the Arskartor Be-Nb-Mo deposit in Altay and its geological implications
	Wang ChunLong 1,2,3; Qin KeZhang 1,2; Tang DongMei 2; Zhou QiFeng 2; Shen MaoDe 4; Guo ZhengLin 4; Guo XuJi 5
刊名	ACTA PETROLOGICA SINICA
	2015-08-01
卷号	31 期号:8 页码:2337-2352
关键词	Granite and pegmatite zircon U-Pb dating Hf isotope Molybdenite Re-Os dating Arskartor Eastern Allay
文献子类	Article
英文摘要	Located in the Koktokay pegmatitic ore cluster, eastern Altay, the Arskartor Be-Nb-Mo deposit is a large beryllium deposit, bearing gemstone and associated with Nb, Mo, and Ga mineralization. Rare-mental mineralization was developed both in granite and pegmatite, with sulfides like molybdenite and pyrite formed in the late stage, which is unique in Altai pegmatite province. A study of LA-ICP-MS zircon U-Pb dating combined with Hf isotope analysis on the muscovite-albite granite, beryllium-mineralized muscovite-albite granite and striped pegmatite is conducted, Re-Os dating of molybdenite from different zones of pegmatite is carried out as well. Weighted mean 2t6Pb/2HU ages of zircon are 219.2 +/- 2.9 Ma, 222.6 +/- 4.6 Ma and 218.2 +/- 3.9 Ma respectively, molybdenite Re-Os age is 218.6 +/- 1.3 Ma, indicate that the formation of granite followed by pegmatite, and a short evolution history of the graniticpegmatite system. The epsilon(Hf)(t) values are -0.72 similar to +1.33, -0.36 similar to +1.99 and -0.45 similar to +0.38, with t(DM)(c) values of 1298 similar to 1169Ma, 1279 similar to 1130 Ma and 1282 similar to 1229 Ma, respectively, implying that the source area for granite and pegmatite are similar and from the crustal material of Pre-Cambrian micro-continental blocks probably. The granite and pegmatite were formed by melting of thickened crust under an intra-plate tectonic setting during the post-orogenic stage. We infer the Arskartor pegmatite is LCT type from the association of mineralized elements, source material and tectonic setting. Characteristics of geology, geochemistry and geochronology imply that the muscovite-albite granite was the parent pluton for pegmatite.
WOS关键词	ASIAN OROGENIC BELT ; NO. 3 PEGMATITE ; ELEMENT GRANITIC PEGMATITES ; PALEOZOIC TECTONIC HISTORY ; U-PB ZIRCON ; CHINESE ALTAI ; NW CHINA ; CONTINENTAL GROWTH ; SOUTHERN ALTAIDS ; TRACE-ELEMENTS
WOS研究方向	Geology
语种	英语
WOS记录号	WOS:000361075200015
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/62249]
专题	地质与地球物理研究所_中国科学院矿产资源研究重点实验室
作者单位	1.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Xinjiang Res Ctr Mineral Resources, Urumqi 830011, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Xinjiang Geoexplorat Bur Nonferrous Met, Urumqi 830000, Peoples R China 5.Xinjiang Geoexplorat Bur Nonferrous Met, Geol Team 706, Aletai 836500, Peoples R China
推荐引用方式 GB/T 7714	Wang ChunLong,Qin KeZhang,Tang DongMei,et al. Geochronology and Hf isotope of zircon for the Arskartor Be-Nb-Mo deposit in Altay and its geological implications[J]. ACTA PETROLOGICA SINICA,2015,31(8):2337-2352.
APA	Wang ChunLong.,Qin KeZhang.,Tang DongMei.,Zhou QiFeng.,Shen MaoDe.,...&Guo XuJi.(2015).Geochronology and Hf isotope of zircon for the Arskartor Be-Nb-Mo deposit in Altay and its geological implications.ACTA PETROLOGICA SINICA,31(8),2337-2352.
MLA	Wang ChunLong,et al."Geochronology and Hf isotope of zircon for the Arskartor Be-Nb-Mo deposit in Altay and its geological implications".ACTA PETROLOGICA SINICA 31.8(2015):2337-2352.