Zircon U-Pb ages of the metamorphic supracrustal rocks of the Xinghuadukou Group and granitic complexes in the Argun massif of the northern Great Hinggan Range, NE China, and their tectonic implications

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	Zircon U-Pb ages of the metamorphic supracrustal rocks of the Xinghuadukou Group and granitic complexes in the Argun massif of the northern Great Hinggan Range, NE China, and their tectonic implications
	Wu, G (Wu, Guang); Chen, YC (Chen, Yuchuan); Chen, YJ (Chen, Yanjing); Zeng, QT (Zeng, Qingtao)
刊名	JOURNAL OF ASIAN EARTH SCIENCES
	2012
卷号	49 期号:特刊 SI 页码:214-233
关键词	Zircon U-Pb age Metamorphic supracrustal rocks of the Xinghuadukou Group Granitic complexes Argun massif Great Hinggan Range NE China
ISSN号	1367-9120
英文摘要	The basement of the Argun massif in the northern Great Hinggan Range consists of the metamorphic supracrustal rocks of the Xinghuadukou Group and associated granitic complexes. The metamorphic supracrustal rocks were previously interpreted as Paleoproterozoic, while the granitic complexes were considered Mesoproterozoic in age. This paper presents new zircon LA-MC-ICP-MS U-Pb ages of biotite-plagioclase leptynite and biotite schist from the Xinghuadukou Group in the Lulin Forest area, Heilongjiang Province; zircon SHRIMP U-Pb ages of biotite-plagioclase gneiss from the Xinghuadukou Group in Lulin Forest; and quartz diorite and monzogranite from the granitic complexes in Mohe County, Heilongjiang Province. New geochronological data from the three metasedimentary rock samples of the Xinghuadukou Group can be preliminarily divided into five groups (1) 2017-2765 Ma, (2) 1736-1942 Ma, (3) 1359-1610 Ma. (4) 749-1239 Ma. and (5) 448-716 Ma. Except for the zircons of the 448-716 Ma group belonging to a metamorphic origin, the other age groups had the youngest age of 749 +/- 17 Ma, indicating that the Xinghuadukou Group formed during the Neoproterozoic era (at least <749 Ma). These detrital zircon ages cluster at ca. 2.0-1.8 Ga and ca. 1.0-0.80 Ga, suggesting that the Argun massif had connections with both Columbia and Rodinia and implying that the provenance of the Xinghuadukou Group metamorphosed sediments must be characteristic of felsic-intermediate igneous rocks with ages of ca. 2.0-1.8 Ga and ca. 1.0-0.80 Ga. The quartz diorite and monzogranite from the granitic complexes of the basement within the Argun massif yielded weighted mean ages of 516 +/- 10 Ma and 504 +/- 9 Ma, respectively, indicating that these rocks emplaced in the Early Paleozoic. Considering the geochemical and chronological data together, we propose that the Xinghuadukou Group was most likely deposited in a back-arc basin environment, whereas the granitic complexes emplaced in a post-collisional setting. A wide age spectrum of detrital zircons ranging from 749 +/- 9 to 2765 +/- 11 Ma with ages clustering approximately 2.0-1.8 Ga and 1.0-0.80 Ga suggests that the basement rocks of the Argun massif are chiefly composed of the Neoproterozoic metasedimentary sequence and Early Paleozoic granitic complexes, with a few Meso- to Paleoproterozoic and even Neoarchean metamorphic rocks. (C) 2011 Elsevier Ltd. All rights reserved.
学科主题	地质年代学
WOS关键词	NORTHEASTERN TARIM BLOCK ; ISLAND-ARC SYSTEM ; ASIAN FOLD BELT ; NW CHINA ; HEILONGJIANG PROVINCE ; GEOCHEMICAL EVIDENCE ; PALEOZOIC GRANITES ; CRUSTAL EVOLUTION ; SEDIMENTARY-ROCKS ; DETRITAL-ZIRCON
WOS研究方向	Geology
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000303699200016
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/39531]
专题	中国地质调查局
作者单位	Univ Western Australia, Sch Earth & Environm Sci, Ctr Explorat Targeting, Perth, WA 6009, Australia
推荐引用方式 GB/T 7714	Wu, G ,Chen, YC ,Chen, YJ ,et al. Zircon U-Pb ages of the metamorphic supracrustal rocks of the Xinghuadukou Group and granitic complexes in the Argun massif of the northern Great Hinggan Range, NE China, and their tectonic implications[J]. JOURNAL OF ASIAN EARTH SCIENCES,2012,49(特刊 SI):214-233.
APA	Wu, G ,Chen, YC ,Chen, YJ ,&Zeng, QT .(2012).Zircon U-Pb ages of the metamorphic supracrustal rocks of the Xinghuadukou Group and granitic complexes in the Argun massif of the northern Great Hinggan Range, NE China, and their tectonic implications.JOURNAL OF ASIAN EARTH SCIENCES,49(特刊 SI),214-233.
MLA	Wu, G ,et al."Zircon U-Pb ages of the metamorphic supracrustal rocks of the Xinghuadukou Group and granitic complexes in the Argun massif of the northern Great Hinggan Range, NE China, and their tectonic implications".JOURNAL OF ASIAN EARTH SCIENCES 49.特刊 SI(2012):214-233.