Revisit to time and tectonic environment of the Aksu blueschist terrane in northern Tarim, NW China: New evidence from zircon U-Pb age and Hf isotope

CORC > 中国地质调查局 > 中国地质调查局 > 中国地质调查局天津地质调查中心

	Revisit to time and tectonic environment of the Aksu blueschist terrane in northern Tarim, NW China: New evidence from zircon U-Pb age and Hf isotope
	Zhang Jian 3; Zhang ChuanLin 1; Li HuaiKun ; Ye XianTao 1; Geng JianZhen ; Zhou HongYing
刊名	ACTA PETROLOGICA SINICA
	2014
卷号	30 期号:11 页码:3357-3365
关键词	Aksu blueschist U-Pb age Lu-Hf isotope Tectonic environment Tarim
ISSN号	1000-0569
英文摘要	It is of significant importance to understand the Precambrian tectonic evolution and reconstruction of the Neoproterozoic supercontinent of Tarim block in northwestern China by the study of the timing and tectonic background of the Aksu blueschist and the mafic dyke swarms intruding it. In this study, we carry out U-Pb dating and Hf isotope analysis on zircons from both the meta-clastic rocks of the Aksu blueschist and the mafic dyke swarms. There are two significant age peaks in the U-Pb age spectra of the detrital zircons from the schist, i.e., the older zircon group concentrates at similar to 1.9Ga, with minor Archaean component; another group peaking at similar to 820Ma and representing the oldest deposit time of the Aksu blueschist. The mafic dyke swarms intruding the Aksu blueschist yields a zircon U-Pb age of similar to 760Ma. Hence, the time of the Aksu blueschist facies metamorphism can be quite precisely defined in the range of 820 similar to 760Ma. The peaks of the detrital zircon Hf crust-model age spectra appears at 2.2 similar to 2.3Ga, 2.60a and 3.2 similar to 3.3Ga respectively, implying that Aksu blueschist terrane may be continental margin magmatic arc developed on the Early Precambrian Tarim basement.
学科主题	变质岩岩石学
WOS关键词	WESTERN CHINA ; RODINIA SUPERCONTINENT ; NORTHWEST CHINA ; VOLCANIC-ROCKS ; GEOCHRONOLOGY ; BLOCK ; CRATON ; GEOCHEMISTRY ; SUGETBRAK ; EVOLUTION
WOS研究方向	Geology
语种	中文
出版者	SCIENCE PRESS
WOS记录号	WOS:000346755900018
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/40284]
专题	中国地质调查局天津地质调查中心
作者单位	1.Tianjin Inst Geol & Mineral Resources, Tianjin 300170, Peoples R China 2.Nanjing Inst Geol & Mineral Resources, Nanjing 210016, Jiangsu, Peoples R China 3.中国地质调查局天津地质调查中心
推荐引用方式 GB/T 7714	Zhang Jian,Zhang ChuanLin,Li HuaiKun,et al. Revisit to time and tectonic environment of the Aksu blueschist terrane in northern Tarim, NW China: New evidence from zircon U-Pb age and Hf isotope[J]. ACTA PETROLOGICA SINICA,2014,30(11):3357-3365.
APA	Zhang Jian,Zhang ChuanLin,Li HuaiKun,Ye XianTao,Geng JianZhen,&Zhou HongYing.(2014).Revisit to time and tectonic environment of the Aksu blueschist terrane in northern Tarim, NW China: New evidence from zircon U-Pb age and Hf isotope.ACTA PETROLOGICA SINICA,30(11),3357-3365.
MLA	Zhang Jian,et al."Revisit to time and tectonic environment of the Aksu blueschist terrane in northern Tarim, NW China: New evidence from zircon U-Pb age and Hf isotope".ACTA PETROLOGICA SINICA 30.11(2014):3357-3365.