Laser Ar-40/Ar-39 dating of the siliceous rocks in North Xinjiang

	Laser Ar-40/Ar-39 dating of the siliceous rocks in North Xinjiang
	Tu JiYao 1; Ji JianQing 1; Zhou Jing 1; Xu QinQin 2; Gong JunFeng 1
刊名	ACTA PETROLOGICA SINICA
	2013-08-01
卷号	29 期号:8 页码:2796-2802
关键词	Laser Ar-40/Ar-39 dating Siliceous rocks Junggar Basin
ISSN号	1000-0569
文献子类	Article
英文摘要	In the past, it was difficult to get the accurate Ar-40/Ar-39 dating results of siliceous rocks with low potassium and high excess Ar-40 content. In recent years, due to the improvement of instruments and the application of new techniques and methods, in particular, the application of laser Ar-40/Ar-39 dating method, Ar-40/Ar-39 dating method has both high enough precision and low enough background level to meet the requirements of getting precise age for siliceous rocks with low potassium. The method using data of multiple sets of mineral particles to calculate isochrone age can be adopted to eliminate the impact of excess Ar-40 on the age of siliceous rocks. This paper use laser Ar-40/Ar-39 dating method to date two siliceous rocks collected from the edge of the Junggar Basin in north Xinjiang. The age of the sample 08BJT-3 collected from Baijiantan area is 294 +/- 14Ma. It is basically consistent with the depositional age of the Late Carboniferous strata which the siliceous rock sample lies in. The age of the sample KML-2 collected from Karamaili area is 266 +/- 14Ma. It is fully consistent with the activity age of the Karamaili fault zone which strongly transforms the siliceous rock sample. Both of these indicate that the laser Ar-40/Ar-39 dating method can accurately date the siliceous rocks.
WOS关键词	WESTERN JUNGGAR ; MAFIC DYKES ; GEOCHRONOLOGY ; SEQUENCE
WOS研究方向	Geology
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000323689100015
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/87822]
专题	中国科学院地质与地球物理研究所
通讯作者	Tu JiYao
作者单位	1.Peking Univ, Sch Earth & Space Sci, Lab Orogen Belts & Crustal Evolut, Beijing 100871, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Tu JiYao,Ji JianQing,Zhou Jing,et al. Laser Ar-40/Ar-39 dating of the siliceous rocks in North Xinjiang[J]. ACTA PETROLOGICA SINICA,2013,29(8):2796-2802.
APA	Tu JiYao,Ji JianQing,Zhou Jing,Xu QinQin,&Gong JunFeng.(2013).Laser Ar-40/Ar-39 dating of the siliceous rocks in North Xinjiang.ACTA PETROLOGICA SINICA,29(8),2796-2802.
MLA	Tu JiYao,et al."Laser Ar-40/Ar-39 dating of the siliceous rocks in North Xinjiang".ACTA PETROLOGICA SINICA 29.8(2013):2796-2802.