Problems of modern Ar-40/Ar-39 geochronology: Reviews

	Problems of modern Ar-40/Ar-39 geochronology: Reviews
	Wang Fei; Shi WenBei; Zhu RiXiang
刊名	ACTA PETROLOGICA SINICA
	2014-02-01
卷号	30 期号:2 页码:326-340
关键词	Ar-40/Ar-39 and U-Pb methods Accuracy and error Closure temperature and thermochronology Excess argon in yang and high-pressure samples
ISSN号	1000-0569
文献子类	Article
英文摘要	As an important tool in geochronology, Ar-40/Ar-39 method plays a role in both precise dating and thermochronology. Compared with U-Pb method, Ar-40/Ar-39 geochronology is more widely applied in thermal history and geodynamic process of the crust. Because of the high potassium content in nature and only isotopic ratios to be analyzed during experiment, Ar-40/Ar-39 method has a high analytical precision, therefore, it can be used to date very young (e. g., thousands of years) samples. Moreover, based on the nature of chemical inertia and describable behavior, Ar-40/Ar-39 technique is widely used to quantitatively calculate thermal history of uplift, denudation and metamorphism of deep crustal material, which are important in understanding orogeny and crust-mantle reaction. Nevertheless, how well has Ar-40/Ar-39 technique developed at present? How exactly can it date natural geological sample? Why seldom was excess argon recognized within yang samples and those from high-pressure belt? Does pressure affect the closure temperature of argon isotope system? Can the age spectrum of K-feldspar reflect the thermohistory truly? What should we be ware when using Ar-40/Ar-39 and U-Pb method? These problems are discussed carefully in this paper in order to stimulate a broader discussion on Ar-40/Ar-39 geochronology.
WOS关键词	FISH CANYON TUFF ; YOUNG VOLCANIC-ROCKS ; K-FELDSPAR ; DATING STANDARDS ; ARGON DIFFUSION ; U-PB ; ALKALI FELDSPARS ; DECAY CONSTANTS ; WESTERN ALPS ; EXCESS ARGON
WOS研究方向	Geology
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000333224500002
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/86376]
专题	中国科学院地质与地球物理研究所
通讯作者	Wang Fei
作者单位	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	Wang Fei,Shi WenBei,Zhu RiXiang. Problems of modern Ar-40/Ar-39 geochronology: Reviews[J]. ACTA PETROLOGICA SINICA,2014,30(2):326-340.
APA	Wang Fei,Shi WenBei,&Zhu RiXiang.(2014).Problems of modern Ar-40/Ar-39 geochronology: Reviews.ACTA PETROLOGICA SINICA,30(2),326-340.
MLA	Wang Fei,et al."Problems of modern Ar-40/Ar-39 geochronology: Reviews".ACTA PETROLOGICA SINICA 30.2(2014):326-340.