Intercalibration of international and domestic Ar-40/Ar-39 dating standards

doi:10.1007/s11430-006-0461-y

	Intercalibration of international and domestic Ar-40/Ar-39 dating standards
	Wang Fei; He Huaiyu; Zhu Rixiang; Sang Haiqing; Wang Yinglan; Yang Liekun
刊名	SCIENCE IN CHINA SERIES D-EARTH SCIENCES
	2006-05-01
卷号	49 期号:5 页码:461-470
关键词	Ar-40/Ar-39 dating standards intercalibration 49-2 reactor
ISSN号	1006-9313
DOI	10.1007/s11430-006-0461-y
文献子类	Article
英文摘要	Four international standards, Ga1550, MMhb-1, Lp-6, Bern 4M, and one domestic standard BT-1 have been intercalibrated. The repeated measurements on MMhb-1 with different mass demonstrate that MMhb-1 is inhomogeneous in age and its average age is 519.8 Ma. The results of Bern 4M and Lp-6 reflect that they have an invariable value of Ar-40 */Ar-39(k) (F) and the ages we obtained are consensus with their K-Ar age: Lp-6=127.7Ma; Bern 4M=18.2 Ma. Analyses of BT-1 age spectra, Ca/K and CI/K spectra as well as inverse isochrons indicate that the sample is homogeneous and invariable and keeps close chemically, with its trapped argon isotope composition close to the atmosphere. The dating results show that age values are reproducible and steady, total fusion age, step-heating age, plateau age and isochron age are in accord with each other within the error range (2 sigma). Therefore, we recommend 28.7 Ma as the calibrated age of BT-1.
WOS关键词	AR-40-AR-39 STANDARDS ; GEOCHRONOLOGY ; CALIBRATION ; AGES
WOS研究方向	Geology
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000238585200002
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/66500]
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, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Wang Fei,He Huaiyu,Zhu Rixiang,et al. Intercalibration of international and domestic Ar-40/Ar-39 dating standards[J]. SCIENCE IN CHINA SERIES D-EARTH SCIENCES,2006,49(5):461-470.
APA	Wang Fei,He Huaiyu,Zhu Rixiang,Sang Haiqing,Wang Yinglan,&Yang Liekun.(2006).Intercalibration of international and domestic Ar-40/Ar-39 dating standards.SCIENCE IN CHINA SERIES D-EARTH SCIENCES,49(5),461-470.
MLA	Wang Fei,et al."Intercalibration of international and domestic Ar-40/Ar-39 dating standards".SCIENCE IN CHINA SERIES D-EARTH SCIENCES 49.5(2006):461-470.