Unroofing around Qaidam Basin of northern Tibet at 30 Ma: constraints from Ar-40/Ar-39 and FT thermochronology on granitoids

	Unroofing around Qaidam Basin of northern Tibet at 30 Ma: constraints from Ar-40/Ar-39 and FT thermochronology on granitoids
	Wang, F ; Lo, CH ; Li, Q ; Wan, JL ; Zheng, DW ; Wang, EQ
刊名	SCIENCE IN CHINA SERIES B-CHEMISTRY
	2002-12-01
卷号	45 页码:70-83
关键词	unroofing Ar-40/Ar-39 fission track Qaidam Basin multi-domain diffusion
ISSN号	1006-9291
文献子类	Article
英文摘要	An Ar-40/Ar-39 and fission track thermochronological study has been carried out on three suites of granitoids collected along the northern and southern edges of the Qaidam Basin to better constrain the mechanisms accommodating the India-Asia collision around the Qaidam Basin (northern Tibet), in order to understand the evolution of the entire deformation area. Mica and K-feldspar have been analyzed and the cooling histories of the latter have been modeled. The cooling histories based upon K-feldspar modeling and fission track ages show that samples simultaneously recorded an important cooling event (7.5-10.7degreesC/Ma) around 30 Ma, which is thought to reflect an increase of denudation rate related to the tectonic activity in this area associated with uplift suggesting significant crustal thickening starting around 30 Ma in this area. The estimated sedimentation rate in the Qaidam Basin, the propagation rate along the Altyn Tagh fault and field observations support this deduction.
WOS关键词	RIVER SHEAR ZONE ; ALTYN-TAGH ; PLATEAU ; TECTONICS ; MANTLE ; SHAN ; EXTENSION ; GROWTH ; CHINA
WOS研究方向	Chemistry
语种	英语
出版者	SCIENCE CHINA PRESS
WOS记录号	WOS:000181811200009
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/77371]
专题	中国科学院地质与地球物理研究所
通讯作者	Wang, F
作者单位	1.State Seismol Bur, Inst Geol, Beijing 100029, Peoples R China 2.Natl Taiwan Univ, Dept Geol, Taipei 106, Taiwan 3.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Wang, F,Lo, CH,Li, Q,et al. Unroofing around Qaidam Basin of northern Tibet at 30 Ma: constraints from Ar-40/Ar-39 and FT thermochronology on granitoids[J]. SCIENCE IN CHINA SERIES B-CHEMISTRY,2002,45:70-83.
APA	Wang, F,Lo, CH,Li, Q,Wan, JL,Zheng, DW,&Wang, EQ.(2002).Unroofing around Qaidam Basin of northern Tibet at 30 Ma: constraints from Ar-40/Ar-39 and FT thermochronology on granitoids.SCIENCE IN CHINA SERIES B-CHEMISTRY,45,70-83.
MLA	Wang, F,et al."Unroofing around Qaidam Basin of northern Tibet at 30 Ma: constraints from Ar-40/Ar-39 and FT thermochronology on granitoids".SCIENCE IN CHINA SERIES B-CHEMISTRY 45(2002):70-83.