Cenozoic denudation and cooting history of Qinling-Dabie-Sulu orogens: apatite fission track thermochronology constraints.

	Cenozoic denudation and cooting history of Qinling-Dabie-Sulu orogens: apatite fission track thermochronology constraints.
	Hu, SB ; Hao, J ; Fu, MX ; Wu, WP ; Wang, JY
刊名	ACTA PETROLOGICA SINICA
	2005-07-01
卷号	21 期号:4 页码:1167-1173
关键词	Qinling-dabie-sulu Belt Apatite Fission Track Uplift And Denudation Cooling History
ISSN号	1000-0569
文献子类	Article
英文摘要	A total of 100 new apatite fission track (AFT) data from profiles crossing the eastern Qinling into the Yangtze Craton,the Tongbai into the Yangtze foreland thrust and fault belt,the Dabie and the Sulu UHP metamorphic belts,provide a database to evaluate the late Mesozoic and Cenzoic denudation and cooling history of the Qinling-Tongbai-Dabie-Sulu belt on a regional scale. AFT ages of the south Qinling is similar to the Huangling Anticline, but older than that of the North Qinling. The North Qinling is comparable with the Tongbai-Dabie-Sulu area. From the north Qingling to the Dabie, the AFT ages tend to decrease toward the Tanlu Fault, but gently increased in Sulu. Comparing with AFT age pattern of the orogenic belts in the western China, the Tongbai Dabie Sulu belt was not under the same continuous compression system of deformation. Relative to the early stage's exhumation of the UHP rocks, an overall cooling paths for the UHP metamorphic belt can be outlined, and it shows that the post-magmatic (similar to 120 Ma) cooling was much more modest and evener than the episodic and dramatic cooling in the early stages, and that the Yangtze foreland thrust and fault belt, the Huangling anticline and the south Qinling were cooled to the apatite fission track closure temperature much earlier, just followed the Cretaceous plutons than the others. The modeled thermal histories, based on the fission track data and incorporated with available Ar/Ar and K-Ar data, exhibit fairly similar three-stage cooling, starting with an Early Cretaceous rapid cooling event, followed by a period of relative thermal stability keeping the rocks at apatite partial annealing zone temperatures, and ending with a new phase of accelerated cooling during the Pliocene to recent. The first cooling phase has been suggested to reflect the large-scale transtensional deformation between similar to 140 similar to 110 Ma, which is attributed to the Early Cretaceous eastward tectonic escape and Pacific backarc extension. The present AFT age pattern is, therefore, basically controlled by the Cretaceous rapid cooling event but finally shaped through active faults.
WOS关键词	ULTRAHIGH-PRESSURE METAMORPHISM ; CENTRAL CHINA ; EASTERN CHINA ; NORTH CHINA ; ZIRCON ; SHAN ; AGES ; GEOCHRONOLOGY ; COLLISION ; EVOLUTION
WOS研究方向	Geology
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000232291300015
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/65693]
专题	中国科学院地质与地球物理研究所
通讯作者	Hu, SB
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Anhui Inst Geol Survey, Hefei 230001, Peoples R China
推荐引用方式 GB/T 7714	Hu, SB,Hao, J,Fu, MX,et al. Cenozoic denudation and cooting history of Qinling-Dabie-Sulu orogens: apatite fission track thermochronology constraints.[J]. ACTA PETROLOGICA SINICA,2005,21(4):1167-1173.
APA	Hu, SB,Hao, J,Fu, MX,Wu, WP,&Wang, JY.(2005).Cenozoic denudation and cooting history of Qinling-Dabie-Sulu orogens: apatite fission track thermochronology constraints..ACTA PETROLOGICA SINICA,21(4),1167-1173.
MLA	Hu, SB,et al."Cenozoic denudation and cooting history of Qinling-Dabie-Sulu orogens: apatite fission track thermochronology constraints.".ACTA PETROLOGICA SINICA 21.4(2005):1167-1173.