Cooling history constrained by detrital Ar-40/Ar-39 geochronology in Eastern Himalaya Syntaxis: Implications for climatic and tectonic records.

	Cooling history constrained by detrital Ar-40/Ar-39 geochronology in Eastern Himalaya Syntaxis: Implications for climatic and tectonic records.
	Gong JunFeng 1; Ji JianQing 1; Zhou Jing 1; Chen JianJun 1; Qing JianChun 1; Sun DongXia 1; Han BaoFu 1; Zhong DaLai 2
刊名	ACTA PETROLOGICA SINICA
	2009-03-01
卷号	25 期号:3 页码:621-635
关键词	Eastern Himalaya Syntaxis Laser Ar-40/Ar-39 geochronology Climate Tectonics
ISSN号	1000-0569
文献子类	Article
英文摘要	As one of the most typical examples, Himalaya orogen is the focus in studying an important and front dispute in Earth science. It is a paradox problem that the uplift of mountains is caused by climatic process or by tectonic movement. Both climatic and tectonic uplift are linked to surface erosion, the influence of which to geological system call be described by means of the cooling history of minerals or rocks. So the cooling history of it mountain range is the key to uncover the geological process of rising mountains. Research on minerals front river sediments is one of the most useful methods in modern geological sciences to reveal the geological process and the tectonic evolution. For the purpose described above, newly deposited fine-grain river sand was sampled at Didong reach, which locates around the lower reach of Yalung-Zangbo River, to obtain high precision Ar-40/Ar-39 geochronological data on single crystals of hornblende, muscovite, biotite and K-feldspar collected from the sample, and a statistical diagram of age probability is shown in the contrast figure. The high precision Ar-40/Ar-39 geochronological data on single crystals of minerals from sediments at Didong reach reveals tire cooling history of rocks in the drainage area of Yalung-Zangbo Great Canyon. According to the statistical results, the episodes of cooling history of tire drainage area of Yaluang-Zangbo Great. Canyon can he identified as 70 similar to 69,61 similar to 60,43 similar to 42,35 similar to 34, 26 similar to 25, 25 similar to 23, 22 similar to 20, 20 similar to 18, 17 similar to 14, 12 similar to 11, 8 similar to 6, 5 similar to 4 and < 2Ma respectively. The contrast of age statistical results against the Figure showing the changes in rate and angle of convergence during India plate has been colliding against Eurasian plate since Late Mesozoic shows that probably the ages of 70 similar to 69, 61 similar to 60, 43 similar to 42, 35 similar to 34, 22 similar to 20 and 12 similar to 11 Ma are records of tectonic events of changes in rate and angle of convergence of the two continent, while the contrast of the age statistical results against the diagram consisting of global deep-sea delta O-18 and delta C-13 records suggests that the ages of 26 similar to 25, 25 similar to 23, 17 similar to 14, 8 similar to 6, 5 similar to 4 and <2Ma seem to be the records of global climate change. The Ar-40/Ar-39 geocbronological data published in this paper reveals the interaction of tectonic and climatic in rock uplifting in Eastern Himalaya Syntaxis.
WOS关键词	NAMCHE-BARWA SYNTAXIS ; RIVER SYSTEM ; CARBON-CYCLE ; EXHUMATION ; ZIRCON ; EVOLUTION ; EROSION ; BENGAL ; TIBET ; RECONSTRUCTION
WOS研究方向	Geology
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000264895900014
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/71460]
专题	中国科学院地质与地球物理研究所
通讯作者	Gong JunFeng
作者单位	1.Peking Univ, MOE, Key Lab Orogen Belts & Crustal Evolut, Sch Earth & Space Sci, Beijing 100871, Peoples R China 2.CAS, Inst Geol & Geophys, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Gong JunFeng,Ji JianQing,Zhou Jing,et al. Cooling history constrained by detrital Ar-40/Ar-39 geochronology in Eastern Himalaya Syntaxis: Implications for climatic and tectonic records.[J]. ACTA PETROLOGICA SINICA,2009,25(3):621-635.
APA	Gong JunFeng.,Ji JianQing.,Zhou Jing.,Chen JianJun.,Qing JianChun.,...&Zhong DaLai.(2009).Cooling history constrained by detrital Ar-40/Ar-39 geochronology in Eastern Himalaya Syntaxis: Implications for climatic and tectonic records..ACTA PETROLOGICA SINICA,25(3),621-635.
MLA	Gong JunFeng,et al."Cooling history constrained by detrital Ar-40/Ar-39 geochronology in Eastern Himalaya Syntaxis: Implications for climatic and tectonic records.".ACTA PETROLOGICA SINICA 25.3(2009):621-635.