Paleomagnetic discussion of when and where India and Asia initially collided

doi:10.3969/j.issn.0001-5733.2010.09.005

	Paleomagnetic discussion of when and where India and Asia initially collided
	Huang Bao-Chun; Chen Jun-Shan; Yi Zhi-Yu
刊名	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
	2010-09-01
卷号	53 期号:9 页码:2045-2058
关键词	Lhasa Block Himalayas Indian and Asian continents Initial collision Paleogeography Paleomagnetism
ISSN号	0001-5733
DOI	10.3969/j.issn.0001-5733.2010.09.005
文献子类	Article
英文摘要	The India-Asia collision was responsible for creating the Himalaya-Tibetan orogen which is a focus of today's solid Earth sciences and is considered to be the best natural laboratory for establishing new theory of continental dynamics. Timing of the India-Asia collision is not only the key boundary condition in all models for the evolution of the Himalaya-Tibetan orogenic system, but also the starting point of all discussions in the formation and evolution of the orogenic system, as well as the dynamics of plateau uplift. Collision between two north-southward moving continents is generally defined as a contact between continental lithospheres accompanied with the disappearance of oceanic lithosphere, and its most direct evidence is whether blocks distributed in both sides of the collision zone had compatible paleolatitudes. This paper aims to explore constraints to the initial timing and paleopositions of the India-Asia collision by analyzing presently available paleomagnetic data from the Lhasa Block and Himalayas. The newly obtained paleomagnetic results from the Linzizong Group (about 64 similar to 44 Ma) imply that the southern leading edge of the Asian continent was situated at paleolatitudes of similar to 10 degrees N in the Northern Hemisphere during the period of about 64 similar to 44 Ma and the initial contact between India and Asia was most likely occurred at 65 similar to 50 Ma. Given that Greater India comprised the present Indian continent and a similar to 950 km northern extension, which was determined from its pre break-up position within East Gondwana and the bathymetry of the Indian Ocean west of Australia, we argue that the initial India-Asia collision most probably occurred between similar to 55 and 60 Ma.
WOS关键词	BENEATH SOUTHERN TIBET ; ZANGBO SUTURE ZONE ; FORE-ARC BASIN ; CONTINENTAL COLLISION ; EURASIA COLLISION ; TECTONIC EVOLUTION ; U-PB ; PALYNOLOGICAL EVIDENCE ; PALEOCENE EVOLUTION ; HIMALAYAN OROGENY
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	SCIENCE CHINA PRESS
WOS记录号	WOS:000282294600005
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/72544]
专题	中国科学院地质与地球物理研究所
通讯作者	Huang Bao-Chun
作者单位	Chinese Acad Sci, State Key Lab Lithospher Evolut, Inst Geol & Geophys, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Huang Bao-Chun,Chen Jun-Shan,Yi Zhi-Yu. Paleomagnetic discussion of when and where India and Asia initially collided[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2010,53(9):2045-2058.
APA	Huang Bao-Chun,Chen Jun-Shan,&Yi Zhi-Yu.(2010).Paleomagnetic discussion of when and where India and Asia initially collided.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,53(9),2045-2058.
MLA	Huang Bao-Chun,et al."Paleomagnetic discussion of when and where India and Asia initially collided".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 53.9(2010):2045-2058.