Palaeolatitude and age of the Indo-Asia collision: palaeomagnetic   constraints

doi:10.1111/j.1365-246X.2010.04697.x

CORC > 北京大学 > 地球与空间科学学院

	Palaeolatitude and age of the Indo-Asia collision: palaeomagnetic constraints
	Dupont-Nivet, Guillaume ; Lippert, Peter C. ; van Hinsbergen, Douwe J. J. ; Meijers, Maud J. M. ; Kapp, Paul
刊名	geophysical journal international
	2010
关键词	Palaeomagnetism applied to tectonics Continental tectonics: compressional Asia TECTONIC EVOLUTION TIBETAN PLATEAU SOUTHERN TIBET WESTERN HIMALAYA THRUST BELT TIEN-SHAN BASIN SUBDUCTION PRESSURE TETHYAN
DOI	10.1111/j.1365-246X.2010.04697.x
英文摘要	P>Ongoing controversies on the timing and kinematics of the Indo-Asia collision can be solved by palaeomagnetically determined palaeolatitudes of terranes bounding the Indo-Asia suture zone. We show here, based on new palaeomagnetic data from the Linzizong volcanic rocks (54-47 Ma) near the city of Lhasa, that the latitude of the southern margin of Asia was 22.8 +/- 4.2 degrees N when these rocks were deposited. This result, combined with revised palaeomagnetic results from the northernmost sedimentary units of Greater India and with apparent polar wander paths of India and Eurasia, palaeomagnetically constrain the collision to have occurred at 46 +/- 8 Ma (95 per cent confidence interval). These palaeomagnetic results are consistent with tomographic anomalies at 15-25 degrees N that are interpreted to locate the Tethyan oceanic slab that detached following collision, and with independent 56-46 Ma collision age estimates inferred from the timing of slowing down of India, high pressure metamorphism, the end of marine sedimentation and the first occurrence of suture zone and arc detritus on the Greater Indian margin. When compared with apparent polar wander paths of India and Eurasia, the similar to 46 Ma onset of collision at 22.8 +/- 4.2 degrees N implies 2900 +/- 600 km subsequent latitudinal convergence between India and Asia divided into 1100 +/- 500 km within Asia and 1800 +/- 700 km within India.; Geochemistry & Geophysics; SCI(E); EI; 0; ARTICLE; 3; 1189-1198; 182
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/242186]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Dupont-Nivet, Guillaume,Lippert, Peter C.,van Hinsbergen, Douwe J. J.,et al. Palaeolatitude and age of the Indo-Asia collision: palaeomagnetic constraints[J]. geophysical journal international,2010.
APA	Dupont-Nivet, Guillaume,Lippert, Peter C.,van Hinsbergen, Douwe J. J.,Meijers, Maud J. M.,&Kapp, Paul.(2010).Palaeolatitude and age of the Indo-Asia collision: palaeomagnetic constraints.geophysical journal international.
MLA	Dupont-Nivet, Guillaume,et al."Palaeolatitude and age of the Indo-Asia collision: palaeomagnetic constraints".geophysical journal international (2010).