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DOI	10.1016/j.jog.2019.101690
	Kinematic evolution of the West Burma block during and after India-Asia collision revealed by paleomagnetism
	Li, Zhenyu; Ding, Lin; Zaw, Than; Wang, Houqi; Cai, Fulong; Yao, Wei; Xiong, Zhongyu; Sein, Kyaing; Yue, Yahui
通讯作者	Ding, L (通讯作者)
发表日期	2020
ISSN	0264-3707
卷号	134
英文摘要	The magnitude and timing of deformation in the form of vertical-axis rotation in the eastern Tibetan Plateau and Southeast Asia during the Cenozoic period are the key to understanding the India-Asia collision and subsequent geological processes. Our new paleomagnetic and geochronological data from Myanmar show that the characteristic remanent magnetization (ChRM) mean directions of sedimentary tuffaceous layers (31 effective specimens) and rhyolites (11 paleomagnetic site-mean directions), which formed at similar to 64.4 Ma and similar to 26.6 Ma, were D +/- Delta D/I +/- Delta I = 50.8 degrees +/- 11.0 degrees/33.1 +/- 9.2 degrees with alpha(95) = 9.2 degrees and D +/- Delta D/I +/- Delta I = 356.8 degrees +/- 6.5 degrees/16.9 degrees +/- 6.2 degrees with alpha 95 = 6.2 degrees, respectively. These data indicate that the West Burma Block (WBB) has experienced a significant clockwise rotation of 38.3 degrees +/- 6.9 degrees since similar to 64.4 Ma and a later counterclockwise rotation of 14.6 +/- 4.2 degrees since similar to 26.6 Ma with respect to stable Asia. The clockwise rotation of similar to 40 degrees of the WBB since 64.4 Ma (early Paleocene) with respect to stable Asia is attributable to the India-Asia collision, and the later counterclockwise rotation of 14.6 degrees +/- 4.2 degrees since 26.6 Ma (late Oligocene) is attributable to the dextral-slip faulting activity of the Sagaing Fault. These paleomagnetic analyses, combined with previously published geological research in SE Asia, are substantially consistent with the predictions of the extrusion model for the SE Asia realm.
关键词	CLOCKWISE ROTATION CRETACEOUS ROCKS SOUTHERN TIBET ARC BASIN FOLD TEST DEFORMATION CHINA HISTORY TECTONICS EXTRUSION
英文关键词	West Burma block; Kinematic evolution; Vertical-Axis rotation; Paleomagnetism; Zircon U-Pb dating
语种	英语
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000519667600006
来源期刊	JOURNAL OF GEODYNAMICS
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259739
推荐引用方式 GB/T 7714	Li, Zhenyu,Ding, Lin,Zaw, Than,et al. Kinematic evolution of the West Burma block during and after India-Asia collision revealed by paleomagnetism[J]. 中国科学院青藏高原研究所,2020,134.
APA	Li, Zhenyu.,Ding, Lin.,Zaw, Than.,Wang, Houqi.,Cai, Fulong.,...&Yue, Yahui.(2020).Kinematic evolution of the West Burma block during and after India-Asia collision revealed by paleomagnetism.JOURNAL OF GEODYNAMICS,134.
MLA	Li, Zhenyu,et al."Kinematic evolution of the West Burma block during and after India-Asia collision revealed by paleomagnetism".JOURNAL OF GEODYNAMICS 134(2020).