Late mesozoic volcanism in the Great Xing'an range (NE China): Timing and implications for the dynamic setting of NE Asia

doi:10.1016/j.epsl.2006.09.007

	Late mesozoic volcanism in the Great Xing'an range (NE China): Timing and implications for the dynamic setting of NE Asia
	Wang, Fei; Zhou, Xin-Hua; Zhang, Lian-Chang; Ying, Ji-Feng; Zhang, Yu-Tao; Wu, Fu-Yuan; Zhu, Ri-Xiang
刊名	EARTH AND PLANETARY SCIENCE LETTERS
	2006-11-15
卷号	251 期号:1-2 页码:179-198
关键词	volcanism Ar-40/Ar-39 dating NE Asia dynamic setting
ISSN号	0012-821X
DOI	10.1016/j.epsl.2006.09.007
文献子类	Article
英文摘要	Mesozoic volcanism is widespread throughout northeastern China, but precise geochronological constraints were previously lacking. Twenty samples, including basalt and basaltic andesites, from the Great Xing'an Range were collected and subjected to Ar-40/Ar-39 dating. The ages mainly concentrate in four periods: similar to 163-similar to 160 Ma, similar to 147-similar to 140 Ma, similar to 125-similar to 120 Ma and similar to 116-similar to 113 Ma, show that the volcanic succession pulsed from similar to 160 Ma in the Late Jurassic until the Early Cretaceous. This result, combined with the previous compilation of data from the adjacent areas, suggest a volcanic migration from west to east in the northeastern Asia. These volcanic rocks were formed in an extensional setting, as indicated by the occurrence of A-type granites, mafic dyke swarms, metamorphosed core complexes and basins. The timing (similar to 160-140 Ma) of mantal underplating and transition from crustal contraction to extension in this region suggests that all these geological activities occurred immediately followed the closure of Mongol-Okhotsk ocean, which supposed to be closed by similar to 160 Ma. Based on these observations, a shears-shaped lithospheric delamination mechanism is proposed to construe the geodynamic scenario of northeastern Asia during Late Mesozoic: the collision between north China and Siberia around similar to 160 Ma obstructed the westwards movement of the lithosphere induced by the subduction of Pacific plate, this tremendous stress caused the thickened lithospheric delaminating from west edge of the northeast China-Mongolia block at similar to 160 Ma and extended gradually eastwards. This led to mantle upwelling and underplating, resulting volcanisin migration from west to east in northeastern Asia during Late Mesozoic. (c) 2006 Elsevier B.V. All rights reserved.
WOS关键词	AR-40/AR-39 DATING STANDARDS ; METAMORPHIC CORE COMPLEX ; NORTH CHINA ; EASTERN CHINA ; NORTHEASTERN CHINA ; INNER-MONGOLIA ; SOUTHEASTERN CHINA ; CONTINENTAL-CRUST ; LIAONING PROVINCE ; SOUTHWEST JAPAN
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000242298500015
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/66848]
专题	中国科学院地质与地球物理研究所
通讯作者	Wang, Fei
作者单位	Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Wang, Fei,Zhou, Xin-Hua,Zhang, Lian-Chang,et al. Late mesozoic volcanism in the Great Xing'an range (NE China): Timing and implications for the dynamic setting of NE Asia[J]. EARTH AND PLANETARY SCIENCE LETTERS,2006,251(1-2):179-198.
APA	Wang, Fei.,Zhou, Xin-Hua.,Zhang, Lian-Chang.,Ying, Ji-Feng.,Zhang, Yu-Tao.,...&Zhu, Ri-Xiang.(2006).Late mesozoic volcanism in the Great Xing'an range (NE China): Timing and implications for the dynamic setting of NE Asia.EARTH AND PLANETARY SCIENCE LETTERS,251(1-2),179-198.
MLA	Wang, Fei,et al."Late mesozoic volcanism in the Great Xing'an range (NE China): Timing and implications for the dynamic setting of NE Asia".EARTH AND PLANETARY SCIENCE LETTERS 251.1-2(2006):179-198.