气候变化领域集成服务门户(CCPortal): Sharp Lateral Moho Variations Across the SE Tibetan Margin and Their Implications for Plateau Growth

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DOI	10.1029/2019JB018117
	Sharp Lateral Moho Variations Across the SE Tibetan Margin and Their Implications for Plateau Growth
	Xu M.; Huang Z.; Wang L.; Xu M.; Zhang Y.; Mi N.; Yu D.; Yuan X.
发表日期	2020
ISSN	21699313
卷号	125 期号:5
英文摘要	The tectonic uplift of the Tibetan Plateau is a focus in the geosciences. Middle-lower crustal flow is a popular model to interpret the geodynamic mechanism on the margin of the Tibetan Plateau. The model predicts different surface and Moho topographies across the plateau boundary due to the different strengths of the surrounding blocks, that is, sharp boundaries on the eastern plateau boundary and gentle variations in the southeastern plateau boundary. Here, we employ receiver function and common conversion point stacking analysis with the seismic waveforms recorded by the dense ChinArray and other local seismic stations to accurately define the Moho topography in southeastern (SE) Tibet. We find that the Moho under the Tibetan Plateau is much deeper than that under the surrounding Yangtze Craton and Indochina block; abrupt Moho changes are found across the southeastern plateau margin, similar to that under the eastern plateau margin. We interpret these sharp Moho variations across the plateau margin to have developed when the Tibetan Plateau was extruded southeastward in the late Miocene. Subsequent gravity collapse resulted in crustal extension and gentle topographic variation, while the sharp Moho slope was preserved. © 2020 The Authors.
英文关键词	ChinArray; crustal flow; Moho topography; receiver function; Tibetan Plateau
语种	英语
来源期刊	Journal of Geophysical Research: Solid Earth
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/187868
作者单位	State Key Laboratory for Mineral Deposits Research, School of Earth Sciences and Engineering, Nanjing University, Nanjing, China; GeoForschungsZentrum Potsdam, Potsdam, Germany
推荐引用方式 GB/T 7714	Xu M.,Huang Z.,Wang L.,et al. Sharp Lateral Moho Variations Across the SE Tibetan Margin and Their Implications for Plateau Growth[J],2020,125(5).
APA	Xu M..,Huang Z..,Wang L..,Xu M..,Zhang Y..,...&Yuan X..(2020).Sharp Lateral Moho Variations Across the SE Tibetan Margin and Their Implications for Plateau Growth.Journal of Geophysical Research: Solid Earth,125(5).
MLA	Xu M.,et al."Sharp Lateral Moho Variations Across the SE Tibetan Margin and Their Implications for Plateau Growth".Journal of Geophysical Research: Solid Earth 125.5(2020).