气候变化领域集成服务门户(CCPortal): Lithospheric Rheology and Crustal Deformation Across the Northeastern Tibet and Their Implications for Plateau Growth

CCPortal

DOI	10.1029/2023GL106666
	Lithospheric Rheology and Crustal Deformation Across the Northeastern Tibet and Their Implications for Plateau Growth
	Li, Zhangjun; Cheng, Feng; Li, Yujiang; Liu, Lei; Zhu, Liangyu; Wang, Yang; Hao, Ming; Zhuang, Wenquan; Xiong, Renwei; Gan, Weijun
发表日期	2024
ISSN	0094-8276
EISSN	1944-8007
卷号	51 期号:2
英文摘要	Understanding lithospheric rheology is crucial in investigating tectonic evolution of intra-continental tectonic boundary. Here, we use geodetic observations to infer lithospheric rheology across the northeastern Tibet based on a 2D viscoelastic model. Our findings reveal a lower-crust viscosity of <10(22) Pas underneath its margins, lower than those estimated underneath its vicinities. By comparing deformation patterns and lithospheric rheology here with those observed in the eastern Tibet, we propose that lateral variations in lower-crust viscosity control deformation patterns and topographic gradients along the Tibet margins. The presence of low viscosity lower-crust can lead to the development of contrasting topographic gradients and shape the plateau's geomorphology and deformation characteristics during outward growth of the Tibet. We here emphasize the subtle variations in the lower-crust rheology between deforming blocks and the corresponding mountain ranges, which play an important role in orogeny along the intracontinental convergence boundary.
关键词	the northeastern Tibet geodetic observations lithospheric rheology viscoelastic deformation plateau growth
英文关键词	LIUPANSHAN FAULT ZONE; ORDOS BLOCK; STRUCTURE BENEATH; EASTERN MARGIN; UPPER-MANTLE; NORTH CHINA; FLOW; REGIONS; CRATON; SLIP
WOS研究方向	Geosciences, Multidisciplinary
WOS记录号	WOS:001148413900001
来源期刊	GEOPHYSICAL RESEARCH LETTERS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/282596
作者单位	Peking University; China Earthquake Administration; The Second Monitoring & Application Center, CEA; Yunnan University; Sun Yat Sen University; China Earthquake Administration; Institute of Earthquake Forecasting, CEA; China Earthquake Administration
推荐引用方式 GB/T 7714	Li, Zhangjun,Cheng, Feng,Li, Yujiang,et al. Lithospheric Rheology and Crustal Deformation Across the Northeastern Tibet and Their Implications for Plateau Growth[J],2024,51(2).
APA	Li, Zhangjun.,Cheng, Feng.,Li, Yujiang.,Liu, Lei.,Zhu, Liangyu.,...&Gan, Weijun.(2024).Lithospheric Rheology and Crustal Deformation Across the Northeastern Tibet and Their Implications for Plateau Growth.GEOPHYSICAL RESEARCH LETTERS,51(2).
MLA	Li, Zhangjun,et al."Lithospheric Rheology and Crustal Deformation Across the Northeastern Tibet and Their Implications for Plateau Growth".GEOPHYSICAL RESEARCH LETTERS 51.2(2024).