华东地质2025，Vol.46Issue(1)：16-32,17.DOI:10.16788/j.hddz.32-1865/P.2024.01.018
青藏高原东南缘深部地震探测研究进展及岩石圈圈层结构
Deep seismic exploration and lithospheric structure in southeastern margin of Tibetan Plateau
摘要
Abstract
The southeastern margin of the Tibetan Plateau has experienced Tethys accretion orogeny and collision orogeny between the Indian continent and Eurasian continent,making it one of the typical regions of lat-eral collision between the Indian and Asian plates in the Cenozoic.Multiple complex tectonic movements have led to the widespread development of various metallic and non-metallic minerals,which formed the Sanjiang metallo-genic belt.The lithosphere is the main carrier for recording continental tectonic evolution and mineralization.Re-vealing the layers'structure of the lithosphere is of enormous significance for understanding the Tethyan evolu-tion in the Sanjiang area,the dynamic process of the formation of the Tibetan Plateau,and the ore formation pro-cesses in the southeastern Tibetan Plateau.In this paper,we systematically review the research outcomes of seis-mic detection of crustal and mantle structures on the southeastern margin of the Tibetan Plateau.We obtained the lithospheric bottom interface,Moho depth,and upper crustal thickness(basement boundary)in the Sanjiang area through systematic sampling and interpolation.The results show that the overall variation of the basement inter-face in the study area overall varied intensely,exhibiting mirror symmetry with the Moho interface.The Moho depth gradually deepens from south to north.The thickness of the lithosphere is generally thin in the southwest and thick in the northeast,with an overall thickness range of 60～190 km.关键词
青藏高原东南缘/深部地震探测/基底顶界面/莫霍面/LAB界面Key words
southeastern margin of the Tibetan Plateau/deep seismic exploration/basement interface/Mo-ho depth/LAB interface分类
地球科学引用本文复制引用
王冠,熊小松,李秋生,卢占武,张新彦,吴国炜,王赛..青藏高原东南缘深部地震探测研究进展及岩石圈圈层结构[J].华东地质,2025,46(1):16-32,17.基金项目
国家自然科学基金"伊朗扎格罗斯碰撞带圈层相互作用与金属富集机理(编号:42261144669)"、"北祁连—河西走廊盆地地壳结构沿盆山走向变化及揭示的青藏高原东北缘地壳变形方式的差异(编号:42274134)"和中国国家留学基金项目联合资助. （编号:42261144669）
