line-level: 2" class=MsoNormal>Multi-Layer Detachment Crustal Structure in the Longmen Mountains: Evidences from Neo-Tectonic Deformation and Geophysical Data

• 责任者：Yan Danping (State Key Laboratory of Geological Processes and Mineral Resources ; Ministry of Education ; Beijing 100083 ; China) ; Li Shubing
• 刊名：Earth Science Frontiers
• 出版年：2010
• 卷期：17(5)
• 关键词：地壳结构 ; crustal structure ; 新构造 ; neotectonics ; 深部构造 ; deep-seated structure ; 龙门山断裂带 ; Longmenshan Fault Zone
• 页码：p.106-116
• 图表：3 illus., 52 refs.
• 分类号：0300
• issnNo：ISSN1005-2321
• isbnNo：CN11-3370/P

This paper reports a comprehensive structural section across the Pengguan complex and Xuelongbao pluton, which are the major tectono-petrological units generating the 5·12 Wenchuan Earthquake, and reinterprets the geophysical data published by previous studies.  The authors conclude that a detachment fault at a depth of ～10 km separated the insequence duplex imbricated thrust in the shallow tectonic level, while the rigid basement of the Yangtze Block northwestward wedged into the middle to lower crustal ductile channel, which produced multi-layer detachment crustal structure.