龙门山盆—山耦合带遥感地质与地震

Remote Sensing Geology and Earthquakes along the Coupling Belt between Longmenshan Mountain and Chengdu Basin

四川的龙门山山体初始形成是在三叠纪末期的晚印支造山运动时期。从侏罗纪开始到白垩纪及新近纪,龙门山前缘经历了四川前陆盆地的演化过程,在晚喜马拉雅运动中,前陆盆地发生褶皱—断裂变形,龙门山再度崛起。在挽近期(更新世—全新世)构造运动中,盆山耦合部位显得特别活跃,形成了由第四系堆积组成的成都坳陷。在龙门山与四川盆地组成的盆山耦合带,隶属中国南北地质带中段,地震活动显得特别活跃,大、中、小地震频繁发生。其中以2008年汶川"5·12"特大地震和2013年"4·20"芦山大地震为代表。

The Longmenshan maintains in Sichuan Province were formed during the Late Indosinian Movement Orogeny of the late Triassic period. An evolutionary process of the Longmenshan front range of Sichuan foreland basin is from Jurassic to Cretaceous period. The fold belt and fault deformation of the foreland basin were experienced in the period of the late Himalayan movement and the Longmenshan were lifted again. In the construction movement period from the Pleistocene to the Holocene the coupling section was very active. The Chengdu depression accepted a large amount of the Quaternary accumulation. In the coupling belts between the Longmenshan maintain and Chengdu basin are belong to the middle part of the South- North seismic belts and is an active seismic belt. The 2008 M8. 0Wenchuan Earthquake and the 2013 M7. 0 Lushan Earthquake occurred just in this fault.