摘要
文章详细论述了龙门山前陆盆地充填地层中所记录的能反映龙门山冲断带道冲推覆作用的地层标识。根据地层标识，并结合龙门山冲断带构造分带、主干断裂与地层切割关系，以及岩浆岩和变质岩年龄频谱，将龙门山冲断带自诺利克期以来的道冲推覆作用分为６个边冲推覆构造幕和１１个逆冲推覆构造事件。龙门山冲断带过冲推覆作用在时间上具多幕性和周期性，在空间上具前展式渐进推覆的特点；逆冲推覆作用的强度具有由北东向南西迁移的特点，并具左旋剪切的特征。
The paper studies the stratigraphic signatures to thrusting of the Longmen Mountainsthrust belt. According to the signatures recorded in Longmen Mountains foreland basin,thethrusting activity of the Longmen Mountains thrust belt since Late Triassic Norian is divided intosix thrusting episodes and eleven thrusting events. The Longmen Mountains thrust belt formedfrom Late Triassic Rhaetian to Quaternary with the developing direction from NW to SE andspreading type of 'piggyback type'.
出处
《成都理工学院学报》
CSCD
1995年第2期1-10,共10页
Journal of Chengdu University of Technology
关键词
逆冲推覆作用
地层标识
前陆盆地
龙门山
thrusting
stratigraphic signature
foreland basin
Longmen Mountains
