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楼子店拆离断层系是华北陆块北缘一条大型北东一南西向构造,低角度倾向南东。拆离断层系中韧性剪切带的走向线理与脆性断面上的倾向擦痕表明该断层发育过程中发生了运动学上的转向。拆离断层系绿泥石化带是伸展过程中构造层次递进变浅所致的退化变质作用产物,其中发育了早期近走向和晚期倾向两组线理,记录了上盘早期向北东的韧性剪切到晚期脆性倾向下滑的运动学转向过程。因此,绿泥石矿物的定年可限定这一构造热事件及运动学转向的时间。初步的绿泥石K-Ar定年表明,楼子店拆离断层系绿泥石化带形成始于～121Ma,114—112Ma间发生了运动学的转向。
The Louzidian detachment fault system is a large north-east-south-west structure in the northern margin of the North China continent with a low-angle orientation to the south. The trend line of the ductile shear zone in the detachment fault system and the tendency scratches on the brittle fracture surface indicate that kinematic steering occurred during the fault development. The detachment-faulted chlorite zone is a degenerated and metamorphic product caused by progressive shallowing of structural layers during the extension process. Two sets of lineages of early near strike and late tendency are developed, and the toughness Kinematic turn from shear to late brittleness dip. Therefore, the dating of chlorite minerals can limit the timing of this tectonic thermal event and kinematic turning. The initial chlorite K-Ar dating indicates that the formation of the chloritization zone of the Louzidian detachment fault began to turn from kinematics in ~ 121Ma and 114-112Ma.