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龙泉关韧性剪切带位于五台山花岗岩－绿岩地体与阜平高级变质地体的接触部位，它不仅改造了“阜平群”，而且也改造了“五台群”。宏观构造、显微组构和矿物组合研究表明，龙泉关韧性剪切带经历了两期变形作用。早期发生于恒山古陆块－车厂弧地质体－阜平古陆块碰撞过程中，形成低角度逆冲型韧性剪切带，使地壳显著增厚。晚期发生于增厚地壳的纵向伸展过程中，使地壳得以均衡发展，形成低角度伸展型韧性剪切带。龙泉关韧性剪切带的变形特征反映了五台山晚太古代碰撞造山带的构造演化。
The Longquanguan ductile shear zone is located in the contact area between the Wutai Mountain granite-Greenstone and Fuping high-grade metamorphic land. It not only renovated the “Fuping Group” but also transformed “Wutai Group”. The study of macrostructures, microstructures and mineral assemblages shows that the Longquanguan ductile shear zone has undergone two stages of deformation. Early occurred in the Hengshan paleocontinent-car plant arc geology-Fuping paleocontinent collision process, the formation of low-angle thrust ductile shear zone, the crust was significantly thickening. Late occurrence occurred in the thickened crust of the longitudinal extension process, the crust can be balanced development, the formation of low-angle extensible ductile shear zone. The deformation characteristics of the Longquanguan ductile shear zone reflect the tectonic evolution of the Late Archean collision orogenic belt in the Wutai Mountain.