露头为一条糜棱岩带。糜棱岩带是正常地层经受强烈热-动力构造变质变形作用产物。主要特征是，岩石矿物被研磨而细粒化、细化微粒发生位移和流动。其结果是原生层理完全消失，取而代之是生成次生变形面理。糜棱岩带，是一种条带状韧性断裂带，变质变形强度，自中心向两侧，由强变弱。但是糜棱岩带与两侧地层具有明晰界线。

The outcrop is a mylonite zone. Mylonite is derived from strong thermal and dynamic structural metamorphic deformation of normal formation. Its main characteristic was that the rock minerals was grinding and became fine grained; grinding fine particle displaced and flowed. As a result, the primary stratification completely disappeared and replaced by secondary deformation foliation. Mylonite is a banded ductile fracture zone; its metamorphic deformation intensity change becomes strong to weak from center to both sides. But there is a clear boundary between mylonite zone and on both sides of the strata.