广东省阳春县永宁地区混合岩韧性剪切带内的石英普遍具有低温蠕变产生的显微构造。石英光轴呈一种特殊的小圆环带组构,开展角为70°左右,带轴与面理平行.野外和室内的初步研究表明,这种小圆环带可能是在轴向拉伸应变下,主要由石英晶内(0001)〈(?)〉滑动系统的活动形成的. Quartz in the mixed ductile shear zone of Yongning, Yangchun County, Guangdong Province generally has the microstructure produced by low temperature creep. The optical axis of the quartz is a special small annular structure with an initial angle of about 70 ° and a parallel axis with the plane.The preliminary studies in the field and in the interior indicate that such a small annular zone may be stretched in the axial direction Strain is mainly formed by the activity of the (0001) <(?)> Sliding system within the quartz crystal.