Kink Bands in Foliated Rocks: A Field, Theoretical, and Experimental Study

扭结带是在中上部地壳变形的片理岩石中发育的普遍结构，具有确定产生扭结带的变形事件的有限应变和主应力方向的潜力。本项目将通过理论建模、自然发生的扭带详细观测和实验相结合的方法来研究片理岩中扭带形成的机理。通过将扭扭带的方向和几何形状与各向异性介质在应力状态下的力学响应联系起来，本工作将为扭扭带的力学解释作为区域构造研究的工具提供强有力的基础。

Kink bands are pervasive structures developed in foliated rocks deformed at mid to upper crustal levels, and hold the potential to provide determination of finite strain and principal stress orientation for the episode of deformation that produced them. This project will investigate the mechanics of kink band formation in foliated rocks by the integration of theoretical modeling, detailed observation of naturally-occurring kink bands, and experimentation. By relating the orientation and geometry of kink bands to the mechanical response of an anisotropic medium under states of stress, this work should provide a strong basis for the mechanical interpretation of kink bands as a tool in regional tectonic studies.