Kink band structures in the Orlica Mts, Middle Sudetes

Abstract

The nature and development of kink bands are considered under the terms of structural factors active during the deformation. These factors control the attitude, of the kinked zone as well as the kink surface. Both, flexural slip and simple shear appear to develop the kink band structures. The two mechanisms often operate together or flexural slip can be replaced by simple shear at a later stage of the inception of kink fold, especially of the low angle one. It is concluded that penetrative kink bands development is a total effect of a number of small distortions, arranged parallel to planes of maximum shearing stresses.