Publication at Faculty of Science |
2004
Abstract
Small-scale shear zones inclined at intermediate angles to an earlier anisotropy are often observed in deformed rocks. They are traditionally described as shear-bands, C-bands, extensional crenulation cleavage or normal kink-bands formed as a result of extension along the anisotropy.
Their asymmetries are widely used to describe the large-scale kinematics of deformation and the deformational history of a given area. We demonstrate that when various three-dimensional fold structures are observed on two-dimensional outcrop surfaces or in thin section, they can appear geometrically identical.