Anisotropy in Precambrian Rocks and Post-Crystalline Deformation Models

Abstract

The influence of anisotropies in Precambrian rocks in Sweden on post-crystalline deformations is discussed. Schists, e.g. banded gneisses and metabasites, from the Gothenburg region are studied as “anisotropic steering”, which can deviate from the main deformation pattern of the area. A post-crystalline deformation model of single shear type is discussed. Tectonic patterns as ac-planes, syn-tectonic to the grain fabric and B-axes are discussed as anisotropic steering elements at post-crystalline deformation.