TY  - JOUR
A1  - Leiss, B.
A1  - Siegesmund, S.
A1  - Weber, K.
T1  - Texture asymmetries as shear sense indicators in naturally deformed mono- and polyphase carbonate rocks
Y1  - 1999
VL  - 33
IS  - 1/4
SP  - 61
EP  - 74
JF  - Textures and microstructures
DO  - 10.1155/TSM.33.61
DO  - 10.23689/fidgeo-2428
N2  - The microstructural and quantitative texture analyses of a naturally deformed calcite mylonite, a dolomite mylonite and a dolomitic calcite mylonite reveal different texture asymmetries for comparable deformation conditions. Calcite shows a c-axis maximum rotated against the shear sense with regard to the main shear plane. In contrast, the dolomite shows a c-axis maximum rotated with the shear sense. In accordance with the experimental and simulated textures from the literature, this difference proves e-twinning and r-slip for calcite and f-twinning and c-slip for dolomite as the main deformation mechanisms. The dolomitic calcite mylonite shows for both the calcite and the dolomite a c-axis maximum rotated against the shear sense. On account of the microstructure of this sample, the dolomite texture has been passively overtaken from the deformation texture of calcite during a late-deformative dolomitization. The results significantly contribute to the interpretation that the sampled shear zone is a transpressive strikeslip fault.
UR  - http://resolver.sub.uni-goettingen.de/purl?gldocs-11858/6741
ER  -