Multi-scale electron crystal-orientation diffraction of seismically active carbonate fault rocks

Markus Ohl
We determine the active deformation mechanisms in two active carbonate fault zones in Greece. Detailed slip-system analyses in combination with high-resolution nanostructural investigations show a throughout contribution of crystal plasticity, evident from subgrain-wall misorientations. Post-deformational static recrystallisation and annealing reduces the grain size and offers an alternative mechanism of nanograin formation. The decrease in grain size results in a grain-boundary strengthening effect and slip localisation which can be observed over several orders of length scales....
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