Libor Vejmelek, AGICO lnc, Brno, 621, Czech Republic, Martin Chadima, AGICO lnc, Brno, Czech Republic; Institute of Geology of the Czech Academy of Sciences, Prague, Czech Republic, Prague, Czech Republic, Michaela Žatecká, Institute of Geology and Palaeontology, Charles University, Prague, Czech Republic, Jaroslav Kadlec, Institute of Geophysics of the Czech Academy of Science, Prague, Czech Republic, Vadim A Kravchinsky, University of Alberta, Edmonton, AB, Canada, Rui Zhang, State Key Laboratory of Continental Dynamics, Department of Geology, Northwest University, Xi’an, China and Sherry Jing, State Key Laboratory of Continental Dynamics, Department of Geology, Northwest University, Xian, China