Acta Musei Moraviae

Kurovice Klippe – the first Olistoplaque in Outer Western Carpathians in the Czech Republic (Rača Unit) or a Giant Folded Olistolith?

Kurovice Klippe is part of the alochthonous, so-called outer klippen-zone of the Outer Western Carpathians in Moravia. Klippe, approximately 500 m long, it was almost excavated during the 20th century, and the reconstruction of the original tectonic structure is quite difficult. Layered-grey Upper Jurassic limestone (calciturbidite) was mined, for more than 100 years. It has been known that the original limestones went through a folding process, and the bent structure was already depicted in the old records and publications. The limestone body is surrounded by coarse-grained limestone gravel, which gives the impression of olistostrome. On the basis of new structural-geological data, geophysical measurements, and published old borehole data, a new 3D model of the rampart construction was compiled. The model is based on the existence of at least 3 limestone slices that were compressed and folded by a process of model of fault-bend folds with a ramp angle of 27° crossing the whole limestone cycle. In comparison with the limestone body near Štramberk (group of olistoliths), the klippe near Jasenice (olistolith) or in the south of Moravia Pavlovské vrchy (fault-bend-fold, folded limestone plates), this is the first proven olistoplaque in the Western Carpathians.