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Landslide complex in the northern part of the Silesian Beskydy Mountains (Czech Republic)
Authors:Jan Hradecký  Tomá? Pánek  Radka Klimová
Institution:(1) Department of Physical Geography and Geoecology, Faculty of Science, University of Ostrava, Chittussiho 10, 71000 Ostrava, Czech Republic
Abstract:The study brings new information concerning a large slope deformation in the northern part of the Silesian Beskydy Mountains in the territory of the Czech Republic. The studied area is a large-scale transformation of the forefront of a flysch nappe formed especially by rigid sandstones upon a plastic underlying nappe. As a consequence of the vertical contact of mechanically different formations and depositing conditions of rocks and tectonics on the nappe forefront, several generations of deep-seated slope deformations occurred accompanied by shallow landslides in the historic period. Structural measurement and geophysical sounding proved prevailing lateral spreading in the upper parts of the slopes as well as the occurrence of rotational landslides whose landslide scarps overlap with the line of overthrust of the Godula Nappe on the Těšín Nappe. Radiocarbon dating determined the period of the occurrence of rotational landslides as falling into the Subboreal up to Subatlantic.
Keywords:Deep-seated gravitational slope deformations  Landslide complex            14C dating  Geophysical sounding  Flysch  Silesian Beskydy Mountains  Czech Republic
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