Landslide complex in the northern part of the Silesian Beskydy Mountains (Czech Republic) |
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Authors: | Jan Hradecký Tomá? Pánek Radka Klimová |
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Institution: | (1) Department of Physical Geography and Geoecology, Faculty of Science, University of Ostrava, Chittussiho 10, 71000 Ostrava, Czech Republic |
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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. |
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Keywords: | Deep-seated gravitational slope deformations Landslide complex 14C dating Geophysical sounding Flysch Silesian Beskydy Mountains Czech Republic |
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