Deep-seated gravitational slope deformations in the highest parts of the Czech Flysch Carpathians: evolutionary model based on kinematic analysis, electrical imaging and trenching

0368899 - ÚSMH 2012 RIV NL eng J - Journal Article
Pánek, T. - Tábořík, P. - Klimeš, Jan - Komárková, V. - Hradecký, J. - Šťastný, Martin
Deep-seated gravitational slope deformations in the highest parts of the Czech Flysch Carpathians: evolutionary model based on kinematic analysis, electrical imaging and trenching.
Geomorphology. Roč. 129, 1-2 (2011), s. 92-112. ISSN 0169-555X. E-ISSN 1872-695X
Institutional research plan: CEZ:AV0Z30460519; CEZ:AV0Z30130516
Keywords : deep-seated gravitational slope deformations * kinematic analysis * electrical resistivity tomography
Subject RIV: DE - Earth Magnetism, Geodesy, Geography
Impact factor: 2.520, year: 2011
http://www.sciencedirect.com/science/article/pii/S0169555X11000444

Deep-seated gravitational slope deformations (DSGSDs) played an important role during the evolution of mountain ridges of the Outer Western Carpathians. Four DSGSD-affected ridges in the highest part of the Czech sector of the OWC have been subject to multidisciplinary investigation. All the studie DSGSDs are strongly predispose by regional structural fabric. The area of a single DSGSD can be affected by various types of slope movements. Electrical imaging and trenching revealed that besides these mechanisms anisotropic flysch massifs formed by thick-bedded sandstones are strongly exposed to subsurface opening of air-filled voids related to widened crevices. Such a process is driven by deep-seated creep and translational sliding of sandstone beds upon plastic claystones whose strength has been reduced to residual values. Performed dating revealed that some of the studied DSGSDs originated in the Holocene period, particularly in Atlantic and Subboreal chronozones.
Permanent Link: http://hdl.handle.net/11104/0203110