HLUBOKÁ SVAHOVÁ DEFORMACE NA KOPCÍCH U LIDEČKA: VÝSLEDKY INVENTARIZAČNÍHO A GEOFYZIKÁLNÍHO PRŮZKUMU

Vol.11,(2004)

Ivo Baroň

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Abstract
A complex interdisciplinary approach of a deep-seated landslide at the Kopce anticlinal ridge enabled us to speculate about its history and evolution. Large blocks of two competent about 20 m thick sandstone layers, superposed each other and combined with plastic 10-15m thick shales of Luhačovice Member, slid down the N slope of the Kopce Hill. They deformed their foreground in accumulation zone, formed pressure ridges and other slope failure features. The 40-50 m deep near-scarp depression behind the plates was filled with boulders and sandstone blocks later (lateral spread as well as rotational block slide in upper part and topple at the rock plates upper margin). 13 pseudo-karst caves have developed there; their total length reaches up to 360 m. Accumulations of the rotational part have creep down the eastern steep slope. The colluvium has periodically accelerated at lower sanstone layers superface at place of the debris flow. An archaeological dating, based on observations of a Lusatian Urn Field Culture defensive mound deforming, showed that the block landslide is older than 2,5 to 3 ka BP.

Keywords:
Western Carpathians; flysch; deep-seated landslides; pseudo-karst caves; landslide dating; Ground Penetrating Radar
References

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