MORFOLOGICKÉ A GEOFYZIKÁLNÍ PROJEVY EXTENZE VE VRCHOLOVÉ PARTII SMRKU (1276 M) V MORAVSKOSLEZSKÝCH BESKYDECH
Vol.12,(2005)
Culmination part of the Moravskoslezské Beskydy Mts in the area of outcrops of rocks of the Silesian unit is marked with vast gravitational disintegration connected with the rise of trenches, counter slope scarps and the following development of landslides, debris flows and rock avalanches. In the culmination part of Smrk Mt (1276 m) crossasymmetrical trench was identified having the direction correspondent with topolineaments identified by means of digital elevation model. Geophysical sounding using the methods of symmetric resistivity sounding, vertical electric sounding and shallow seismic refraction proved the existence of a zone of reduced concentration in the depth of minimum 40 m. The rise of the trench indicates probably lateral spreading of the whole massif of Smrk Mt which induced the presence of tectonic faults, erosion unloading at the development of deep fault gap valleys of Čeladenka and Ostravice Rivers and sinking of rigid sandstone of middle member of Godula formation into plastic layers of slightly rhythmical flysch of lower member of Godula formation.
Silesian Unit; deep seated gravitational slope deformations; lateral spreading; geophysics; geomorphology; digital elevation model
Agliardi, F. - Crosta, G. - Zanchi, A. (2001): Structural constraints on deepseated slope deformation kinematics. - Engineering Geology, 59, 83-102.
Bisci, C. - Burattini, F. - Dramis, F. - Leoperdi, S. - Pontoni, F. - Pontoni, F. (1996): The Sant´Agata Feltria landslide (Marche Region, central Italy): a case of recurrent earthflow evolving from a deepseated gravitational slope deformation. - Geomorphology, 15, 351-361.
Dikau, R. - Brunsden, D. - Schrott, L. - Ibseb, M.-L. (eds.) (1996): Landslide recognition, Identification, Movements and Causes. - John Wiley & Sons, Chichester 1996, 251 pp.
Di Luzio, E. - BianchiFasani, G. - Esposito, C. - Saroli, M. - Cavinato, G. P. - ScarasciaMugnozza, G. (2004): Massive rockslope failure in the Central Apennines (Italy): the case of the Campo di Giove rock avalanche. - Bull. Eng. Geol. Env., 63, 1-12.
Dramis, F. - Farabollini, P. - Gentili, B. - Pambianchi, G. (1995): Neotectonics and Large-scale Gravitational Phenomena in the Umbria-Marche Apennines, Italy. - In: Slaymaker, O (ed.) "Steepland Geomorphology", John Wiley & Sons, Chichester, 199-217.
Hradecký, J. - Pánek, T. (2000): Geomorphology of the Mt. Smrk Area in the Moravskoslezské Beskydy Mts. (Czech Republic). - Moravian Geographical Reports, Vol. 8, 1/2000, Brno, 45-54.
Kellog, K. S. (2001): Tectonic control on a large landslide complex: Williams Fork Mountains near Dillon, Colorado. - Geomorphology, 41, 355-368.
Kirchner, K. - Krejčí, O. (2002): Slope deformations and their significance for relief development in the middle part of the Outer Western Carpathians in Moravia. - Moravian Geographical Reports 2/ Vol. 10, Brno, s. 10-19.
Krejčí, O. - Hubatka, F. - Švancara, J. (2004): Gravitational spreading of the elevated mountain ridges in the Moravian Silesian Beskids. - Acta. Geodyn. Geomater. 1, 3,1-13.
Martino, S. - Moscatelli, M. - ScarasciaMugnozza, G. (2004): Quaternary mass movements by a structurally complex setting in the central Apennines (Italy). - Engineering Geology, 72, 33-55.
Menčík, E. et al. (1983): Geologie Moravskoslezských Beskyd a Podbeskydské pahorkatiny. - ÚÚG, Praha, 307 pp.
Nemčok, A. (1982): Zosuvy v slovenských Karpatoch. - Veda, Bratislava, 320 pp.
Pasuto, A. - Soldati, M. (1996): Rock spreading. - In: Dikau, R. - Brunsden, D. - Schrott, L. - Ibseb, M.L. (eds.): Landslide recognition, Identification, Movements and Causes. - John Wiley & Sons, Chichester 1996, 122-136.
Pašek, J. (1974): Gravitational blocktype movements. - Proc. 2nd Int. Congr. IAEG, São Paulo, Brasil, V-PC-1.1-V-PC-1.9
Pašek, J. - Košťák, B. (1977): Svahové pohyby blokového typu. - Rozpravy Československé akademie věd - řada matematických a přírodních věd, 87, 3, Academia, Praha.
Rohn, J. - Resch, M. - Schneider, H. - Fernandez-Steeger, T. M. - Czurda, K. (2004): Large scale lateral spreading and related mass movements in the Northern Calcareous Alps. - Bull. Eng. Geol. Env., 63, 71-75.
Tibaldi, A. - Rovida, A. - Corazzato, C. (2004): A giant deep-seated slope deformation in the Italian Alps studied by paleoseismological and morphometric techniques. - Geomorphology, 58, 27-47.
Zischinsky, U. (1966): On the deformation of high slopes. - Proc. 1 st Congress of the Int. Soc. Rock Mech., Vol. 2, 179-185.