Record details

    Entwicklung des Thayatales im Nationalpark Podyjí (Tscheshische Republik) aufgrund der Morphographie und Schotteranalyse
Statement of responsibility
    Martin Brzák
Other titles
    The Development of the Dyje River Valley in the Podyjí National Park (Czech Republic). An Analysis of the Morphography and the Fluviatile Sediments
    Brzák, Martin
Source title - serial
    Mitteilungen der Österreichischen geographischen Gesellschaft
    Jg. 139
    4 obr., 2 tab., 17 bibl.
    Anglické resumé
    Zkr. název ser.: Mitt. Österr. geogr. Gesell.
Subject group
    analýza valounová
    kvartér moravských úvalů
    národní park
    sedimentace fluviální
Geographical name
    Vranov (Znojmo)
Abstract (in english)
   Geomorphological research into fluviatile features revealed several phases of erosion and accumulation respectively between the remnants of a regional planation surface and the recent floodplain in the deep valley of the Dyje River. Lower Pleistocene terraces could be discerned by studying topographic maps (on a scale of 1:10 000), while detailed field work during the past three years concentrated on less well preserved accumulations. Moreover an intensive study of a short segment of the floodplain was made. The extremely deep valley of the River Dyje (more than 230 m) developed at thr eastern margin of the Bohemian Massif in successive phases of downcutting. Though remnants of Lower Miocene sediments (Ottnangian and Eggenburgian) were found in two places on the planation surface near the valley rim, none could be detected in the valley itself, so there is no proof for pre-Miocene valley cutting processes yet.
   In the Dyjsko-svratecký úval near Znojmo several climatically induced Pleistocene river terraces are preserved, whereas upstream of this town there are no terraces because of slope denudation processes but for a rest of the 30-40 tectonic terrace probably corresponding to level V in ZEMAN's (1973) scheme. The lowest part of the Dyje floodplain is flooded regularly. A brick pebble found at the top flooded too before the construction of the Vranov Dam (1934). The pebbles of the 30-40 terrace consist mostly of more resistant rock types (quartz and Gföhl gneiss) and are both more rounded and more isometric
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
Entered date
    23. 6. 2008
Import date
    8. 8. 2012