Publisher © Czech Geological Survey, ISSN: 2336-5757 (online), 0514-8057 (print)
Palaeoecology model of river environment (Duckmantian) in the Intrasudetic Basin (Czech Republic)
Abstract
The studied horizons of the Zacléř Formation (Lampertice Beds) are exposed in the open-cast mine situated near the town of Zacléř. One square meter of a fossiliferous layer was successively removed from the top towards the base and each fossil plant was recorded. Using palaeobotanical and sedimenological data plant taphocenoses are divided into. autochthonous, sub-autochthonous and allochthonous. Five different phytocenoses were reconstructed. 1. vegetation of the proximal channel banks. 2. vegetation of the planar peat swamp (arborescent vegetation). 3. vegetation of the floodplain, 4. vegetation of unstable substrates. 5. vegetation of valley slopes. The studied area was an intermountainous valley with a river, which is interpreted as transitional between braided and meandering river-type with well developed flood plain, low-sinuosity river channel and alternate bars. The river probably flowed from SW to NE, to the place with the highest subsidence rates in the basin near Walbrzych in Poland.
