Malacostratigraphy of Pleistocene slope sediments at Dolní Věstonice (Protected Landscape Area/Biosphere Reserve Pálava)


Vojen Ložek

Geoscience Research Reports 41, 2008 (GRR for 2007), pages 104–109

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The studied slope and loess sediments cover the mildly sloped area built of Tertiary marly deposits at the foot of the Jurassic klippen of the Pálava hills. In the loam pit Nad cihelnou (Figs 1, 2) the lower member of the slope sequence represents a complex of landslide sediments containing redeposited Tertiary marine marls. It includes an early Mid-Pleistocene snail assemblage with the index fossil Campylaea capeki associated with Granariafrumentum in high amounts, which corresponds to the initial phase of an interglacial (samples 1, 2). At the base of the upper member (pale ochreous loams with scree) red soils occur that also contain a thermophilous malacofauna interglacial character of which is confirmed by the occurrence of Celtis stones (samples 5, 6). Also the fauna from a humic fill of a minor groove at the base of the upper member is of moderately warm character (sample 3). The slope sequence is capped by a dark humic topsoil that is discomformably covered by young loesses. In the second site called Úvoz a cleaned section is presented (Fig. 3). It shows a composite bedset that was formed by surface creep induced by solifluidal sliding prior to the deposition of the youngest loess. The main body of the snail fauna is pleniglacial in age, but several layers include redeposited soil material with early glacial more demanding elements. Basic information on biostratigraphic and paleoenvironmental characteristics of particular species is given in tables 1 and 2