26 bone samples were radiocarbon (AMS) dated. The bones were almost exclusively those of birds and came from cave deposits correlated mainly with the Vistulian (Weichselian). The material came from six sites: Deszczowa Cave, Upper Rock Shelter of the Deszczowa Cave, Cave in Dziadowa Ska³a, S¹spowska Zachodnia Cave, Mamutowa Cave, and Ob³azowa Cave. The ages of most of the radiocarbon-dated samples were not in agreement with the stratigraphy of layers from which they originated that is proposed in the literature.

ABSTRACT:Lorenc, M. 2013. Radiocarbon ages of bones from Vistulian (Weichselian) cave deposits in Poland and their stratigraphy. Acta Geologica Polonica, 63 (3), 399−424. Warszawa.Twenty-six bone samples from cave sediments mainly of Vistulian (Weichselian) age were radiocarbon (AMS) dated. The material comes from seven localities in the Kraków-Częstochowa Upland and in Podhale (southern Poland). These are: the Komarowa Cave, the Deszczowa Cave, the Upper Rock Shelter of the Deszczowa Cave, the cave in Dziadowa Skała, the Sąspowska Zachodnia Cave, the Mamutowa Cave and the Obłazowa Cave. The obtained radiocarbon ages of most of the samples differs from their stratigraphy as formerly proposed. The reasons for this discrepancy are discussed. Also examined were the radiocarbon ages of bones from other caves in the study area. Most of the dated bones are shown to have come from relatively short time periods. The existing data on radiocarbon age of bones from Vistulian cave deposits of the Kraków-Częstochowa Upland and Podhale are summarized.

LORENC M. 2006. On the taphonomic origins of Vistulian bird remains from cave deposits in Poland. Acta zoologica cracoviensia, 49A(1-2): 63-82.Abstract. The species composition of 23 assemblages of birds whose remains come from Vistulian deposits of 10 caves in southern Poland was compared with that of birds found in the diet of contemporary European Eagle Owls, from 20 sites, and Snowy Owls, from 13 sites. Several similarities were found to occur between bird assemblages from those deposits and from pellets of Eagle Owls. Most of the Vistulian bird remains under analysis seem to come from victims of Eagle Owls. A small proportion of these assemblages may have a different origin; potential sources are indicated.

Abstract:The results presented in this paper of water level fluctuations in selected lakes of Wielkopolski National Park have a preliminary character, contributing new information to the knowledge on this area. Five lakes situated in three distinct tunnel valleys were selected for research: Jarosławieckie, Góreckie, Budzyńskie, Witobelskie and Łódzko-Dymaczewskie. The water level was measured from December 2006 till January 2008 and from January till December of 2012 with ca. monthly frequency. An increase in the water stage was noted in the autumn-winter period, which was rather unusual. The comparison of years 2007 and 2012 indicated higher water levels in the latter. The amplitude of the water level was higher in flow-through lakes due to the reaction to precipitation in early spring as well as different catchment features. Specific water level fluctuations in Lake Góreckie are probably related to the influence of groundwater of the Wielkopolska fossil valley.