Middle Palaeolithic, Transitional or Upper Palaeolithic: Geoarchaeological revision of the southern part of the loess site Dzierżysław 1, SW Poland

Abstract Sites identified as the Early Upper Palaeolithic (EUP or transitional industries) in Central Europe (CE) have become subject to extensive discussion on the possible interactions between anatomically modern humans and indigenous human species which inhabited the area in the Marine Isotopic Stage 3 (MIS 3, 50–35 ka BP). An open-air site Dzierzyslaw 1 (SW Poland), known for nearly a hundred years, played a crucial role in envisaging scenarios associated with the development and adaptation of the EUP society. In the late 20th c., due to the excavations in the southern part of the site, it was given status of a multicultural site, with artefacts assigned to the Micoquian, Bohunician and Szeletian culture. This paper presents the findings of the multi-faceted revision of this site. We present the results of field work and chronometric analyses based on a new set of samples and archaeological study of archive records. The use of optically stimulated luminescence (OSL) showed that all the sediments of the site should be assigned to the Plenivistulian (MIS 4/3 and MIS 2). The new chronometric assessment indicates the absence of deposits corresponding to the transitional industries' time window. The sedimentological data integrating with spatial distribution of finds and raw material variation as well as state of preservation and typo-technological features of lithic artefacts indicate that the inventory represents a compilation of the late Middle Palaeolithic (MP, Micoquian) and classical Upper Palaeolithic industries (Aurignacian or Gravettian) with very few pieces corresponding with indeterminate EUP industry. The revision throws a light on the situation in the Moravian Gate and areas north of the Carpathians and Sudetes. The results suggest that sites from the late MP are more numerous than those from the EUP. It seems that the over-representation may result from a long time of accumulation during the MP period. It cannot be excluded that the small number of EUP sites reflects a marginal role of the area north of the Sudetes and Carpathians in the human occupation system of that time.