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Lithic technology and dates of the Initial Upper Paleolithic in northern Mongolia: the case of the Bayan-gol 1 site
Jun Takakura  1, *@  , Batmunkh Tsogtbaatar, Shigeo Iida, Yoshiaki Otsuka, Ambiru Maso, Toshiaki Tsurumaru@
1 : Archaeological Research Center, Hokkaido University
* : Auteur correspondant

The emergence of modern humans in North Asia is one of important topics in anthropological and archaeological research of Siberia and Mongolia. Recently, much attention has been focused on the lithic assemblages characterized by the reduction process that combines elements of Levallois method (faceted platforms, hard hammer percussion, flat-faced cores) with Upper Paleolithic technological and typological features, in order to understand the geographical expansion of modern humans in North Asia. The archaeological records belonging to such lithic assemblages termed Initial Upper Paleolithic (IUP) have been obtained from the Russian Altai Mountains, southwestern Trans-Baikal, Mongolia, and northern China. However, the scarcity of reliable radiocarbon dates and inter-regional comparison of techno-typological features has made it difficult to elucidate whether they show a unified cultural phenomenon associated with the expansion of modern humans or not. In this paper, we present the results of the archaeological excavation carried out by the Mongol-Japan joint expedition team at the Bayan-gol 1 site. This site is located on a terrace of the Eg River, which flows into the Serenga River, in Bulgan prefecture, North Mongolia (N 49°2630, E 103°3850). We provide the techno-typological features of the IUP and the radiocarbon dates from the Bayan-gol 1 site, and discuss its implications for the expansion of modern humans in northern Mongolia.

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