Substantiation is provided for a model of culture genesis in the Lower Volga Region during the Late Bronze Age (LBA). Three phases corresponding to the succeeding archaeological cultures are recognized in the LBA of the region. The first phase (LBA 1) – the Pokrovsk culture, the second one (LBA 2) – the timber-grave culture, the third one (LBA 3) – the Khvalynsk culture of beaded pottery. At the change of phases, monuments of mixed types occur, with combined elements of the preceding and of the subsequent archaeological cultures.