Pisarenko Vladimir Yu. RussiaSaratovLower Volga Research Institute of Geology and Geophysics, Str. Moscow, 70, Saratov, Saratov region., 413503PisarenkoYA@rusgeology.ru, pisarenko@nvniigg.san.ru Author's articles Paleogeographic and Tectonic Environment in the Lower Permian Halogen Formation from the Southeastern Margin of the Russian Plate Structural features of the lower permian salt-bearing series and the character of salt-tectogenesis manifestations in the northern and northwestern margins of the Сaspian depression. Paper 1 Structural features of the lower Permian salt-bearing series and the character of salt-tectogenesis manifestations in the Caspian Depression. Paper II