Abstract New seismic research was carried out by JSC Marine Arctic Geological Expedition in 2006–2008, providing the first integrated geophysical grid (20×30 km). The main purpose was to study the geological structure of the sedimentary cover of the north Barents shelf and investigate the structural–tectonic plan at different stratigraphic levels. The geological results yielded new information on the tectonic structure, depositional environments, palaeobasin geometry, bathymetry and regional history of geological development. The geological interpretation of the Lower Palaeozoic part of the section provided the most interesting results.