 The Earth's crust thickness in Azerbaijan varies in the range from 38 to 55 km.Its maximum thickness is observed in the Minor Caucasus area, while its minimum thickness is typical for the Talysh foothills.Geological setting of the area consists of sedimentary, volcanic-sedimentary, volcanic and terrestrial deposits embracing almost entire stratigraphic range beginning from pre-Cambrian period up to Holocene time.