Scheme of the ancient deformation magmatic structures location (frame tectonogens) in the northeastern part of the Baltic Shield. (1) Area of development zones of increased permeability of the crust; (2) territory of the detected mobile permeable zones, including areas of increased seismicity as ancient (interval 9–13 thousand years ago), and modern (1956–2013). Numerals in circles indicate reconstructed mobile permeable zones in the Archean basement of the region. Symbols are shown in Fig. 6

  Part of: Filatova VT (2019) Formation of defused stress areas in the Earth’s crust of the Kola region and associated environmental risks in capital construction. Arctic Environmental Research 19(1): 20-34.