The sedimentery basins of this region developed in the collision zone of the Pacific Ocean plate and the continent.
Stresses were transmitted thorough wedge-like lithospheric blocks, such as the Okotsk Sea, East Kamchatka, Aleutian and
2 other smaller blocks. Compression and inversion were more active at the boundaries: P ; P3 ; N1 ; and Z N in places.
K2 P2 P3 N2 Tension, rifting and the increase in the rate of sedimentation were marked in '-2 , P3, Ni - N2, and also N2 - Q in
places. Structural plan changes of the sedimentary basins and possible oil, gas and fluid migration occurred more actively
2 3 1 2 at the boundaries: ; P3 . N , N1 N1 NZ N2
P2 P3 1 N1 'N 2 N3 Ni 1 1