With an approximate width of 400 kilometers between present mainland Norway and the Shetland Platform, the continental post-rift basin contains the Teist, Lomvi and Lunde Formations, and lasted throughout the Triassic until the final depositional stages of the overlying latest Triassic to Early Jurassic Statfjord Formation, when the whole area was flooded during a marine transgression from the north and south in late Sinemurian to early Pliensbachian times.