ИСТИНА

The Chukchi basins are placed between East Siberia margin and the Chukchi Borderland and formed as part of general opening of the Canada Basin in Late Jurassic-Cretaceous time. The Chukchi margin is considered as high petroleum potential play. Combination of Wrangel-Gerald Arch initiation and North Chukchi rifting caused significant reconstruction in sedimentary province. Very large Aptian-Albian and Paleogene clinoforms mark the filling of a basin in front of orogeny. Progradating clinoform successions was mapped out and discussed in terms of reservoir, seal and source rock development. The arch is eroded by Upper Jurassic and Lower Cretaceous unconformity and it could be a key to several large erosionally truncated traps in North Chukchi basin. Furthermore erosion may cause migration from Triassic and Jurassic source rocks to Cretaceous and Paleogene traps.