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The Kulthieth Formation is a geologic formation in the Yukon and coastal southern Alaska. The former Kushtaka formation is considered an extension of the Kulthieth Formation [ 1 ] It preserves fossils dating back to the late Paleocene though the Early Oligocene periods .
The geology of Alaska includes Precambrian igneous and metamorphic rocks formed in offshore terranes and added to the western margin of North America from the Paleozoic through modern times. The region was submerged for much of the Paleozoic and Mesozoic and formed extensive oil and gas reserves due to tectonic activity in the Arctic Ocean.
The Lisburne Group is a geologic group in Alaska. It preserves fossils dating back to the Carboniferous period. ... Various Contributors to the Paleobiology Database.
The Nanushuk Formation or Nanushuk Group is a geologic group in Alaska in westernmost National Petroleum Reserve in Alaska (NPR-A). Petroleum in these rocks likely was generated beneath Western Alaska North Slope and migrated northeastward into NPR-A.
The Phelan Creek Formation is a geologic formation in Alaska. It preserves fossils dating back to the Permian period. ... Gateway to the Paleobiology Database"
The Colville Group is a geologic group in Alaska. It preserves fossils dating back to the Paleogene period. ... Various Contributors to the Paleobiology Database.
The Etivluk Group is a geologic group in Alaska. It preserves fossils dating back to the Permian period. ... Various Contributors to the Paleobiology Database.
The Chignik Formation is a geologic formation in Alaska. It preserves fossils dating back to the Cretaceous period. ... Gateway to the Paleobiology Database"