Nanushuk
Description
Source: Wikipédia
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 formation preserves fossils dating back to the Albian-Cenomanian ages of the Cretaceous period. Its thickness varies from about 1500 to about 250 meters. Underneath the Nanushuk lies the Torok Formation.
Until 2015, for more than 50 years about 150 oil exploration wells had had almost zero success; However, in 2015, Repsol announced the Pikka oil pool and in 2016, ConocoPhilips announced the Willow project.
As of 2017, the U.S. Geological Survey estimated that there were 8.7 billion barrels of oil and 25 trillion cubic feet of natural gas in the Nanushuk and Torok Formations, much more than previously estimated.
Découvertes
Source: The Paleobiology Database
Site(s) correspondant(s) à cette formation: 5
Ninuluk : Alaska - North Slope 13817- Colville River-Awuna River : Alaska - ? 18069 upstream from the mouth of the Awuna River
- Kaolak River (UAM) : Alaska - North Slope 24542 along the Kaolak (Koalak) River, NW Alaska
- Kokolik River, section A : Alaska - North Slope Borough 55328 in a cutbank of the Kokolik River, sec 13, T1S, R40W.
- Avingak Creek, section B : Alaska - Norh Slope Borough 55328 Avingak Creek, a tributary of the Kokolik River, near the NE corner of sec 12, T1S, R39W. Similar fossils found in loose boulders in creek bed at sec 2, T1S, R39W.
Publication(s)
La base comprend 4 publication(s).
Source: The Paleobiology Database
- ↑1 2 A. R. Fiorillo and R. A. Gangloff. 2001. Theropod teeth from the Prince Creek Formation (Cretaceous) of northern Alaska, with speculations on Arctic dinosaur paleoecology. Journal of Vertebrate Paleontology 20(4):675-682 (https://doi.org/10.1671/0272-4634(2000)020[0675:ttftpc]2.0.co;2)
- ↑1 2 J. M. Parrish, J. T. Parrish, and J. H. Hutchison, R. A. Spicer. 1987. Late Cretaceous vertebrate fossils from the North Slope of Alaska and implications for dinosaur ecology. Palaios 2:377-389 (https://doi.org/10.2307/3514763)
- ↑1 2 A. R. Fiorillo. 2006. Review of the dinosaur record of Alaska with comments regarding Korean dinosaurs as comparable high-latitude fossil faunas. Journal of the Paleontological Society of Korea 22(1):15-27
- ↑1 2 3 4 H. W. Roehler and G. D. Strickler. 1984. Dinosaur and wood fossils from the Cretaceous Corwin Formation in the National Petroleum Reserve, North Slope of Alaska. Journal of the Alaska Geological Society 4:35-41