Torok Formation
The Torok Formation is a geologic formation in the National Petroleum Reserve in Alaska (NPR-A). It preserves fossils dating back to the Cretaceous period.
| Torok Formation | |
|---|---|
| Stratigraphic range: Cretaceous | |
| Type | Formation |
| Location | |
| Region | Alaska |
| Country | United States |
Geology
The Torok Formation together with the Nanushuk Formation forms a huge wedge of sediment deposited in a deep water basin and stretch from north of the Brooks Range beneath the Alaska North Slope to the adjacent offshore. It contains reservoirs in turbidite sandstone. The USGS found large-scale folds and faults in the South of the formation and evidence, that the rocks have been heated to temperatures at which oil is converted to natural gas.[1]
References
- David W. Houseknecht, Richard O. Lease, Christopher J. Schenk, Tracey J. Mercier, William A. Rouse, Palma J. Botterell, Katherine J. Whidden, Christopher P. Garrity, Kristen A. Lewis, Samuel J. Heller, William H. Craddock, Timothy R. Klett, Phuong A. Le, Rebecca A. Smith, Marilyn E. Tennyson, Stephanie B. Gaswirth, Cheryl A. Woodall, Michael E. Brownfield, Heidi M. Leathers-Miller, Thomas M. Finn (2017). "Assessment of undiscovered oil and gas resources in the Cretaceous Nanushuk and Torok Formations, Alaska North Slope, and summary of resource potential of the National Petroleum Reserve in Alaska, 2017". U.S. Geological Survey. doi:10.3133/fs20173088.
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- Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.
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