Kanguk Formation

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Kanguk Formation
Stratigraphic range: Cenomanian-Maastrichtian
~99–66 Ma
TypeGeological formation
Sub-unitsEglinton Member
UnderliesExpedition Formation
OverliesHassel Formation
Thicknessup to 365 metres (1,200 ft)[1]
Lithology
PrimaryShale, siltstone
OtherSandstone, tuff
Location
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RegionNorthwest Territories, Nunavut
CountryCanada
Type section
Named forKanguk Peninsula
Named bySouther
Year defined1963

The Kanguk Formation is a geological formation in the Northwest Territories and Nunavut, Canada whose strata date back to the Late Cretaceous.[2] Dinosaur remains are among the fossils that have been recovered from the formation.[3]

It was first described in the Kanguk Peninsula of the Axel Heiberg Island, along the shore of the Stand Fiord by Souther in 1963.[4] The formation occurs throughout the Sverdrup Basin and the southern Queen Elizabeth Islands.

Lithology

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The Kanguk Formation is composed of dark shale and siltstone with interbeds of sandstone, bentonite and tuff.[1] Thicker sandstone and conglomerate beds occur in the western reaches in Eglinton Island.

Fossil content

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The Kanguk Formation preserves an extensive record of shelf assemblages rich in benthic foraminifera that reveal numerous pulses of local hypoxia.[5] Fish fossils have been unearthed here.[6]

Dinosaurs of the Kanguk Formation
Genus Species Location Stratigraphic position Abundance Description Images
Canadaga C. arctica A Hesperomithes
Hesperornis[3] Indeterminate[3]
File:Hesperornis BW (white background).jpg
Hadrosauridae[7][8][9] Indeterminate
Lambeosaurinae[10][11] Indeterminate
Tyrannosauroidea[10] Indeterminate
Ornithomimidae[12] Indeterminate
Plesiosauroidea[13] Indeterminate
Aurorachelys[14][15] A. gaffneyi
Champsosaurus[16][17] Champsosaurus sp.

See also

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References

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  3. ^ a b c Weishampel, David B; et al. (2004). "Dinosaur distribution (Late Cretaceous, North America)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. Pp. 574-588. Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value)..
  4. ^ Geological Survey of Canada Map 36-1959
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Further reading

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  • A. T. Pugh, C. J. Schröder-Adams, E. S. Carter, J. OHerrle, J. Galloway, J. W. Haggart, J. L. Andrews and K. Hatsukanoc. 2014. Cenomanian to Santonian radiolarian biostratigraphy, carbon isotope stratigraphy and paleoenvironments of the Sverdrup Basin, Ellef Ringnes Island, Nunavut, Canada. Palaeogeography, Palaeoclimatology, Palaeoecology 413:101-122
  • J. A. Tarduno, D. B. Brinkman, P. R. Renne, R. D. Cottrell, H. Scher and P. Castillo. 1998. Evidence for extreme climatic warmth from Late Cretaceous Arctic vertebrates. Science 282:2241-2244
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