Sekwi Formation Explained

Sekwi Formation
Period:	Cambrian
Type:	Formation
Age:	Fallotaspis, Nevadella, and Bonnia-Olenellus trilobite zones
Region:	Northwest Territories
Country:	Canada
Underlies:	Hess River Formation Rockslide Formation
Overlies:	Vampire Formation Backbone Ranges Formation Ingta Formation (where the above are absent)
Thickness:	700 m

The Sekwi Formation is a geologic formation in Northwest Territories, Canada, which preserves fossils dating back to the Cambrian period.

The formation principally comprises shallow water carbonates, but deepens to include mid-shelf mudstones, both calcareous and siliciclastic.^[1]

It dates from c. 525-510 Ma, the Nevadella / Bonnia-Olenellus trilobite zones.^[2]

See also

• List of fossiliferous stratigraphic units in Northwest Territories

References

• Web site: Fossilworks: Gateway to the Paleobiology Database. ((Various Contributors to the Paleobiology Database)). 17 December 2021.

Notes and References

1. RANDELL . ROBERT D. . LIEBERMAN . BRUCE S. . HASIOTIS . STEPHEN T. . POPE . MICHAEL C. . New Chancelloriids From the Early Cambrian Sekwi Formation With a Comment on Chancelloriid Affinities . Journal of Paleontology . September 2005 . 79 . 5 . 987–996 . 10.1666/0022-3360(2005)079[0987:NCFTEC]2.0.CO;2. 130292492 .
2. 10.1016/j.palaeo.2007.02.031. Stable isotope geochemistry of the lower Cambrian Sekwi Formation, Northwest Territories, Canada: Implications for ocean chemistry and secular curve generation. 2007. Dilliard. K.A.. Pope. M.C.. Coniglio. M.. Hasiotis. S.T.. Lieberman. B.S.. Palaeogeography, Palaeoclimatology, Palaeoecology. 256. 3–4. 174–194.