Sekwi Formation
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The Sekwi Formation is a geologic formation in Northwest Territories, Canada, which preserves fossils dating back to the Cambrian period.
TypeFormation
Underlies
- Hess River Formation
- Rockslide Formation
Overlies
- Vampire Formation
- Backbone Ranges Formation
- Ingta Formation (where the above are absent)[2]
Thickness700 m[2]
| Sekwi Formation | |
|---|---|
| Stratigraphic range: ; Fallotaspis, Nevadella, and Bonnia-Olenellus trilobite zones[2] | |
| Type | Formation |
| Underlies |
|
| Overlies |
|
| Thickness | 700 m[2] |
| Location | |
| Region | Northwest Territories |
| Country | Canada |
The formation principally comprises shallow water carbonates, but deepens to include mid-shelf mudstones, both calcareous and siliciclastic.[2]
It dates from c. 525-510 Ma, the Nevadella / Bonnia-Olenellus trilobite zones.[3]
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