Vampire Formation
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| Vampire Formation | |
|---|---|
Stratigraphic range: | |
| Type | Geological formation |
| Underlies | Sekwi Formation |
| Overlies | Ingta Formation |
| Thickness | up to |
| Location | |
| Location | Mackenzie Mountains |
| Region | File:Flag of the Northwest Territories.svg Northwest Territories |
| Country | File:Flag of Canada (Pantone).svg Canada |
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The Vampire Formation is a formation of delta-front siliciclastics deposited in the early Cambrian. The upper unit is trilobitic Cambrian.[1] Some authors place the underlying Ingta formation at least partially in the Cambrian; in places it overlies the sub-Cambrian unconformity.[2]
It contains a rich array of trace fossils spanning the pre-trilobitic Cambrian,[3] including some found only there (once interpreted as sponge-like forms);[4] its uppermost strata contain Fallotaspis-zone trilobites, whereas its lower levels come above Protohertzina and Anabarites-bearing shelly layers in the Ingta formation; as such, it spans much of the Fortunian.[5]
References
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