Vampire Formation

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]

Vampire Formation
Stratigraphic range: Cambrian PreꞒ Ꞓ O S D C P T J K Pg N
Type	Geological formation
Underlies	Sekwi Formation
Overlies	Ingta Formation
Thickness	up to
Location
Location	Mackenzie Mountains
Region	Northwest Territories
Country	Canada

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]