Bull Arm Formation
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The Bull Arm Formation is a volcanic
Ediacaran The Ediacaran ( ) is a geological period of the Neoproterozoic geologic era, Era that spans 96 million years from the end of the Cryogenian Period at 635 Million years ago, Mya to the beginning of the Cambrian Period at 538.8 Mya. It is the last ...
formation cropping out in
Newfoundland Newfoundland and Labrador is the easternmost province of Canada, in the country's Atlantic region. The province comprises the island of Newfoundland and the continental region of Labrador, having a total size of . As of 2025 the population ...
, the oldest of the Musgravetown Group, which is made up of Tuff, and various mafic flows.


References

Ediacaran Newfoundland and Labrador {{geologic-formation-stub