Bull Arm Formation

Bull Arm Formation Stratigraphic range: Ediacaran PreЄ Є O S D C P T J K Pg N
Type	Formation
Unit of	Musgravetown Group
Underlies	Big Head Formation, Rocky Harbour Formation
Overlies	Cannings Cove Formation
Lithology
Primary	Volcanics
Location
Region	Newfoundland
Country	Canada
Occurrence of the Bull Arm Formation in southeastern Newfoundland

The Bull Arm Formation is a volcanic formation cropping out in Newfoundland, the youngest of the Musgravetown Group. It is defined as everything between the first and last volcanic horizon, with a recognition that some sandstones will be interbedded, and its start and finish may vary across the region depending on how widespread volcanic horizons are in practice.