Bull Arm Formation

Bull Arm Formation
Bull Arm Formation
Stratigraphic range: Ediacaran PreꞒ Ꞓ O S D C P T J K Pg N
Type	Formation
Unit of	Musgravetown Group
Underlies	Big Head Formation
Lithology
Primary	Tuff
Location
Region	Newfoundland
Country	Canada
	; Occurrence of the Bull Arm Formation in southeastern Newfoundland

Last updated September 23, 2025

The Bull Arm Formation is a volcanic Ediacaran formation cropping out in Newfoundland, the oldest of the Musgravetown Group, which is made up of Tuff, and various mafic flows.^[1]

References

1 2 3 "GEOLOGY OF THE AVALON PENINSULA, NEWFOUNDLAND" (PDF).

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[GotAPN-1] 1 2 3 "GEOLOGY OF THE AVALON PENINSULA, NEWFOUNDLAND" (PDF).

[1]

Bull Arm Formation
Stratigraphic range: Ediacaran PreꞒ Ꞓ O S D C P T J K Pg N
Type	Formation
Unit of	Musgravetown Group
Underlies	Big Head Formation ^[1]
Lithology
Primary	Tuff ^[1]
Location
Region	Newfoundland
Country	Canada
Occurrence of the Bull Arm Formation in southeastern Newfoundland