Conception Group

The Conception Group is a geologic group in Newfoundland and Labrador. It preserves fossils dating back to the Ediacaran period. It mainly contains turbidites, but is interrupted by a glacial diamictite, and tops out with sand and siltstones (these dated to 565 Ma).^[1] It corresponds to the lower portion of the Connecting Point Group.^[3]

TypeGroup

Sub-units^[2][3]

• Mistaken Point Formation
  • Murphy's Cove Member
  • Goodland Point Member
• Briscal Formation (in south Avalon only)
• Drook Formation
  • contains a number of members and a gabbro intrusion
• Gaskiers Formation (in south/central Avalon only)
• Mall Bay Formation (in south Avalon only)

UnderliesSt. John's Group^[4]

OverliesHarbour Main Group (unconformably?); Holyrood Intrusive Suite^[3]

Quick facts Type, Sub-units ...

Conception Group
Stratigraphic range: 600–565 Ma[1] (approx.) PreꞒ Ꞓ O S D C P T J K Pg N
Type	Group
Sub-units	[2][3] Mistaken Point Formation Murphy's Cove Member Goodland Point Member Briscal Formation (in south Avalon only) Drook Formation contains a number of members and a gabbro intrusion Gaskiers Formation (in south/central Avalon only) Mall Bay Formation (in south Avalon only)
Underlies	St. John's Group[4]
Overlies	Harbour Main Group (unconformably?); Holyrood Intrusive Suite[3]
Location
Region	Newfoundland and Labrador
Country	Canada
Bedrock occurrence of the Conception Group on the Avalon Peninsula, Newfoundland

Close

In some areas the Drook Formation continues from the base of the group to the base of the Mistaken Point Formation; elsewhere (in central / south Avalon) the Briscal, Gaskiers and Mall Bay Formations wedge in.^[3]