Fermeuse Formation | |
---|---|
Stratigraphic range: | |
![]() Beds of the Fermeuse Formation near Ferryland, NL; note
Aspidella discs | |
Type | Formation |
Unit of | St John's Group [1] |
Underlies | Renews Head Formation [2] |
Overlies | Trepassey Formation |
Location | |
Region | Newfoundland and Labrador |
Country | Canada |
![]() Occurrence of Fermeuse formation in southeast Newfoundland |
The Fermeuse Formation is a fossil-bearing Ediacaran geologic formation in Newfoundland.
On Avalon Peninsula [1] there is low diversity, and includes rare trace fossils, Palaeopascichnus, [3] and Aspidella discs, sometimes in great concentrations. [4]
On Bonavista Peninsula there is higher diversity, including more fronds ( rangeomorphs) and better preserved than on Avalon Peninsula. [1]
On Bonavista Peninsula the depositional environment was a slope and outer shelf–below photic zone Turbidites probably were the dominant sediment transporters. [4]
It is predominantly silts and sands, in contrast to underlying Trepassey Formation, which is mostly dark grey shales. There is a coarsening up sequence throughout the two formations, such that the top of the Fermeuse is predominantly sandstones. [4]
On Avalon Peninsula there were much shallower waters, particularly than in underlying Mistaken Point Formation and Trepassey Formation. [1] It is indicated by sandy channel fills, slumping, occasional silts. [1] There is a possible delta front and shallow slope setting. [1]
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Fermeuse Formation | |
---|---|
Stratigraphic range: | |
![]() Beds of the Fermeuse Formation near Ferryland, NL; note
Aspidella discs | |
Type | Formation |
Unit of | St John's Group [1] |
Underlies | Renews Head Formation [2] |
Overlies | Trepassey Formation |
Location | |
Region | Newfoundland and Labrador |
Country | Canada |
![]() Occurrence of Fermeuse formation in southeast Newfoundland |
The Fermeuse Formation is a fossil-bearing Ediacaran geologic formation in Newfoundland.
On Avalon Peninsula [1] there is low diversity, and includes rare trace fossils, Palaeopascichnus, [3] and Aspidella discs, sometimes in great concentrations. [4]
On Bonavista Peninsula there is higher diversity, including more fronds ( rangeomorphs) and better preserved than on Avalon Peninsula. [1]
On Bonavista Peninsula the depositional environment was a slope and outer shelf–below photic zone Turbidites probably were the dominant sediment transporters. [4]
It is predominantly silts and sands, in contrast to underlying Trepassey Formation, which is mostly dark grey shales. There is a coarsening up sequence throughout the two formations, such that the top of the Fermeuse is predominantly sandstones. [4]
On Avalon Peninsula there were much shallower waters, particularly than in underlying Mistaken Point Formation and Trepassey Formation. [1] It is indicated by sandy channel fills, slumping, occasional silts. [1] There is a possible delta front and shallow slope setting. [1]
{{
cite journal}}
: Cite journal requires |journal=
(
help)[
dead link]