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Fermeuse Formation
Geological formation in Canada From Wikipedia, the free encyclopedia
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The Fermeuse Formation is a fossil-bearing Ediacaran geologic formation in Newfoundland.
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Depositional environment
On Bonavista Peninsula the depositional environment was a slope and outer shelf–below photic zone Turbidites probably were the dominant sediment transporters.[5]
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.[5]
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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Paleobiota
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Perspective
On Avalon Peninsula[1] there is low diversity, and includes rare trace fossils, Palaeopascichnus,[6] and Aspidella discs,[7] sometimes in great concentrations.[5]
On Bonavista Peninsula there is higher diversity, including more fronds (rangeomorphs) and better preserved than on Avalon Peninsula.[1]
Color key
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Notes Uncertain or tentative taxa are in small text; |
Petalonamae
Cnidaria
incertae sedis
Ivesheadiomorphs
Ichnogenera
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See also
References
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