Explaining the exceptional preservation of Ediacaran rangeomorphs from Spaniard's Bay, Newfoundland: A hydraulic model

M.D. Brasier, A.G.S.C. Liu, L.R. Menon, J.J. Matthews, D. Mcilroy, David Wacey

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Exceptional 3-D preservation of Ediacaran rangeomorph fossils is found on a single bedding plane at Spaniard's Bay, Newfoundland. This high-quality preservation has previously been explained by entrainment of organisms within the Td-e mudstone division of a distal turbidite, followed by encasement within concretions. Our sedimentological and taphonomic analysis reveals a clear association between these fossils and evidence for erosive unidirectional flows, including scours marks, tool marks, ridge-and-groove marks, parting lineations and current crescents. We suggest an alternative sequence of events that runs broadly as follows: (i) rangeomorph discs were anchored to the seafloor during deposition of planar laminated silts (our unit 2,
Original languageEnglish
Pages (from-to)122-135
JournalPrecambrian Research
Volume231
DOIs
Publication statusPublished - 2013

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Ediacaran
Hydraulic models
Scour
fossil
hydraulics
bedding plane
concretion
lineation
turbidite
scour
entrainment
mudstone
seafloor
organism
analysis

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Brasier, M.D. ; Liu, A.G.S.C. ; Menon, L.R. ; Matthews, J.J. ; Mcilroy, D. ; Wacey, David. / Explaining the exceptional preservation of Ediacaran rangeomorphs from Spaniard's Bay, Newfoundland: A hydraulic model. In: Precambrian Research. 2013 ; Vol. 231. pp. 122-135.
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Explaining the exceptional preservation of Ediacaran rangeomorphs from Spaniard's Bay, Newfoundland: A hydraulic model. / Brasier, M.D.; Liu, A.G.S.C.; Menon, L.R.; Matthews, J.J.; Mcilroy, D.; Wacey, David.

In: Precambrian Research, Vol. 231, 2013, p. 122-135.

Research output: Contribution to journalArticle

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