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GEOREF RECORD
Ediacaran remains from intertillite beds in northwestern Canada
H. J. Hofmann, Guy M. Narbonne and J. D. Aitken
Ediacaran remains from intertillite beds in northwestern Canada
Geology (Boulder) (1990) 18 (12): 1199-1202
Ediacaran remains from intertillite beds in northwestern Canada
Geology (Boulder) (1990) 18 (12): 1199-1202
Index Terms/Descriptors
- biostratigraphy
- Canada
- clastic rocks
- Ediacaran
- fossilization
- Mackenzie District Northwest Territories
- Mackenzie Mountains
- Metazoa
- Neoproterozoic
- Northwest Territories
- Precambrian
- problematic fossils
- Proterozoic
- range
- sedimentary rocks
- stratigraphy
- tillite
- turbidite
- upper Precambrian
- Vendian
- Western Canada
- Windermere System
- Vendella
- Irridinitus
- Twitya Formation
- Nimbia occlusa
Latitude & Longitude
Abstract
A turbidite sequence within the Twitya Formation (Windermere Supergroup) in the ackenzie Mountains, northwestern Canada, has yielded an assemblage composed of simple centimetric annuli and discs, which are interpreted as biogenic and referred to Nimbia occlusa Fedonkin, Vendetta? sp., and Irridinitus? sp. They occur below a glaciomarine diamictite about 2.5 km below the base of the Cambrian, and they may represent the oldest Ediacaran fossils now known. The find has implications for models that relate the evolution of the Ediacara fauna to the waning of the Varanger glaciation.
ISSN: 0091-7613
EISSN: 1943-2682
Coden: GLGYBA
Serial Title: Geology (Boulder)
Serial Volume: 18
Serial Issue: 12
Title: Ediacaran remains from intertillite beds in northwestern Canada
Affiliation: Univ. Montreal, Dep. Geol.,
Montreal, QC,
Canada
Pages: 1199-1202
Published: 1990
Text Language: English
Publisher: Geological Society of America (GSA),
Boulder, CO,
United States
References: 31
Accession Number: 1990-060134
Categories: Stratigraphy
Document Type: Serial
Bibliographic Level: Analytic
Annotation: Geol. Surv. Can., Contrib. No. 41189
Illustration Description: illus.
N63°00'00" - N64°00'00", W130°00'00" - W128°00'00"
Secondary Affiliation: Queen's Univ.,
CAN,
CanadaGeol. Surv. Can.,
CAN,
Canada
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute.
Update Code: 1990