GSC C-22184, Baillie-Hamilton Island: Sheinwoodian, Canada

Where & when
Geology
Taphonomy & methods
Metadata & references
Geography
Country:Canada State/province:Nunavut
Coordinates: 75.8° North, 94.5° West (view map)
Paleocoordinates:3.5° North, 32.7° West
Basis of coordinate:estimated from map
Geographic resolution:local area
Time
Period:Silurian Epoch:Wenlock
Stage:Sheinwoodian 10 m.y. bin:Silurian 2
Key time interval:Sheinwoodian Zone: Monograptus riccartonensis
Age range of interval:433.40000 - 430.50000 m.y. ago
Stratigraphy
Formation:Cape Phillips
Local section:C Local bed:97.5 ft
Local order:bottom to top
Stratigraphic resolution:formation
Stratigraphy comments: According to author, material is from between the murchisoni and lundgreni zones. This would make it Sheinwoodian, although author simply refers to it as Wenlockian.
Lithology and environment
Primary lithology:shelly/skeletal "limestone"
Secondary lithology: calcareous "shale"
Includes fossils?Y
Lithology description: "..Formation consists of shale and thin bedded, laminated siltstone and limestone...Section [with faunas] broadly divisible into two lithofacies: a lower part about 25 m thick, consists mainly of medium grey, thin bedded argillaceous Lst that is variably dolomitic...and an upper part, about 65 m thick, consisting mainly of very dark grey, very thin bedded argillaceous Lst that is markedly bituminous and commonly planar laminated...These beds appear to represent sediment gravity flows that were derived from platform carbonates...some 10 km to the east. The brachiopods and conodonts were obtained from the bioclastic beds and are therefore presumed to be allochthonous."
Environment:slope Tectonic setting:passive margin
Geology comments: "...Formation...represents the slope-to-basinal facies equivalent of coeval platform carbonates that occur to S and E..."
SEP environmental call based on given info and regional context
Taphonomy
Modes of preservation:replaced with silica
Collection methods and comments
Collection excludes:some macrofossils
Reason for describing collection:taxonomic analysis
Museum repositories:GSC
Collection method comments: Lump this with other 22184
Taxonomic list comments:List in Part I of monograph (PBDB ref. 7205) covers all the brachiopods, whereas the systematic treatment is spread out through three parts (refs. 7205-7207).
Metadata
Also known as:Brachiopods, Cape Phillips Formation,
Database number:26010
Authorizer:M. Foote Enterer:M. Foote
Modifier:P. Wagner Research group:marine invertebrate
Subset of collection #:26003
Created:2002-09-30 15:43:53 Last modified:2006-09-15 15:35:04
Access level:the public Released:2002-09-30 15:43:53
Creative Commons license:CC BY
Reference information

Primary reference:

7205. N. Zhang. 1989. Wenlockian (Silurian) brachiopods of the Cape Phillips Formation, Baillie Hamilton Island, Arctic Canada: part I. Palaeontographica Abteilung A 206(1-3):49-97 [M. Foote/M. Foote/P. Wagner]