Great Day Creek Section, Bathurst Island, Unit 12, Blue Fiord Formation: Emsian, Canada
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Stromatoporoidea
- Stromatoporoidea
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Stromatoporoidea indet.
Nicholson and Murie 1878
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Anthozoa
- Favositida
- Favositidae
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Favosites sp.
Lamarck 1816
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Anthozoa
- Favositida
- Pachyporidae
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Thamnopora sp.
Steininger 1831
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Trilobita
- Corynexochida
- Styginidae
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Scutellum depressum
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Trilobita
- Proetida
- Proetidae
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Dechenella paragranulata
Ormiston 1967
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| see common names | |||||||
Geography
| Country: | Canada | State/province: | Nunavut |
| Coordinates: | 76.3° North, 99.0° West (view map) | ||
| Paleocoordinates: | 8.5° South, 19.6° West | ||
| Basis of coordinate: | estimated from map | ||
| Geographic resolution: | outcrop |
Time
| Period: | Devonian | Epoch: | Early Devonian |
| Stage: | Emsian | 10 m.y. bin: | Devonian 2 |
| *International age/stage: | Eifelian | ||
| Key time interval: | Emsian | ||
| Age range of interval: | 407.6 - 393.3 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Blue Fiord | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: "Unit n" [from bottom] is my terminology, not Ormiston's. Unit is 33 feet thick. | |||||
Lithology and environment
| Primary lithology: | red or brown "limestone" | ||
| Lithology description: Section: "On northern Bathurst Island, the B.F. Fm. consists of light to dark brown, finely crystalline, medium-bedded, fossiliferous limestone interbedded with brown, medium to coarsly crystalline, bioclastic limestone and grey calcareous shale." This unit: "Limestone: dark brown, very finely crystalline, med. bedded, fossiliferous..." | |||
| Environment: | shallow subtidal indet. | Tectonic setting: | passive margin |
| Geology comments: Bioherms known from this formation.
SEP: From Rose (1999) Sedimentology and diagenesis of the lower Blue Fiord Formation carbonates in a prospective mississippi valley-type (Pb-Zn) setting, Bathurst Island, N.W.T. Univ. of Calgary MS thesis: "The Devonian Blue Fiord Formation (Emsian-Eifelian) consists of subtidal to supratidal carbonates deposited on a wide platform shelf. It is divided into three informal members based on facies associations; BF (sub 1) (Subtidal Restricted), BF (sub 2) (Lagoonal-Tidal Flat), and BF (sub 3) (Subtidal Open/Restricted). " | |||
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | biostratigraphic analysis |
Metadata
| Database number: | 26613 | ||
| Authorizer: | M. Foote | Enterer: | M. Foote |
| Modifier: | P. Wagner | Research group: | marine invertebrate |
| Created: | 2002-10-18 09:42:19 | Last modified: | 2021-11-14 00:28:16 |
| Access level: | the public | Released: | 2002-10-18 09:42:19 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 7308. | A. R. Ormiston. 1967. Lower and Middle Devonian trilobites of the Canadian arctic islands. Geological Survey of Canada Bulletin 153:1-148 [M. Foote/M. Foote/M. Foote] |