494.40 m bed, GSC loc. C167136, Anderson Husky Roros: Late/Upper Albian, Canada
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Lituolida
- Rzehakinidae
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Miliammina manitobensis
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1 specimen | ||||||
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Lituolida
- Lituolidae
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Ammobaculites fragmentarius
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1 specimen | ||||||
| see common names | |||||||
Geography
| Country: | Canada | State/province: | Alberta |
| Coordinates: | 53.0° North, 110.2° West (view map) | ||
| Paleocoordinates: | 52.2° North, 63.3° West | ||
| Basis of coordinate: | estimated from map | ||
| Geographic resolution: | hand sample |
Time
| Period: | Cretaceous | Epoch: | Early/Lower Cretaceous |
| Stage: | Albian | 10 m.y. bin: | Cretaceous 4 |
| Key time interval: | Late/Upper Albian | ||
| Age range of interval: | 106.20000 - 100.50000 m.y. ago |
Stratigraphy
| Geological group: | Colorado | Formation: | Westgate | ||
| Local section: | Anderson Husky Roros | Local bed: | 494.40 m | ||
| Local order: | top to bottom | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Miliammina manitobensis Zone (Caldwell et al., 1978); meters indicate depth at which sample was taken | |||||
Lithology and environment
| Primary lithology: | bioturbation lithified "shale" | ||
| Lithology description: bioturbated shale | |||
| Environment: | offshore | Tectonic setting: | foreland basin |
| Glacial or sequence phase: | transgressive | ||
| Geology comments: extension of Mowry Sea, during late Albian (slight regression in late Late Albian), moderatly to well oxygenated bottom-waters; shallow wave influenced sea of inner nertic to possibly middle neritic depth | |||
Taphonomy
| Size of fossils: | microfossils |
Collection methods and comments
| Collection excludes: | some macrofossils | ||
| Collection methods: | core,chemical,smear slide,field collection | ||
| Minimum sieve size: | 0.020 | Maximum sieve size: | 0.065 |
| Reason for describing collection: | general faunal/floral analysis | ||
| Museum repositories: | GSC | ||
| Collection method comments: foraminiferal analysis utilizing the method of Then and Dougherty (1983) and washed over a 0.065 mm sieve; nannofossils were analyzed using the techniques from Edwards (1963), Stover (1966), Gartner (1968) and Smith (1981); standard acid processing techniques (Barss and Williams, 1973) were used followed by heavy liquid flotation and sieving to concentrate the dinoflagellates in the >0.045 and the 0.020-0.045 mm fractions | |||
| Taxonomic list comments:poorly preserved specimens of foraminifera, which are not unequivocally identifiable, are not included in the total counts | |||
Metadata
| Database number: | 71709 | ||
| Authorizer: | W. Kiessling | Enterer: | T. Schossleitner |
| Modifier: | J. Alroy | Research group: | micropaleontology |
| Created: | 2007-05-07 02:02:59 | Last modified: | 2008-05-24 13:31:44 |
| Access level: | the public | Released: | 2007-05-07 02:02:58 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 23849. | J. D. Bloch, C. J. Schröder-Adams, D.A. Leckie, J. Craig, and D.J. McIntyre. 1999. Sedimentology, micropaleontology, geochemistry and hydrocarbon potential of shale from the cretaceous Lower Colorado Group in Western Canada. Geological Survey of Canada, Bulletin 531:1-185 [W. Kiessling/T. Schossleitner] |