Bed 17, Section 6 - Mount Goodenough Fm, Aklavik Range: Barremian, Canada
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Bivalvia
- Pectinida
- Buchiidae
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Aucellina cf. caucasica
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Cephalopoda
- Ammonitida
- Acrioceratidae
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Ancyloceras (Acrioceras) aff. starrkingi
(Anderson 1938)
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Cephalopoda
- Belemnitida
- Belemnitidae
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cf. Acroteuthis sp.
Stolley 1911
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| see common names | |||||||
Geography
| Country: | Canada | State/province: | Northwest Territories |
| Coordinates: | 67.9° North, 135.4° West (view map) | ||
| Paleocoordinates: | 74.1° North, 39.8° West (Wright 2013) | ||
| Basis of coordinate: | stated in text | ||
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Early Cretaceous |
| Stage: | Barremian | 10 m.y. bin: | Cretaceous 2 |
| Key time interval: | Barremian | ||
| Age range of interval: | 125.77 - 121.4 m.y. ago |
Stratigraphy
| Formation: | Mount Goodenough | Member: | Upper | ||
| Local section: | Mount Goodenough Spur | Local bed: | 300 ft | ||
| Local order: | bottom to top | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: 8-9 ft thick siltstone, 287-313 ft from base of section; from Crioceras (Hoplocrioceras) cf. redmoni biozone; classified as "upper member" of "upper shale-siltstone division" in Jeletzky (1958); Jeletzky (1958) and Fowler and Braun (1993) assign this biozone a Barremian age. Considered to be the equivalent of bed 48, section 5. | |||||
Lithology and environment
| Primary lithology: | "cross stratification",planar lamination,fine,gray,red or brown lithified sandstone |
| Includes fossils? | Y |
| Lithology description: Sandstone, medium to dark grey, buff to rusty weathered, fine-grained, hard, massive to blocky in appearance but none the less distinctly cross-bedded and laminated in part. | |
| Environment: | transition zone/lower shoreface |
| Glacial or sequence phase: | regressive |
| Geology comments: Boreal province; nearshore depositional environment; regressive and prograding conditions. | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | selective quarrying,field collection |
| Reason for describing collection: | biostratigraphic analysis |
| Museum repositories: | GSC |
| Collection method comments: Collected by Jeletzky; presumably reposited in GSC collections . | |
| Taxonomic list comments:Collection appears not to be exhaustive. | |
Metadata
| Also known as: | Field No. 19, Bed 17 | ||
| Database number: | 55862 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2005-11-06 20:33:00 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2005-11-06 20:32:59 |
| Creative Commons license: | CC0 | ||
Reference information
Primary reference:
| 15084. | J. A. Jeletzky. 1958. Uppermost Jurassic and Cretaceous rocks of Aklavik Range, Northeastern Richardson Mountains, Northwest Territories. Geological Survey of Canada, Paper 58(2):1-84 [A. Miller/A. Hendy] |