GSC C-118569, Cascade Peninsula: Late Valanginian, Canada
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Bivalvia
- Pectinida
- Buchiidae
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Buchia crassicollis
(Keyserling 1846)
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| Buchia crassicollis var. solida | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Canada | State/province: | British Columbia |
| Coordinates: | 49.4° North, 121.8° West (view map) | ||
| Paleocoordinates: | 46.9° North, 68.8° West | ||
| Basis of coordinate: | stated in text | ||
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Early Cretaceous |
| Stage: | Valanginian | 10 m.y. bin: | Cretaceous 1 |
| Key time interval: | Late Valanginian | Other zone: | Buchia crassicollis |
| Age range of interval: | 139.8 - 132.6 m.y. ago |
Stratigraphy
| Formation: | Brokenback Hill | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Abundant fossils found in sandstone and tuff of Brokenback Hill Formation. The Brokenback Hill Fm ranges from upper Valanginian to middle Albian in age. All colllections have relatively fine temporal resolution however due to ammonite biostratigraphy. SPECIFIC AGE DATA: Same as for GSC C-117401. Some part of Buchia crassicollis zone and upper Valanginian in terms of international standard stages (see Jeletzky, 1965). | |||||
Lithology and environment
| Primary lithology: | tuffaceous sandstone |
| Secondary lithology: | tuff |
| Includes fossils? | Y |
| Includes fossils? | Y |
| Lithology description: SPECIFIC DATA: green sandstone; GENERAL INFORMATION: The Brokenback Fm is mainly green crystal tuff, volcanic conglomerate, and tuffaceous sandstone. | |
| Environment: | offshore |
| Geology comments: Relatively deep water conditions, quiet water, soft substrate, some wave action, occasional ripple marks, fairly proximal volcanic source. | |
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: Collections made in 1985by A.J. Arthur and P.L. Smith; collections reposited in the GSC. | |
| Taxonomic list comments:Authoritative nomeclature. | |
Metadata
| Also known as: | MVA(F)85-148 | ||
| Database number: | 57077 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy |
| Modifier: | M. Clapham | Research group: | marine invertebrate |
| Created: | 2005-12-01 22:24:12 | Last modified: | 2017-04-09 00:01:52 |
| Access level: | the public | Released: | 2005-12-01 22:24:12 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 15416. | A. J. Arthur, P. L. Smith, J. W. H. Monger and H. W. Tipper. 1993. Mesozoic stratigraphy and Jurassic paleontology west of Harrison Lake, southwestern British Columbia. Geological Survey of Canada Bulletin 441:1-62 [A. Miller/A. Hendy/M. Clapham] |