East ridge of Walter Martin Bjerg Unit 4: Griesbachian, Greenland
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Cephalopoda
- Ceratitida
- Ophiceratidae
|
||||||||||
|
Ophiceras commune
(Spath 1930)
|
||||||||||
| abundant | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Greenland |
| Coordinates: | 71.0° North, 23.0° West (view map) |
| Paleocoordinates: | 40.9° North, 22.9° East (Wright 2013) |
| Basis of coordinate: | based on nearby landmark |
Time
| Period: | Triassic | Epoch: | Early Triassic |
| Stage: | Induan | 10 m.y. bin: | Triassic 1 |
| Key time interval: | Griesbachian | ||
| Age range of interval: | 251.902 - 250.5 m.y. ago |
Stratigraphy
| Formation: | Wordie Creek | ||||
| Local section: | D | Local bed: | Unit 4 | ||
| Stratigraphy comments: Upper Griesbachian, based on Ophiceras commune | |||||
Lithology and environment
| Primary lithology: | micaceous,green "shale" |
| Secondary lithology: | calcareous sandstone |
| Lithology description: 5m harder, more micaceous, greenish shales, with thin layers of slightly calcareous reddish weathering sandstone | |
| Environment: | offshore |
Taphonomy
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | surface (in situ),field collection |
| Reason for describing collection: | taxonomic analysis |
Metadata
| Database number: | 48065 | ||
| Authorizer: | A. McGowan | Enterer: | A. McGowan |
| Modifier: | A. McGowan | Research group: | marine invertebrate |
| Created: | 2005-03-11 09:12:54 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2005-03-11 09:12:52 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 12856. | K. Grasmuck and R. Trümpy. 1969. Triassic stratigraphy and general geology of the country around Fleming Fjord. Meddeleser om Grønland 168(2):1-77 [A. McGowan/A. McGowan/M. Clapham] |