Beaver Dam Mountains BM1, Bed 20: Spathian, Utah
Where & when
Geology
Taphonomy & methods
Metadata & references
Geography
| Country: | United States | State/province: | Utah | County: | Washington |
| Coordinates: | 37.1° North, 113.8° West (view map) | ||||
| Paleocoordinates: | 8.1° North, 39.5° West | ||||
| Basis of coordinate: | unpublished field data | ||||
| Geographic resolution: | small collection |
Time
| Period: | Triassic | Epoch: | Early Triassic |
| Stage: | Olenekian | 10 m.y. bin: | Triassic 1 |
| Key time interval: | Spathian | ||
| Age range of interval: | 248.9 - 247.2 m.y. ago |
Stratigraphy
Lithology and environment
| Primary lithology: | current ripples,lag lithified calcareous siltstone |
| Includes fossils? | Y |
| Lithology description: Fissile calcareous siltstone with more calcareous beds, fine scale ripples and cross cutting channels, slumping at the top. Some thin beds of coarser material with small indet. Bivalve fossils. Some calcareous nodules, some continuous beds. | |
| Environment: | carbonate indet. |
Taphonomy
| Modes of preservation: | body,mold/impression |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | surface (in situ),field collection |
| Reason for describing collection: | taxonomic analysis |
Metadata
| Database number: | 62979 | ||
| Authorizer: | A. McGowan | Enterer: | A. McGowan |
| Modifier: | M. Clapham | Research group: | marine invertebrate |
| Created: | 2006-08-02 04:35:41 | Last modified: | 2013-03-28 13:54:37 |
| Access level: | the public | Released: | 2006-08-02 04:35:41 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 18152. | A. J. McGowan, A. B. Smith, and P. D. Taylor. 2009. Faunal diversity, heterogeneity and body size in the Early Triassic: testing post-extinction paradigms in the Virgin Limestone of Utah, USA. Australian Journal of Earth Sciences 56:859-872 [A. McGowan/A. McGowan/M. Clapham] |