Bayinburuk Formation, Lower Limestone, Nalate Mts., west-central Xinjiang Prov.: Ludlow - Pridoli, China
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
unclassified
|
|||||||
|
Yacutipora tianshanensis
|
|||||||
|
Trilobita
- Phacopida
- Encrinuridae
|
|||||||
|
Encrinuridae indet.
Angelin 1854
|
|||||||
|
Anthozoa
- Favositida
- Favositidae
|
|||||||
|
Mesofavosites khalfini
|
|||||||
|
Dictyofavosites rarus
|
|||||||
|
Favosites gothlandicus
Lamarck 1816
|
|||||||
|
Squameofavosites hejiangites
|
|||||||
|
Anthozoa
- Heliolitida
- Heliolitidae
|
|||||||
|
Heliolites densitabulatus
|
|||||||
| see common names | |||||||
Geography
| Country: | China | State/province: | Xinjiang |
| Coordinates: | 43.1° North, 83.5° East (view map) | ||
| Paleocoordinates: | 6.5° North, 80.2° East | ||
| Basis of coordinate: | based on nearby landmark | ||
| Geographic resolution: | local area |
Stratigraphy
| Formation: | Bayinburuk | ||||
| Stratigraphic resolution: | member | ||||
| Stratigraphy comments: Except where otherwise stated, ref. 7624 uses Lower Silurian as equivalent to Llandovery, Middle Silurian as equivalent to Wenlock, and Upper Silurian as equivalent to Ludlow plus Pridoli. "The presence of Squameofavosites suggests a Ludlow-Pridoli age [for the lower part of formation from which fossils come]." | |||||
Lithology and environment
| Primary lithology: | argillaceous mudstone |
| Secondary lithology: | "limestone" |
| Includes fossils? | Y |
| Lithology description: Formation has two units. "The upper part consists of gray-green, gray-purple tuff, andesitic porphyry, and an uppermost oolitic limestone with corals and trilobites. The thickness of the upper part is 1564 m. The lower part consists of gray-green, gray, massive, tuffaceous sandstone, tuff, graywacke, and phyllitic, argillaceous mudstone interbedded with limestone and andesitic porphyry, and has a total thickness of 953 m. The limestone from the lower part contains [fossil list]..." | |
| Environment: | marine indet. |
| Geology comments: Correlation chart indicates BA 3 for this unit. | |
Taphonomy
Collection methods and comments
| Reason for describing collection: | biostratigraphic analysis |
Metadata
| Database number: | 27733 | ||
| Authorizer: | M. Foote | Enterer: | M. Foote |
| Modifier: | M. Foote | Research group: | marine invertebrate |
| Created: | 2003-01-07 10:09:36 | Last modified: | 2006-09-13 14:01:03 |
| Access level: | the public | Released: | 2003-01-07 10:09:36 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 7624. | E.-z. Mu, A. J. Boucot, X. Chen and J.-y. Rong. 1986. Correlation of the Silurian rocks of China. In A. J. Boucot and W. B. N. Berry (eds.), Geological Society of America Special Paper 202:1-80 [M. Foote/M. Foote/P. Wagner] |