Bukachacha Formation
Geological formation in Russia
From Wikipedia, the free encyclopedia
The Bukachacha Formation is a geological formation in Zabaykalsky Krai, Russia dating to the Early Cretaceous (Barremian). The tuffaceous mudstones of the formation were deposited in a lacustrine environment.
| Bukachacha Formation | |
|---|---|
| Stratigraphic range: Barremian ~ | |
| Type | Geological formation |
| Lithology | |
| Primary | Mudstone |
| Other | Tuff |
| Location | |
| Coordinates | 53.0°N 116.9°E |
| Approximate paleocoordinates | 56.7°N 114.9°E |
| Region | Zabaykalsky Krai |
| Country | Russia |
| Type section | |
| Named for | Bukachacha |
  Bukachacha Formation (Russia) | |
Fossil content
The formation has provided fossil insects:[1]
- Coleoptera
- Coptoclavidae
- Stygeonectes jurassicus[2]
- Coptoclavidae
- Trichoptera
- Phryganeidae
- Proagrypnia sp.[3]
- Phryganeidae
- Ephemerida
- Hexagenitidae
- Ephemeropsis trisetalis[4]
- Hexagenitidae
See also
- List of fossiliferous stratigraphic units in Russia
- Batylykh Formation, contemporaneous fossiliferous formation of Buryatia