Charco Azul Formation
Geologic formation in Costa Rica and Panama
From Wikipedia, the free encyclopedia
Charco Azul Formation is a geologic formation of the Charco Azul Group in western Panama and southeastern Costa Rica. It preserves gastropod fossils dating back to the Pliocene period.[1]
| Charco Azul Formation | |
|---|---|
| Stratigraphic range: Pliocene | |
| Type | Formation |
| Unit of | Charco Azul Group |
| Underlies | Armuelles Formation |
| Lithology | |
| Primary | Shale |
| Other | Tuff |
| Location | |
| Coordinates | 8.5°N 82.8°W |
| Approximate paleocoordinates | 8.3°N 82.2°W |
| Region | Chiriquí Province |
| Country | Costa Rica, Panama |
| Type section | |
| Named for | Charco Azul |
  Charco Azul Formation (Panama) | |
Description
The Charco Azul Formation comprises tuffaceous shales deposited in a deep marine environment The formation unconformably underlies the Armuelles Formation. The formation is correlated to the Jama and Canoa Formations of Ecuador.[1]
Fossil content
These fossils have been reported from the formation:[1]
- Strombina (Recurvina) penita, Strombina (Recurvina) recurva
- Distorsio decussata
- Marsupina bufo, M. nana
