Charco Azul Formation

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 / 8.5; -82.8
Approximate paleocoordinates	8.3°N 82.2°W / 8.3; -82.2
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

See also

• Earth sciences portal
• Costa Rica portal
• Panama portal
• Paleontology portal

• List of fossiliferous stratigraphic units in Costa Rica
• List of fossiliferous stratigraphic units in Panama