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
TypeFormation
Unit ofCharco Azul Group
UnderliesArmuelles Formation
Lithology
PrimaryShale
OtherTuff
Location
Coordinates8°30′N 82°48′W / 8.5°N 82.8°W / 8.5; -82.8
Approximate paleocoordinates8°18′N 82°12′W / 8.3°N 82.2°W / 8.3; -82.2
RegionChiriquí Province
Country Costa Rica
 Panama
Type section
Named forCharco Azul
Charco Azul Formation is located in Panama
Charco Azul Formation
Charco Azul Formation (Panama)

Description

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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

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These fossils have been reported from the formation:[1]

See also

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References

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Further reading

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  • P. Jung. 1989. Revision of the Strombina-group (Gastropoda; Columbellidae), fossil and living. Schweierische Paläontologische Abhandlungen 111:1-298