Pacacua Formation

{{short description|Geologic formation in Costa Rica}}

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| name = Pacacua Formation

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| type = Formation

| period = Oligocene

| age = Oligocene

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| country = Costa Rica

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The Pacacua Formation is a geologic formation in Costa Rica. It preserves fossils dating back to the Paleogene period.{{Cite journal |last=A |first=Teresita Aguilar |date=1984 |title=Presencia de esponjas (Porifera) en el Oligoceno de Costa Rica (Valle Central) |url=https://revistas.ucr.ac.cr/index.php/geologica/article/view/10467 |journal=Revista geológica de América central |language=es |volume=1 |doi=10.15517/rgac.v0i01.10467 |issn=2215-261X|doi-access=free }}