Pisco Formation, Geological formation in Ica and Arequipa, Peru
The Pisco Formation is a geological structure along Peru's southern coastal desert composed of marine sediment layers including sandstone and siltstone. The formation spans significant distances across the landscape and reveals the structure of an ancient ocean floor.
The formation developed between roughly 10 and 4 million years ago when this coastal area lay beneath a shallow sea. The sediment layers accumulated in this marine environment and now shape the landscape we see today.
The site attracts researchers from around the world who study fossils here to learn about ancient ocean life. This research work helps us understand how marine animals changed over millions of years.
Access to this geological formation is available through various points in the Ica and Arequipa regions where visitors can observe the exposed layers and structures. Guided excursions with experts help visitors understand the geological features and scientific importance of the site.
The formation holds fossils from over 500 whales and other marine mammals, including remains of Livyatan, a giant extinct sperm whale. This exceptional collection makes the site one of the richest marine mammal fossil deposits in the world.
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