Cerro Azul Formation, Geological formation in La Pampa and Buenos Aires provinces, Argentina
The Cerro Azul Formation extends across northeastern Argentina with deposits of fluvial siltstones, sandstones, and volcanic tuffs reaching depths of 180 meters.
Scientists first documented the Cerro Azul Formation in 1980, revealing sediments that formed after the retreat of the Parana Sea 10 million years ago.
Researchers from multiple scientific institutions study this formation to understand Argentina's prehistoric environments through its extensive fossil collection.
Field researchers access the formation through local roads connecting various study sites including Barrancas Coloradas, Cerro Patagua, and Estancia Re.
The formation contains fossils of Argentavis, recognized as the largest flying bird in Earth's history, along with numerous mammal and reptile specimens.
GPS coordinates: -35.70000,-64.70000
Latest update: March 4, 2025 00:42
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