Collón Curá Formation, Geological formation in Neuquén Province, Argentina.
The Collón Curá Formation extends across northwestern Patagonia with exposures throughout southern Neuquén Province, western Río Negro Province, and northern Chubut Province.
The formation was identified in 1899 by Roth who described grey tuffs in the Collón Curá River valley before Yrigoyen formally named it in 1969.
Scientists from Argentina and international institutions conduct research at the formation to study fossils, stratigraphy, and geological evolution patterns.
The formation reaches 300 meters in thickness and contains tuffs, sandstones, siltstones, marls, limestones, and pumice deposits across multiple locations.
The formation contains fossils of the snake Waincophis australis and terror bird Kelenken guillermoi, dating from 16.1 to 10.7 million years ago.
Location: Neuquén Province
GPS coordinates: -40.00000,-70.80000
Latest update: April 2, 2025 06:38
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