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Albian zircon U-Pb crystallization ages from tuff beds in the Candeleros and Huincul formations, Neuquén Basin, Argentina
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DOI：10.1016/j.gr.2026.06.020.png)
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Abstract
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• The dinosaur-rich Candeleros and Huincul Formations are early Albian in age rather than Cenomanian. • This adjustment in age impacts the genus richness patterns of fossils for the Cretaceous of South America and aligns it with the rest of the world. • The new age confirms the diachronous (northward-younging) development of fold-thrust belts along the compressive Andean margin.
Keywords:
Zircon U-Pb geochronology
Maximum depositional age
Neuquén Group
Fold and thrust belt
Fossil richness
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