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https://revista.geologica.org.ar/raga/article/view/1799 Stratigraphy and geochronology of the Naupa Huen Formation: implications for the North Patagonian... of the naupa huen stratigraphy geochronology formation https://www.realpatagonia.com.ar/naupa-huen/ Naupa Huen - Real Patagonia naupa huen real patagonia