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Revista de la Asociación Geológica Argentina
versão impressa ISSN 0004-4822
Resumo
MARVEGGIO, Nilda e LLORENS, Magdalena. Nueva edad de la base del grupo Chubut en la mena uranífera Cerro Solo, provincia del Chubut. Rev. Asoc. Geol. Argent. [online]. 2013, vol.70, n.3, pp.318-326. ISSN 0004-4822.
This paper analyzes the lithological characteristics of the uranium mineralization host rocks from Cerro Solo reservoir, corresponding to the lower member of the Los Adobes Formation, basal unit of the Chubut Group in its northern sector. The angiosperm pollen association there recovered is analyzed. According with this analysis, an early Albian age for the pollen association is established, that determines a younger age than that considered until now for the beginning of deposition of the Chubut Group sediments at the Cerro Solo reservoir depocentre.
Palavras-chave : Los Adobes Formation; Tricolpate pollen; Albian; Patagonia.