Artigo Revisado por pares

Ciclos tectónicos, volcánicos y sedimentarios del Cenozoico del sur de Mendoza-Argentina (35°-37°S y 69°30'W)

2011; National Geology and Mining Service; Volume: 38; Issue: 1 Linguagem: Inglês

ISSN

0718-7092

Autores

Ana María Combina, Francisco E. Nullo,

Tópico(s)

Geological and Geochemical Analysis

Resumo

Cenozoic tectonic, volcanic and sedimentary cycles in southern Mendoza Province, Argentina (35o-37oS y 69o30'W). This article describes the volcanic and sedimentary stratigraphy and their associated proces- ses with the Andean deformation during the Late Cretaceous to Late Pliocene. The studied area is located between the Atuel and Barrancas rivers and the Main Cordillera, in southern Mendoza, Argentina. Three tectovolcano- sedimentary cycles limited by regional discordances (Inca, Quechua, Pehuenche and Diaguita) are proposed. The first comprises Upper Oligocene to Upper Miocene volcanic and sedimentary units (Roca and Pircala-Coihueco formations and the Volcanic Cycle Molle). The second extends from the Late Oligocene to Late Miocene (Agua de la Piedra Formation and the Huincan Andesites volcanic cycle). Finally, the third cycle ranges from the Late Miocene to Pliocene (Butalo, Pincheiras, Loma Fiera and Rio Diamante formations and La Brea Andesites).

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