Dating the Triassic continental rift in the southern Andes: the Potrerillos Formation, Cuyo Basin, Argentina
Spalletti, L.A.; Fanning, Christopher; Rapela, Carlos W
The Triassic successions of western Argentina commonly show thin pyroclastic levels intercalated within thick fluvial and lacustrine terrigenous deposits. The Potrerillos Formation is the thickest Triassic unit in the Cuyo Basin. It is composed of alternating cycles of gravelly- sandy- and muddy-dominated intervals, in which several laterally-continuous tuff horizons occur. U-Pb SHRIMP ages were determined on zircon grains from three tuff levels located between the lowermost and the middle...[Show more]
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