Abstract

DAHLQUIST, Juan A  and  ALASINO, Pablo H. First age U-Pb zircon LA-ICP-MS from trachyandesitic dyke emplaced in the A-type Los Árboles pluton, Eastern Sierras Pampeanas. Rev. Asoc. Geol. Argent. [online]. 2012, vol.69, n.2, pp.296-299. ISSN 0004-4822.

The crystallization age of subvolcanic dykes emplaced in Carboniferous granitic plutons of the Sierras Pampeanas Orientales remains uncertain. The first age precise U-Pb zircon LA-ICP-MS obtained from a dyke emplaced in the Los Árboles pluton (Sierra de Fiambalá) yield a crystallization age of 311 ± 3 Ma.

Keywords : Subvolcanic dykes; U-Pb LA-ICP-MS on zircon.

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