Artículo
The rise and fate of a long-lived deep crustal ‘hot zone’ beneath the neogene-quaternary Cordillera de San Buenaventura in the Southern Puna Plateau (NW Argentina)
Bardelli, Lorenzo
; Lucci, F.; Arnosio, José Marcelo; Bustos, Emilce
; Becchio, Raul Alberto
; Filipovich, Ruben Eduardo
; Villagrán, Carla Agustina
; Viramonte, Jose German
Fecha de publicación:
11/2022
Editorial:
Taylor & Francis
Revista:
International Geology Review
ISSN:
0020-6814
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Arc magmatism plays a key-role in the growth and differentiation of continental crust. In particular, the prolonged magmatic flux events control the genesis of deep crustal hot zones where magma accumulation and fractionation favour the continental arc crust evolution and geochemical stratification. In this view long-lived magmatic systems located in arc domains, with their erupted products spanning from basalts to rhyolites are formidable archive for the understanding the evolution of transcrustal magmatic plumbing systems and the construction of a stratified continental crust. This study focuses on the long-lived (ca. 9 Ma) Miocene-Holocene Cordillera de San Buenaventura volcanic system in the Southern Puna Plateau (NW Argentina), a unique natural laboratory where exploring the building up of MASH-zones (or deep crustal ‘hot zones’) and related sustained volcanism. Synthesis of new and published data, together with new thermobarometry and fractional crystallization modelling, indicates a cyclic scenario with mantle melts undergoing fractional crystallization dominated incipient and waning stages alternate to major mafic magma recharge events during the building up phase of the MASH-zone. This magmatic scenario is also discussed in the light of the coeval geodynamic framework dominated by the subduction of the Nazca plate and the eastward migration of the frontal arc magmatism.
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Articulos(CCT - SALTA-JUJUY)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - SALTA-JUJUY
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - SALTA-JUJUY
Articulos(IBIGEO)
Articulos de INST.DE BIO Y GEOCIENCIAS DEL NOA
Articulos de INST.DE BIO Y GEOCIENCIAS DEL NOA
Citación
Bardelli, Lorenzo; Lucci, F.; Arnosio, José Marcelo; Bustos, Emilce; Becchio, Raul Alberto; et al.; The rise and fate of a long-lived deep crustal ‘hot zone’ beneath the neogene-quaternary Cordillera de San Buenaventura in the Southern Puna Plateau (NW Argentina); Taylor & Francis; International Geology Review; 65; 15; 11-2022; 2447-2478
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