2012
DOI: 10.5027/andgeov39n1-a07
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Tectonostratigraphic analysis of the Late Triassic-Early Jurassic syn-rift sequence of the Neuquen Basin in the Sanico depocentre, Neuquen Province, Argentina

Abstract: ABSTRAcT. The initial syn-rift infill (Upper Triassic-Lower Jurassic) of the Neuquén Basin involved a complex stacking of lava, pyroclastic and sedimentary units, in which volcanic rocks compose up to 72% of the infill. The high-quality outcrops of the southern Sañicó depocentre, which was uplifted and exposed during the Andean orogeny, were studied in order to determine the lithofacies arrangements, the tectonostratigraphic framework and the main controls over the syn-rift succession. The tectonostratigraphic… Show more

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Cited by 20 publications
(29 citation statements)
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References 70 publications
(94 reference statements)
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“…To the east, the North Patagonian Precordillera presents two contrasting sectors: a western zone where Oligocene to Miocene deposits are openly folded, and an eastern sector where Triassic depocenters and their Paleozoic basement are thrust on top of Paleogene to Neogene successions (Franzese and Spalletti, 2001;D'Elia et al, 2012;Bilmes et al, 2013). In this zone, Paleogene volcanic rocks are subdivided according to their age and facies distribution into an extra-Andean association in the east (Pilcaniyeu volcanic belt) with Paleocene to Eocene ages, and an Andean association to the west (Maitén volcanic belt), with Oligocene to early Miocene ages (Feruglio, 1941;Ramos, 1982;Rapela et al, 1983Rapela et al, , 1988).…”
Section: Accepted Manuscriptmentioning
confidence: 99%
“…To the east, the North Patagonian Precordillera presents two contrasting sectors: a western zone where Oligocene to Miocene deposits are openly folded, and an eastern sector where Triassic depocenters and their Paleozoic basement are thrust on top of Paleogene to Neogene successions (Franzese and Spalletti, 2001;D'Elia et al, 2012;Bilmes et al, 2013). In this zone, Paleogene volcanic rocks are subdivided according to their age and facies distribution into an extra-Andean association in the east (Pilcaniyeu volcanic belt) with Paleocene to Eocene ages, and an Andean association to the west (Maitén volcanic belt), with Oligocene to early Miocene ages (Feruglio, 1941;Ramos, 1982;Rapela et al, 1983Rapela et al, , 1988).…”
Section: Accepted Manuscriptmentioning
confidence: 99%
“…En los últimos años, estudios de superficie y subsuelo han caracterizado la distribución, estilo estructural y la estratigrafía de algunos de los depocentros iniciales (Manceda y Figueroa, 1995;Vergani et al, 1995;Franzese y Spalletti, 2001;Franzese et al, 2006;Cristallini et al, 2006;Franzese et al, 2007;Llambías et al, 2007;Giambiagi et al, 2008a;Giambiagi et al, 2008b;Giambiagi et al, 2008c;Muravchik et al, 2008;Pángaro et al, 2009;Muravchik et al, 2011;D'Elia et al, 2012). El sector austral de la Cuenca Neuquina es el que cuenta con el mayor número y mejor calidad de exposición para los estudios de superficie.…”
Section: Marco Geológicounclassified
“…El depocentro de Sañicó se muestra como un hemigraben invertido de ca. 25 km de ancho y 8,5 km de longitud mínima (Muravchik, et al, 2008;D'Elia et al, 2012). El relleno correspondiente al Ciclo Precuyano se presenta con espesores variables desde 50 a FIG.…”
Section: Fig 1 Distribución De Los Depocentros Iniciales De La Cuencaunclassified
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