2018
DOI: 10.1080/00206814.2018.1522520
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Multiple metamorphic events in the Palaeozoic Mérida Andes basement, Venezuela: insights from U–Pb geochronology and Hf–Nd isotope systematics

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Cited by 29 publications
(28 citation statements)
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“…The Venezuelan Andes, which include the Merida and Caparo localities, show an Ediacaran-Cambrian basement (~520 Ma; van der Lelij et al, 2016), consisting of high-to low-grade metamorphic rocks. The basement includes amphibolite and greenschist facies from the Iglesias Complex (Sierra Nevada-, Bella Vista-, and Tostos suites; González González de Juana et al, 1980;Bellizzia and Pimentel, 1994;Tazzo-Rangel et al, 2018). The Iglesias complex is intruded by Ordovician-Silurian granitoids (van der Lelij et al, 2016) and is overlain by Ordovician and Pennsylvanian metasedimentary and sedimentary successions from the Caparo-and Mucuchachí formations, which are interlayered by felsite rocks (Bellizzia and Pimentel, 1994).…”
Section: Northern Andesmentioning
confidence: 99%
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“…The Venezuelan Andes, which include the Merida and Caparo localities, show an Ediacaran-Cambrian basement (~520 Ma; van der Lelij et al, 2016), consisting of high-to low-grade metamorphic rocks. The basement includes amphibolite and greenschist facies from the Iglesias Complex (Sierra Nevada-, Bella Vista-, and Tostos suites; González González de Juana et al, 1980;Bellizzia and Pimentel, 1994;Tazzo-Rangel et al, 2018). The Iglesias complex is intruded by Ordovician-Silurian granitoids (van der Lelij et al, 2016) and is overlain by Ordovician and Pennsylvanian metasedimentary and sedimentary successions from the Caparo-and Mucuchachí formations, which are interlayered by felsite rocks (Bellizzia and Pimentel, 1994).…”
Section: Northern Andesmentioning
confidence: 99%
“…A remarkable hiatus between the Devonian and Mississippian deposits caused by tectonic compression and restricted marine circulation (González de Juana et al, 1980) has been documented. The Upper Paleozoic deposits are composed of siliciclastic and carbonate rocks intruded by Permian-Triassic felsitic and mafic rocks (Sabaneta and Palmarito formations; Laya and Tucker, 2012;Tazzo-Rangel et al, 2018;Fig. 2).…”
Section: Northern Andesmentioning
confidence: 99%
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“…Estos segmentos se encuentran dispersados a lo largo de la paleomargen y han sido denominados en estudios anteriores como el Terreno Chibcha (Restrepo y Toussaint, 1989;Restrepo et al, 2009) y recientemente como el Orógeno Putumayo (Ibáñez-Mejía et al, 2011 Al oriente del Orógeno Putumayo, en el Macizo de Santander y los Andes de Mérida, se presenta un bloque dispersado del Orógeno Caperoniense o Famatiniano de edad Paleozoico Inferior (Ordovícico) (Restrepo, 1995;Mantilla-Figueroa et al, 2016) (Figura 1); que se extiende como fragmentos desde Chile hasta Venezuela, en la protomargen occidental de Gondwana (Ramos, 2008;Otamendi et al, 2017). Este orógeno está representado en Colombia, en los macizos de Santander y Quetame, por unidades sedimentarias, metasedimentarias de muy bajo grado, esquistos, neises migmatíticos, paraneises y granitoides de arco sin-tectónicos y pos-tectónicos (Van der Lelij et al, 2016;Mantilla-Figueroa et al, 2016;Tazzo-Rangel et al, 2019), presentando algunas unidades metamorfismo de la facies anfibolita alta y granulita en la cúspide de la orogenia famatiniana (∼470 Ma) (Zuluaga et al, 2017;Tazzo-Rangel et al, 2019). Sobre este bloque, se desarrolló a finales del Tríásico y principios del Jurásico (~214 -184 Ma) (Van der Lelij et al, 2016;Rodríguez et al, 2020), un magmatismo que formó cuerpos batolíticos y stocks de composición predominante monzogranítica a sienogranítica (Ward et al, 1973;Rodríguez et al, 2020), peraluminosos de Tipo I (Rodríguez et al, 2020;Zuluaga y López, 2019), no correlacionables con los plutones Jurásicos que intruyeron el basamento Neo-proterozoico (Rodríguez et al, 2020)…”
Section: Marco Geológicounclassified
“…In this work, we focus on a regional Late Paleozoic -Early Mesozoic first contractional and then extensional orogenic evolution that is widely documented along the Northern Andean continental margin (Fig. 1A; Vinasco et al, 2006a;Cardona et al, 2010b;Villagómez et al, 2011;Van Der Lelij, 2013;Cochrane et al, 2014a;Martens et al, 2014;van der Lelij et al, 2016b;Zuluaga et al, 2017;Spikings and Paul, 2019;Tazzo-Rangel et al, 2019).…”
Section: Introductionmentioning
confidence: 99%