Las Cañas plutonic complex: Geodynamic implications during the Famatinian magmatism in northeast of Sierra de San Luis, Argentina

Architecture and kinematics of the Famatinian deformation in the Sierra Grande de San Luis: A record of a collisional history at 33° S latitude

“…The SGSL is composed of about 20% plutonic rocks which have been widely studied and classified (Ortiz Suárez et al, 1992;Llambías et al, 1998;Sato et al, 2003;Brogioni et al, 2005, López de Luchi et al, 2007. Two Paleozoic magmatic events were recognized in the study area; a basic, intermediate and acidic Ordovician magmatism (~475 ± 11 Ma), associated with the development of the Famatinian arc/retro-arc (Sims et al, 1998;Sato et al, 2003;Steenken et al, 2006;Casquet et al, 2014;Morosini et al, 2017Morosini et al, , 2019 and a Devonian (~398 ± 13 Ma)…”

“…The Conlara Metamorphic Complex is located in the eastern sector of the SGSL. It is subdivided into two metamorphic domains (Sims et al, 1997;Morosini et al, 2019;Christiansen et al, 2019), one is predominantly composed by schistose rocks, equivalent to the Las Aguadas Group (Ortiz Suárez, 1988), and the other is predominantly composed by migmatites, named San Martín Group (Enriquez et al, 2015). Las Aguadas Group comprises mid-grade metamorphic rocks (highgreenschist to low-amphibolite facies), which correspond to gneisses, quartz-feldspar schists (banded) and micaceous schists (Ortiz Suárez, 1998;Morosini et al, 2019).…”

“…It is subdivided into two metamorphic domains (Sims et al, 1997;Morosini et al, 2019;Christiansen et al, 2019), one is predominantly composed by schistose rocks, equivalent to the Las Aguadas Group (Ortiz Suárez, 1988), and the other is predominantly composed by migmatites, named San Martín Group (Enriquez et al, 2015). Las Aguadas Group comprises mid-grade metamorphic rocks (highgreenschist to low-amphibolite facies), which correspond to gneisses, quartz-feldspar schists (banded) and micaceous schists (Ortiz Suárez, 1998;Morosini et al, 2019). The San Martín Group comprises rocks of a higher metamorphic grade (high-amphibolite facies) and is mostly composed by migmatites (metatexites and diatexites), orthoamphibolites and to a lesser extent marbles and calc-silicate rocks (Llambías and Malvicini, 1982;Delakowitz et al, 1991;López de Luchi et al, 2003).…”

Shear-assisted water-fluxed melting and AFC processes in the foreland of the Early Paleozoic Famatinian orogen: petrogenesis of leucogranites and pegmatites from the Sierras de Córdoba, Argentina

“…The whole dataset of Famatinian-aged igneous rocks resembles a concave upwards hyperbola with contrasting endmembers, suggesting that mixing, hybridization and/or contamination processes involving mantle-and crustal-derived materials have taken place. Such processes have been proposed by several authors for the Famatinian orogen (Casquet et al 2012;Cristofolini et al 2012;Walker et al 2015;Otamendi et al 2017;Suzaño et al 2017;Rapela et al 2018;Weinberg et al 2018;Morosini et al 2019;Camiletti et al 2020).…”

The Li-Bearing Pegmatites from the Pampean Pegmatite Province, Argentina: Metallogenesis and Resources

“…This sequence underwent a mostly polyphasic medium-grade metamorphism during the Pampean and Famatinian Orogenies of Upper Proterozoic-Lower Paleozoic age [55], and its mica schists and gneisses were denominated Conlara Metamorphic Complex [33]. Intruding this sequence are minor basic, intermediate, or acid orogenic plutons such as Las Cañas [56], El Peñón [57], and S-type minor leucogranitic lenses, many rare-element class LCT pegmatites, mainly of group 1, or beryl and complex types [58], and the most voluminous magmatism that built the postorogenic Potrerillos-Las Chacras-Piedras Coloradas granitic batholith and its associated Nb-Y-F (NYF) pegmatites [32,59].…”