The genesis of Permian magmatism in southern South America is actively debated,
particularly in relation to the origin of Patagonia. U–Pb zircon ages of c. 255 Ma for igneous …

Prahuaniyeu, located on the NW margin of the Somoncura Large Igneous Province in
northern Patagonia, is one of two known localities in Argentina where mantle-derived garnet …

Two main lines of evidence disagree whether or not the Patagonian blocks collided with
Gondwana. All models invoke the voluminous magmatism of the La Esperanza Complex as …

New insights on the Paleozoic evolution of the continental crust in the North Patagonian
Massif are presented based on the analysis of Sm–Nd systematics. New evidence is …

Structural analyses in the northern part of the North Patagonia Massif, in the foliated Caita
Có granite and in La Seña and Pangaré mylonites, indicate that the pluton was intruded as a …

La Hoja Geológica 4169-II, LOS MENUCOS, está situada en el sector central de la provincia
de Río Negro. Las unidades geológicas que están representadas en ella incluyen …

A detailed quantitative analysis of bivalves and gastropods reported from Danian marine
rocks of Patagonia (Argentina) allowed the identification of three molluscan biogeographic …

Abstract The La Esperanza plutonic-volcanic complex is the largest Late Paleozoic-Early
Triassic composite magmatic system of northern Patagonia. This paper reports new SHRIMP …

Abstract The Meseta de Coli Toro is a mafic volcanic plateau located in the Río Negro
province, north of Patagonia, Argentina. It belongs to the Somún Cura Massif geological …

Los afloramientos del Complejo volcánico Los Menucos-que cubren una superficie
aproximada de 8.000 km 2-representan la actividad magmática acontecida durante el …