New geochronological and geochemical data are reported for the San Blas Pluton (SBP), in the northwestern Sierra de Velasco, Sierras Pampeanas, which intrudes Ordovician granitoids developed during the Famatinian orogeny. ...

The Asha pluton, the oldest unit of the San Blas intrusive complex (Early Carboniferous), exhibits impressive examples of magmatic structures formed by accumulation of K-feldspar megacrysts, enclaves, and schlieren. Almost ...

Carboniferous igneous activity in the Sierra de Velasco (NW Argentina) led to the emplacement of several magmas bodies at shallow levels (< 2 kbar). One of these, the San Blas intrusive complex formed over millions of years ...

The Tacaná Volcanic Complex (CVT) is located at the intersection of three tectonic plates, two continental: North America and the Caribbean in contact by the left lateral fault system Polochic-Motagua, which are subducted ...

The intrusion of granitoids into the Eastern Sierras Pampeanas in the Early Carboniferous took place after a long period of mainly compressional deformation that included the Famatinian (Ordovician) and Achalian (Devonian) ...

La Hoja Geológica 2969-I, Aimogasta, se extiende entre los paralelos de 28º y 29º de latitud sur y los meridianos 66º 00´ y 67º30´ de longitud oeste de Greenwich comprendiendo una superficie de 16.335 km². Abarca el sector ...