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New U-Pb ages for syn-orogenic magmatism in the SW sector of the Ossa Morena Zo...

The Ossa-Morena Zone (OMZ) is a major geotectonic unit within the Iberian Massif (which constitutes an important segment of the European Variscan Belt) and one of its distinguishing features is the presence of a noteworthy compositional diversity of plutonic rocks. In the SW sector of the OMZ, the tonalitic Hospitais intrusion (located to the W of Montemor-o-Novo) is considered a typical example of syn-orogenic...

Petrogenetic links between lepidolite-subtype aplite-pegmatite, aplite veins an...

In the Segura area, Variscan S-type granites, aplite veins and lepidolite-subtype granitic aplite-pegmatite veins intruded the Cambrian schist-metagraywacke complex. The granites are syn D3. Aplite veins also intruded the granites. Two-mica granite and muscovite granite have similar ages of 311.0 ± 0.5 Ma and 312.9 ± 2.0 Ma but are not genetically related, as indicated by their geochemical characteristics and (...

Early Ordovician volcanism in Eucísia and Mateus areas, Central Iberian Zone, n...

The Eucísia (Alfândega da Fé) and Mateus (Vila Real)areas are located in the Central Iberian Zone, a segment of the northern Gondwana margin which underwent a long Variscan geodynamic evolution. Lithostratigraphically both areas are characterized by a predominance of Precambrian to Cambrian metasedimentary rocks and by the transgressive nature of the Ordovician formations. Continental rifting on the platform of...

Dissecting complex magmatic processes : an indepth U-Pb study of the Pavia Plut...