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Mantle- and crustal-derived orogenic magmas provide insights into sources tapped during terrane accretion and supercontinent amalgamation. During Pangea formation volumetrically minor, but common, mafic–intermediate ‘calc-alkaline’ stocks intruded coeval granitoid plutons throughout the European Variscan. The Iberian Peninsula preserves the westernmost segment of this Upper Paleozoic orogeny that...
Central Iberian Variscan S-type granitoid plutons are cut by small-scale coeval appinitic stocks. Despite their whole-rock calc-alkaline character a subduction-related origin is not indicated for the appinites: field, petrographic, mineral chemistry, geochronological data and geodynamic information all point towards an extension-related genesis and primary alkaline composition. Appinite intrusion...
The high-temperature metamorphism recorded in the Valuengo and Monesterio areas constitutes a rare occurrence in the Ossa-Morena Zone of Southwest Iberia, where low-grade metamorphism dominates. The metamorphism of the Valuengo area has been previously considered either Cadomian or Variscan in age, whereas that of Monesterio has been interpreted as a Cadomian imprint. However, these areas share important...
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