Magmatism is the most important process for crustal growth and differentiation. Mantle or crustal decompression, volatile addition and heat-induced melting, on astenospheric and lithospheric scale, are essential mechanisms involved in the origin of primary partial melts, although fractional crystallisation, magma mixing and assimilation also play a significant role in their evolution. In many cases, magmatism favours ore-forming conditions and promotes the generation of profitable mineral deposits. The spatio-temporal and geophysico-chemical evolution of magmas is crucial to understand the nature of the mantle and/or crustal sources and the magmatic processes operating during melt extraction, magma ascent and their final emplacement, usually reflected in the mineral paragenesis, texture, structure and geochemical and isotopic features of igneous materials.
Igneous lithologies of distinct geochemical affinity (calc-alkaline, alkaline, tholeiitic and shoshonitic) and geophysical signature are widely distributed in the Iberian Peninsula, associated to diverse tectono-thermal episodes from Late Neoproterozoic to Late-Palaeozoic, Mesozoic and Cenozoic times. Magmatic rocks form a major component in western Iberia, although they are also profuse in its northeastern and southeastern edges. They are a fundamental constituent of the Spanish-Portuguese archipelagos. Critical elements mineralisations are usually related to these lithologies.
This Special Issue is intended to improve our knowledge regarding the processes involved in the generation and evolution of magmatism in the Iberian Peninsula and the Spanish-Portuguese archipelagos, contributing to a better understanding of transport and emplacement mechanisms, as well as the mineralization patterns in magmatic systems.
Dr. Enrique Merino Martínez
Dr. David Orejana García
Dr. Helena Sant’Ovaia
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