Actividad ígnea filoniana en los Picos de Europa (N de España): basaltos, lamprófidos y andesitas Igneous activity in the Picos de Europa (North of Spain): basalts, andesites and lamprophyres

Dykes of basalt, lamprophyre and andesite have been found in the surroundings of the Picos de Europa massif and its petrology and geochemistry are studied in the present. The basalts are calc-alkaline rocks formed by plagioclase and pseudomorph crystals of olivine and amphibole while the lamprohyre has kersantitic affinity and is formed by plagioclase, augite and pseudomorph crystals of olivine. On the other hand, the andesites have shoshonite features and are formed by plagioclase, quartz, amphibole and biotite. The geochemical composition of all the rocks is different and therefore the character and petrogenesis of each one would probably be different.