Geology of giant quartz veins and their host rocks from the Eastern Pyrenees (Southwest Europe)

Giant Quartz Veins (GQVs) are ubiquitous in different tectonic settings and, besides being often related to hydrothermal ore deposits, also represent large-scale fingerprints of the structural and geochemical history rocks which they hosted. Here we present detailed geological maps interpretations three key areas Eastern Pyrenees where GQVs well exposed. The studied record styles deformation representative common present: pre-Variscan metasedimentary metavolcanic rocks, late Variscan granitoids, Mesozoic Cenozoic sedimentary rocks. study formed along pre-existing brittle ductile structures or at locations with lithological heterogeneities, have alteration haloes silicified host presented here contribute gain insights into formation mechanisms constraints on fluid flow mineral reactions depths Earth’s crust.