Tracing the Cadomian magmatism with detrital/inherited zircon ages by in-situ U-Pb SHRIMP geochronology (Ossa-Morena Zone, SW Iberian Massif)

► Zircon dating in granites of SW Iberia evidence Cadomian deformation before c. 526 Ma. ► Sources of the Early Cambrian rocks derived from the West African craton. ► Sources show age clusters in the Late Cryogenian-Ediacaran interval (c. 640-560 Ma). ► Sources reflect a long-lived magmatic arc in the northern margin of Gondwana.