A) Geological sketch of the Variscan Belt showing the main terranes and domains, modified after Martínez Catalán et al. (2014); B) Simplified geological map of the Iberian Massif (Julivert et al., 1974; Simancas, 2019) showing mafic rocks in the studied areas and the mafic suites reported in the Central Iberian Zone (CIZ) from Ordovician times to the late stages of the Variscan orogeny. Abbreviations: OMZ: Ossa Morena Zone; GTMZ: Galicia-Tras-Os Montes-Zone; WALZ: West Asturian Leonese Zone (WALZ); CZ: Cantabrian Zone; MN: Montagne Noire; ECM: External Crystalline Massifs of the Alps; VM: Vosges Massif; BF: Black Forest; CP: Calzadilla Plutón (López-Moro et al., 2017); LA: Praia de Labruge (de Almeida Coelho, 2021); GD: Godomar (Medeiros et al., 1981); F: Farminhao (Cotrim et al., 2021); AP: Appinites (Montero et al., 2004b, a; Scarrow et al., 2009); TAC: Toledo Anatetic Complex (Bea et al., 2006); C: Caloco Sector (Villaseca et al., 2015; Orejana et al., 2017); R: Revenga Sector (Villaseca et al., 2015; Orejana et al., 2017); TM: Tenzuela Massif; MMC: Mérida Montoro Complex(Bandrés et al., 2004); SB: Sierra Bermeja (Errandonea-Martin et al., 2019); CM: Carrascal Massif (Solá et al., 2010); MG : Microgabbros (Orejana et al., 2020); CS: Codosera Syncline (López-Moro et al., 2007); AS: Almadén Syncline (Higueras, 1995; Higueras et al., 2013); GS: Guadalmez Syncline (Gumiel and Arribas, 1987; Lorenzo Álvarez et al., 1995).