An overview on the Ordovician volcanic rocks and unconformities in the Central Iberian and Galicia-Trás-os-Montes Zones of the Iberian Variscan Massif

Ordovician geodynamics: The Sardic Phase in the Pyrenees, Mouthoumet and Montagne Noire massifs International Meeting (2017. Figueras, España)New detailed continuous digitalized maps (1:50.000 scale Geode program of the Spanish Geological Survey: IGME) facilitate an innovative regional approach to the Ordovician unconformities and volcanic rocks interbedded in the sequence (Clariana García et al., online; Villar Alonso et al., online). For this work, these maps have been actualized by up to date references from Spain and Portugal. At the selected areas of the Variscan Massif, two main Ordovician unconformities are generally described: (known ad the Toledanic and Sardic) but the regional approach unveils different stratigraphic positions at the diverse sectors. Besides, a new picture on the vulcanite abundance and variety arises. The general advances in geochronology and geochemistry of the interbedded volcanic bodies have been very useful to correlate the effusive events all over the vast area covered by this review (Coke et al., 2011; Dias da Silva et al., 2014, 2015; Díez Montes, 2007; Talavera et al., 2013).Unidad de Salamanca, Instituto Geológico y Minero de España, EspañaInstituto Dom Luis, Universidade de Lisboa, PortugalInstituto Geológico y Minero de España, EspañaPeer reviewe