In the Tregor region there are units called Tuffs de Tréguier and Ignimbrites de Lézardrieux.
•
L Bertrand gave the orogeny its name in 1921, naming it after Cadomus the Gaulish name for Caen in Normandy.
The Iberian plate came into existence during the Cadomian Orogeny of the late Neoproterozoic, about 650-550 Ma, on the margin of the Gondwana continent, involving the collisions and accretion of the island arcs of the Central Iberian Plate, Ossa-Morena Plate, South Portuguese Plate.
Variscan orogeny | Variscan Orogeny | Laramide orogeny | Caledonian orogeny | Alpine orogeny | Kibaran orogeny | Eburnean orogeny | Cadomian Orogeny | Acadian orogeny |