EAST AVALONIA, THE 3RD PARTNER IN THE CALEDONIAN COLLISIONS - EVIDENCE FROM DEEP SEISMIC-REFLECTION DATA

Further evidence for the existence of the terrane East Avalonia (Cadom ia) in north-west Europe, its boundaries and its role in the Caledonia n collisional processes comes from studies of deep seismic reflection data at sea and on land. Various sutures are found in the north-east a nd the north-west, and a generally poor reflectivity dominates in the major part. Further details of reflectivity patterns support the idea that a huge terrane which split from the northern rim of Gondwana move d northward and collided with the merging plates Laurentia-Baltica. It s docking features are analysed.