f NE Atlantic continental rifting and volcanic margin formation

The NE Atlantic rift system, which has been under extensional deformation since the Caledonian orogeny, experienced a series of rift episodes in Late Paleozoic to Early Cenozoic times (Fig. 1). Late Paleozoic rifting is poorly constrained, particularly with respect to timing. However, rifted basin geometries, inferred to be of this age, are observed at depth in seismic data from the flanks of the younger rift structures.