NEW CHARACTERIZATION OF THE S-REFLECTOR FROM GALICIA MARGIN, OFFSHORE SPAIN
We mapped the S-reflector and the overlying low velocity zone (LVZ) as two related but distinct, non-parallel surfaces (here labelled as S and S') enveloping a fault zone of varying thickness. We interpret the intervening layer as fault gouge. The gouge zone ranges in thickness from essentially no thickness to 429 m. A new nomenclature for this reflection package is also presented and called the "S-interval". Additionally, we interpret the area to be a unique type of "blended" core complex. The fault surface is strongly corrugated in several patches of the fault zone. These occur in the NW, center and S parts of the dataset. The patches have azimuths of 159, 153 and 178 degrees which averages to the normal of the M0 magnetic anomaly, but also displays that the minimum stress vectors may have been oriented at different angles, at different times along the margin.