Figure F8. Correlation of radiolarian claystone and structurally-defined décollement/proto-décollement zone (Wallace and Moore, unpubl. data) as designated by shipboard sedimentologists and structural geologists (Biju-Duval and Moore, 1984; Mascle et al., 1988; Shipley et al., 1995) and décollement/proto-décollement zone reflection from seismic data. Note that the stratigraphic columns at each hole are aligned on the base of the décollement zone (heavy gray dashed line) as determined from cores. The zone reflection is the position of the peak amplitude of the waveform, and its depth is measured from the peak amplitude of the water-bottom reflection.