Structural Profile and Development of the Accretionary Complex in the Nankai Trough, Southwest Japan: Results of Submersible Studies - Accretionary Prisms and Convergent Margin Tectonics in the Northwest Pacific Basin - page 179

Fig. 4 (continued)
The normal fault in the 3rd ridge (Fig. 4b ) occurs in the back-limb of the hill-size
anticline and has larger offset than normal faults in the crest of the 1st ridge
(Fig. 2h ). Thrust faults in the 3rd ridge (Fig. 4i ) are more continuous and planar
compared to those in the 1st ridge (Fig. 2g ). Faults in the 3rd ridge are thus, more
brittle and have larger displacement than those of the 1st ridge. The transverse ridge
in the 3rd ridge has the largest dip-slip displacement among the Shionomisaki can-
yon (Fig. 1c ). No indication of chemosynthetic bio-communities or other evidence
for cold seepage was observed here.