and unmetamorphosed materials (e.g. <5 MPa) (see Kawamura et al. 2009 ), and are
unlike the relatively strong (i.e. ~20 MPa) phyllites from the Tokai thrust described
in Kawamura et al. ( 2009 ) and Kawamura et al. ( 2011 ). Dive 1055, also of the 2008
cruise, collected samples including a cemented and slightly foliated mudstone cut
by thin carbonate veins. Interestingly, samples collected from within the Tokai
thrust zone during dive 1057 did not include similar diagenetic material, though
some of the 1057 samples have slip lineations on some parting planes.
Outcrops observed from SHINKAI 6500 during the 2008 cruise contain abundant
structural relationships, including dipping strata (Fig. 4a, b ), joint sets that are roughly
axial planar to the folds (Fig. 4c ), outcrop-scale tight folds (Fig. 4d ). A variety of
Fig. 4 Shinkai 6500 images of Tenryu canyon outcrops: ( a ) dipping stratigraphic sequence of mud,
silt, and fine sand layers; ( b ) dipping strata; ( c ) axial planar jointing and dipping strata; ( d ) anticline;
( e ) bedding plane offset in the distance by minor strike-slip faulting; ( f ) sketch of photograph in '( e )'