Fig. 28

Geologic interpretation of Shinkai Dive 652 on the eastern upper wall of Atlantis Bank (Fig. 3). Note that an X is placed next to a sample that has undergone crystal-plastic deformation or is a composite sample with two lithologies, so the symbols do not obscure each other. a Profile showing the dive path (distorted so that the same fault scarp appears twice due to the successive east to west, south to north, and east to west submersible track (indicated by the X next to the lithologic symbol. P. T. Robinson diving scientist as indicated in a. b Plan view of the dive showing the detachment fault footwall on the down-dropped bench below the wave-cut platform and the exposed normal fault face. Note that the phosphorite crust includes a small chip of serpentine imbedded in it (not shown). c Metagabbro amphibolite 6K-462-11: a cataclastic breccia or fault gouge with angular, gneissic, amphibolitized, gabbro, and diabase fragments welded in a matrix of 50% lower amphibolite or greenschist facies comminuted mineral fragments. Diabase clasts are only distinguishable in thin section