Figure F19. Close-up photograph (upper left) of interval 176-735B-143R-2, 101-115 cm, showing a felsic vein (white) with oxide-rich gabbro (dark) at ~905 mbsf in Hole 735B. The deformation intensity is to the right of the close up. The close up is linked to measurements of magnetic susceptibility vs. depth at 4-cm intervals (upper right) corresponding to a portion of lithologic interval (LI) 693. The magnetic susceptibility inset shows the individual susceptibility peak among several others in a 7-m section of core. The lower panels focus on the nearly horizontal felsic vein and show by means of successive enhanced-contrast selection of the dark oxide minerals, the association of coarse ilmenite and magnetite with the vein and strong foliation of the rock near the vein.

Figure F19. Close-up photograph (upper left) of interval 176-735B-143R-2, 101-115 cm, showing a felsic vein (white) with oxide-rich gabbro (dark) at ~905 mbsf in Hole 735B. The deformation intensity is to the right of the close up. The close up is linked to measurements of magnetic susceptibility vs. depth at 4-cm intervals (upper right) corresponding to a portion of lithologic interval (LI) 693. The magnetic susceptibility inset shows the individual susceptibility peak among several others in a 7-m section of core. The lower panels focus on the nearly horizontal felsic vein and show by means of successive enhanced-contrast selection of the dark oxide minerals, the association of coarse ilmenite and magnetite with the vein and strong foliation of the rock near the vein.