Figure F5. Photomicrographs illustrating the petrography, mineralogy, and textures of olivine gabbros from Hole 1105A. Scale bar = 0.5 mm. A. Typical olivine gabbro with cumulus olivine, augite, and plagioclase (Sample 179-1105A-1R-1, 88-91 cm). B. Large poikilitic augite with composite and resorbed plagioclase inclusions (Sample 179-1105A-21R-1, 49-52 cm). C. Complex zoning in plagioclase cumulus grain in laminated olivine gabbro (Sample 179-1105A-12R-2, 50-55 cm). D. Breakdown of primary olivine into a polyhedral aggregate of recrystallized olivine (Sample 179-1105A-10R-1, 38-42 cm). E. Deformation bands in olivine (Sample 179-1105A-1R-4, 137-141 cm). F. Replacement of primary augite by a secondary augite (Sample 179-1105A-3R-1, 51-54 cm). Photomicrographs are by the Shipboard Scientific Party (1999).

Figure F5. Photomicrographs illustrating the petrography, mineralogy, and textures of olivine gabbros from Hole 1105A. Scale bar = 0.5 mm. A. Typical olivine gabbro with cumulus olivine, augite, and plagioclase (Sample 179-1105A-1R-1, 88-91 cm). B. Large poikilitic augite with composite and resorbed plagioclase inclusions (Sample 179-1105A-21R-1, 49-52 cm). C. Complex zoning in plagioclase cumulus grain in laminated olivine gabbro (Sample 179-1105A-12R-2, 50-55 cm). D. Breakdown of primary olivine into a polyhedral aggregate of recrystallized olivine (Sample 179-1105A-10R-1, 38-42 cm). E. Deformation bands in olivine (Sample 179-1105A-1R-4, 137-141 cm). F. Replacement of primary augite by a secondary augite (Sample 179-1105A-3R-1, 51-54 cm). Photomicrographs are by the Shipboard Scientific Party (1999).