Figure AF11. Comparison of locations and compositions of gabbros from ODP Holes 735B and 1105A with those obtained during the postcruise sampling survey, JR31, aboard James Clark Ross (Coogan et al., 2000). A. Bathymetry of the summit of Atlantis Bank (20-m contours) and distribution of gabbros (orange brown), basalts (dark brown), serpentinite (green), hydrothermal sulfides and oxides (purple), and shallow-water limestone (yellow) obtained by dredging (arrows) and shallow rock coring (small dots). Color coding of gabbros is as in Figure AF8, , except for Holes 735B and 1105A (large blue dots), which are polylithologic. B. Latitude of each shallow rock core vs. depth and projected locations of Holes 735B and 1105A. Lines linking summit rock core samples approximate the surface relief of the beveled summit, ~50 m. Allowing for a vertical exaggeration of 7.1, the central triangle links tops of oxide gabbros cored in Holes 735B and 1105A with two oxide gabbros obtained in rock cores by James Clark Ross, with apparent dips on the north-south profile as indicated. See "Appendix B," , for further discussion.

Figure AF11. Comparison of locations and compositions of gabbros from ODP Holes 735B and 1105A with those obtained during the postcruise sampling survey, JR31, aboard James Clark Ross (Coogan et al., 2000). A. Bathymetry of the summit of Atlantis Bank (20-m contours) and distribution of gabbros (orange brown), basalts (dark brown), serpentinite (green), hydrothermal sulfides and oxides (purple), and shallow-water limestone (yellow) obtained by dredging (arrows) and shallow rock coring (small dots). Color coding of gabbros is as in Figure AF8, except for Holes 735B and 1105A (large blue dots), which are polylithologic. B. Latitude of each shallow rock core vs. depth and projected locations of Holes 735B and 1105A. Lines linking summit rock core samples approximate the surface relief of the beveled summit, ~50 m. Allowing for a vertical exaggeration of 7.1, the central triangle links tops of oxide gabbros cored in Holes 735B and 1105A with two oxide gabbros obtained in rock cores by James Clark Ross, with apparent dips on the north-south profile as indicated. See "Appendix B" for further discussion.