Figure F1. A. The main tectonic features of the Southwest Indian Ocean and location of the Atlantis Fracture Zone (FZ). B. Atlantis Bank with locations of Holes 735B and 1105A. The bathymetry is from Dick, Natland, Miller, et al. (1999). C. Atlantis Fracture Zone and location of Holes 735B and 1105A (based on Dick et al., 1991b). D. Schematic cross section of the rift valley of the Southwest Indian Ridge parallel to the spreading direction (north-south) drawn ~20 km west of the transform (north-south). The diagram illustrates that block uplift at the ridge-transform forms a transverse ridge (Dick et al., 1991b).

Figure F1. A. The main tectonic features of the Southwest Indian Ocean and location of the Atlantis Fracture Zone (FZ). B. Atlantis Bank with locations of Holes 735B and 1105A. The bathymetry is from Dick, Natland, Miller, et al. (1999). C. Atlantis Fracture Zone and location of Holes 735B and 1105A (based on Dick et al., 1991b). D. Schematic cross section of the rift valley of the Southwest Indian Ridge parallel to the spreading direction (north-south) drawn ~20 km west of the transform (north-south). The diagram illustrates that block uplift at the ridge-transform forms a transverse ridge (Dick et al., 1991b).