Figure F1. Tectonic and morphologic setting of Atlantis Massif. Bathymetric contours illustrate the deep median valley of the Mid-Atlantic Ridge and its intersection with the Atlantis transform fault. The shallow dome comprising the core of Atlantis massif has two structural components: the central dome, where IODP footwall work was focused, and the southern ridge. The eastern volcanic block contains the hanging wall IODP sites.