Figure F3. Schematic box diagram showing the stratigraphy of the BHMS and ODP Mound deposits. Stratigraphic control is based on boreholes. The relative locations of these boreholes is indicated by the solid circles along the seafloor surface and highlighted in the subsurface by brighter hues. The gray schematically shows hydrothermal plumes from vents created by drilling into the hydrothermal reservoir.