• Structure, composition, tectonics, and evolution of the oceanic lithosphere
• Paleoceanography, paleoclimate, and sea level change
• Submarine volcanology, petrology and geochemistry of the oceanic crust and upper mantle lithosphere
• Marine hydrogeology, water-rock interaction, seeps and gas hydrates
• Hydrothermal venting and in situ fluid processes, and associated geochemistry
• Geochemical indicators of life operating below the seafloor
• Marine sedimentology, stratigraphy, sediment transport, and diagenesis
• Mid-ocean ridge spreading, back-arc rifting, transform processes, and ocean island/seamount formation and evolution
• Submarine components of subduction zone systems and passive margins
• Marine geohazards (e.g., earthquakes, faulting, mass wasting, geological aspects of tsunamis)
• Coastal processes (e.g., geological aspects of hurricanes, sea-level change, erosion, offshore deposition)

Miscellaneous

• Unrestricted