Mid-ocean ridge
Arc volcano
Back-arc spreading center
Intra-plate volcano
& Other
Ridge & Transform
Confirmed
Confirmed
Confirmed
Trench
Confirmed
Inferred
Inferred
Inferred
Exclusive Economic Zones
Back-arc spreading center
Intra-plate volcano & Other
Ridge & Transform
Trench
Mid-ocean ridge
Exclusive Economic Zones
Arc volcano
Inferred
Confirmed
Inferred