Linked from
The 50 pages that link to Mid-ocean ridge, each with the reason it gives.
Divergent boundaryBroader topic: This is the characteristic oceanic expression of plate divergence.
Harry HessBroader topic: Hess placed rising mantle material and new crust at these submarine chains.
Earth's crustBroader topic: Rising magma solidifies here to make new oceanic crust.
SeabedBroader topic: This volcanic ridge system creates new seabed.