Oceanic plateau melting

Lithospheric mantle that formed in this manner would bear the imprint of two processes (1) partial melting and magma extraction, which creates the oceanic plateau and a depleted residue (2) metasomatism associated with subduc-tion, the process primarily responsible for the growth of continental crust (Taylor McLennan 1985 Arculus 1999). 

Plume/oceanic plateau models This model is a variant of the basalt lower crust melting model described above, but in this case basalt melting takes place at the base of thick basaltic crust. Crust of this type may form through imbrication and stacking of normal-thickness oceanic crust or may form as initially thick crust in an oceanic plateau as the product of mantle plume-related magma-tism (Chapter 3, Section 3.1.5). 

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