Consider the proportionality of mantle melting. What approximate proportions with the mantle peridotite need to produce basalt? ?
Compared to a FO-DI-AN phase diagram: how does it compare to the experimentally established eutectic melting? We call fresh mantle rocks fertile wall those that have undergone partial melting are called depleted. Using the melting relationship look at olivine-orthopyroxene-clinopyroxene diagram and name the Rock type of depleted mantle rock.
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