Which mechanism restricts magma ascent during subduction beneath continental crust composed largely of felsic rock?

💡 Explanation

When rising through continental crust, magma stalls if the density difference between the magma and surrounding rock exceeds the rock's fracture strength causing magma accumulation at depth. Therefore density contrast exceeding fracture strength restricts magma ascent, rather than other offered mechanisms that do not predominantly control magma ascent.

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