Mantle upwelling under mid ocean ridge spreading centres leads to decompression melting.

Name: Mantle upwelling under mid ocean ridge spreading centres leads to decompression melting.
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Mantle upwelling brings hot mantle material closer to the surface, reducing the pressure and causing it to undergo decompression melting. This process produces magma that rises to the surface and solidifies, forming new oceanic crust at the mid-ocean ridges.

Mantle Upwelling Under Mid Ocean Ridge Spreading Centres Leads to Decompression