Answer:
I think the answer is decompression melting, but I'm not completely sure
Explanation:
The process of melting that forms basaltic magma at divergent plate boundaries, such as the mid-ocean ridges is known as decompression melting.
Change of a solid into a liquid when heat is applied is known as melting.
Melting is also known as fusion.
Melting occurs when the internal energy of a solid increases.
Basaltic magmas are formed by exceeding the melting point of the mantle. Basaltic lava is high in iron, magnesium, and calcium but low in potassium and sodium.
Divergent boundaries are spreading boundaries where new oceanic crust is created to fill in the space as the plates moves apart.
Most divergent boundaries are located along Mid-ocean ridges.
The mid-ocean ridge is two chains of mountains separated by a large depression that form at a spreading center.
Decompression melting involves the upward movement of earth's mostly-solid mantle.
To learn more about decompression melting here
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