The Kīlauea volcano in Hawaii is said to be the world's most active volcano, and yet we still don't really know how it was born.
the creation of crystals in deep pools of magma, which do not react with residual melt later on.
Garnet is a crystal that can form when magma is subject to high pressures and temperatures more than 90 kilometers beneath Earth's crust. The fact its presence is required to explain the composition of rocks from Kīlauea suggests the original eruption came from similar depths.
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