Hidden role of garnet reveals how Earth's 660-km seismic boundary forms

Researchers have discovered that the 660-km seismic discontinuity in Earth's mantle is influenced by a coupled reaction between ringwoodite and majorite garnet. This finding challenges previous models that attributed the boundary solely to the breakdown of ringwoodite.
Why it matters
Understanding the composition of the Earth's mantle is crucial for modeling plate tectonics, volcanic activity, and the planet's long-term geological evolution.
edited by Lisa Lock , reviewed by Robert Egan
The article is a straightforward report on scientific research findings without political or social commentary.
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