Role of garnet shaping the 660-km seismic discontinuity
Masaki Akaogi
Nature Communications, Published online: 25 May 2026; doi:10.1038/s41467-026-73717-6 This study shows that garnet affects the 660-km seismic discontinuity. High-pressure experiments reveal that the post-garnet transition induces the post-spinel transition, explaining observed structural variations and supporting a pyrolitic mantle.