Mantle plumes, or rising abnormally hot rock, can result in low-density anomalies. However, no known mantle plume exists beneath the IOGL. Instead, they found hot material rising from the African ...

The source for the isotopically-enriched Hawaiian magmas contains peridotites that experienced near-surface melting prior ...

New research suggests the IOGL is caused by hot, low-density mantle material rising from deep ... key forces like Réunion Island’s massive plume and other volcanic systems remain unaccounted ...

Scientists are now using earthquake data to verify the presence of low-density magma plumes beneath the gravity hole, which could confirm the model’s predictions about mantle activity.