The subduction zones where oceanic plates sink beneath the continents produce volcanic arcs such as those that make up the “rim of fire” around the Pacific Ocean. The volcanoes are fed by molten rock ...

Satellites detected a mysterious gravitational change beneath Earth's surface, suggesting rapid movement of interior masses.

(a) Tectonic setting background in the Tonga-Lau-Fiji region. (b) Schematic diagram of the upper mantle structure beneath the Tonga-Lau-Fiji region. A landmark study published in Geoscience—a leading ...

An international research collaboration has harnessed supercomputing power to better understand how massive slabs of ancient ocean floors are shaped as they sink hundreds of kilometers below Earth's ...

Far below our feet, two colossal structures the size of continents sit atop Earth’s core, one beneath Africa and one beneath the Pacific Ocean. These dense, hot anomalies have puzzled geophysicists ...

Earth’s deep interior may hold water equal to today’s oceans, challenging long-held views of how the planet became habitable.