Island arcs, which arise from volcanic activity along subduction ... to island arcs through hydrothermal alteration of the ocean floor, which is ultimately subducted into the mantle source regions ...

Volcanic eruptions in the middle of tectonic plates, far from any volcanically-active plate boundaries, have created many of the thousands of ocean islands and seamounts that cover Earth's ocean ...

Situated on the island of Tenerife, Teide National Park features the Teide-Pico Viejo stratovolcano that, at 3,718 m, is the highest peak on Spanish soil. Rising 7,500 m above the ocean floor, it is ...

The towering undersea volcano known as Hunga Tonga-Hunga Ha‘apai had awakened, and on a balmy afternoon in January 2022 it began blasting its insides into the sky above this Pacific island chain ...

With the discovery in 1953 of the Great Global Rift, a volcanic valley running ... the youth of the ocean floor, the presence of island arcs, the deep sea trenches, and the origin of the midocean ...

Jeju Volcanic Island and Lava Tubes together comprise three sites that ... the fortress-like Seongsan Ilchulbong tuff cone, rising out of the ocean, a dramatic landscape; and Mount Halla, the highest ...

The Earth's plates jostle about in fits and starts that are punctuated with earthquakes and volcanic eruptions ... The process renews the ocean floor and widens the giant basins.

In 2022, a new volcanic island emerged from the ocean nearby – and it’s just grown again. Before this point, the island at Home Reef had reached 12.2 hectares (30.1 acres), which is roughly ...