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 ...

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 ...

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 ...

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 ...

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 ...

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 ...