After suspecting the presence of a series of underwater volcanoes near the Cook Islands, researchers have now mapped out the ...

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 ...

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.

Iwoto for the most part is now a flat volcanic island because its peak jutting above the ocean was eroded by waves as the islet rose. Still, it remains very active today and small-scale steam ...