Bringing a novel approach to a classic problem, researchers have revealed how changes in ocean chemistry over the past 2 ...

This accreted island arc includes exposures of upper mantle to volcanic upper crust. The section comprises six lithological units, in order of decreasing depth: (1) residual upper mantle harzburgite ...

Subduction of the Pacific Plate beneath the North American Plate creating the Aleutian trench and volcanic island arc (Credit: Alaska Volcano Observatory). Click image for a larger view.

Researchers have discovered the origins of a 200-year-old volcanic eruption that ejected so much sulfur into the atmosphere that it changed the climate and made the sun look blue. In 1831, the ...

The aviation color code over the area has been changed from green to yellow as a precaution, the Icelandic meteorological ...

The ongoing episodic eruption of the Big Island volcano within Kaluapele, its summit caldera, began its fifth eruptive event at about 3 p.m. after a fourth pause in activity started Jan. 18 and ...

The 15 islands and rocks that make up the Kermadec Islands are the only emergent volcanoes in the extensive volcanic arc that stretches from White Island to Tonga. They are New Zealand’s only ...

north of St Vincent. Most of the Lesser Antilles islands are part of a long volcanic arc in the Eastern Caribbean.

The volcanic islands of Raoul, Macauley, Curtis and L’Esperance are the emergent summits of large, complex stratovolcanoes that form part of a volcanic arc and subduction system extending from ...

Abstract: The incompatible element signatures of volcanic rocks forming Jeju Island, located at the eastern margin of ... located immediately behind the SW Japan arc. Jeju plume magmas can be divided ...