The caldera of the volcano on land is just under ... a rapidly deposited marine sequence that was incorporated into the Caucasus mountains. At present, these sediments occur at depths of ∼3 ...

Not all mountains in the Yellowstone region are volcanic in origin. The Wind River Range, southeast of Yellowstone National ...

Footage shows the fiery eruption, with molten rock spurting from vents in the southwest of Kaluapele, the summit caldera, and flows streaming from the south vent on January 17. A wind vortex ...

Geologists said every episode of the current eruption has been confined to Halemaumau crater within Kaluapele, the summit caldera, in Hawai’i Volcanoes National Park.

The Kentucky-bred son of Curlin led for much of the 1 1/16th miles, $400,000 race, briefly lost the lead and rallied again down the stretch to hold off Caldera by a nose in arguably the most ...