Tephra is fragmented volcanic material — including ash, rock and strands of volcanic glass — blasted into the air during an ...

Above Wenatchee, spires reveal volcanic history in 44-million-year-old rock. High above the city of Wenatchee, Washington, a group of spires made of a unique type of 44-million-year-old rock tell the ...

One house has gained a unique feature after a volcano erupted and spilled lava inside. Edosa Osemwegie, 25, a residential counselor from Boston, recorded a video of the house while on vacation in Cha ...

(Reuters) - The latest bursts of molten rock, ash and toxic gas from Kilauea Volcano on the Big Island of Hawaii are part of an ever changing and still largely mysterious cycle of eruptions that have ...

Volcanic rocks are igneous rocks that solidify from lava or pyroclastic material at or near Earth’s surface, and they are central topics in petrology, volcanology, and tectonics. They are typically ...

GRINDAVIK, Iceland (AP) — Lava from a volcanic eruption in Iceland flowed Sunday toward defenses around the town of Grindavik, which have so far held the molten rock back from the evacuated community.