Some volcanoes never erupt, but still pose a threat. The post Why Some Volcanoes Never Erupt, But Still Pose a Threat ...

Lava flows are masses of magma that pour onto the Earth's surface during an eruption; they include both moving lava and the resulting solidified deposits of black rock. Lava flows come in a great ...

Magma moves through Hawaiian rift zones as dikes, which are tabular sheets of magma that move laterally and vertically ...

Following is a transcript of the video. Narrator: There's a volcano beneath Yellowstone National Park. But it's not your average volcano. It's hundreds of meters deep, larger than the state of ...

Lava spatters inside and flows down the side of the north vent inside Halemaʻumaʻu Crater at the summit of Kīlauea volcano on the Big Island as Episode 14 of the ongoing eruption that began Dec. 23, ...

This story appears in the August 2009 issue of National Geographic magazine. Update: Our new Yellowstone National Park stories may surprise you with pictures of Yellowstone's remarkable animals.

It is common for silicate-rich magmas to form at destructive plate boundaries, by partial melting and / or assimilation of crustal rocks (richer in silica than the mantle rock). As basalts or gabbros, ...

A HUGE volcano is on the brink of erupting with locals and holidaymakers being forced to evacuate after a red alert was issued. Molten hot magma has already begun flowing from under Iceland's ...

Shane Croucher is a Breaking News Editor based in London, UK. He has previously overseen the My Turn, Fact Check and News teams, and was a Senior Reporter before that, mostly covering U.S. news ...

Thu Mar 20, 2025 03:44 PM Last update on: Thu Mar 20, 2025 04:02 PM Volcanoes are the liveliest geological formations on Earth, and have astonished, and terrified, humans for ages. Starting from ...