lava

Grand Canyon Volcanoes

When most of us think about the impressive geology of the Grand Canyon, our focus is on the ancient rocks. Within the past 1 million years, however, volcanoes have created striking displays in the canyon. Hot lava often flowed down the Colorado River channel for tens of miles; other times, it dammed the river, impounding water behind dams that eventually breached, sometimes releasing catastrophic floods.

By |2022-08-27T06:48:14-07:00June 16th, 2022|Our Amazing Earth|11 Comments

Volcanoes and East African Rift Roulette

The volcano recently erupting in Africa–Mount Nyiragongo–is one of the most active on our planet. Eruptions in 1977, 2002 and now beginning in May 2021, have resulted in a significant number of fatalities and extensive damage in the nearby and densely populated city of Goma. If scientists were calling the shots, they would relocate Goma and designate the region beneath this active volcano as a national park.

By |2021-06-03T06:15:22-07:00June 3rd, 2021|Our Amazing Earth|2 Comments

A Few Facts: Volcanic Explosions

Volcano-watchers have had lots of excitement lately with the ongoing eruptions on the Reykjavik Peninsula in Iceland and Soufriere, on the West Indies island of Saint Vincent. So far both eruptions are fairly small. Colorful graphic representations of the relative sizes of volcanic eruptions are intriguing, although variability in natural events confounds human attempts to assign neat boxes or bubbles to these phenomena.

By |2021-04-22T06:30:04-07:00April 22nd, 2021|Our Amazing Earth|4 Comments

Kilauea Stirring

On the evening of Dec 20, 2020, an eerie orange glow appeared on the infrared monitoring cameras on the summit of Kilauea volcano in Hawai’i Volcanoes National Park. The glow grew larger and larger, marking the beginning of a new volcanic eruption. Lava began pouring out from fissures in the summit crater and a steam cloud developed as the hot lava hit lake water and the water began to boil. 

By |2021-01-06T09:05:49-07:00January 7th, 2021|Our Amazing Earth|4 Comments
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