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EarthWord – Nuée Ardente

EarthWord – Nuée Ardente

A nuée ardente is a turbulent, fast moving cloud of hot gas and ash erupted from a volcano. 

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Volcano Watch — A geological tour of the Hawaiian Islands: Hawai‘i

Volcano Watch — A geological tour of the Hawaiian Islands: Hawai‘i

As the 2016 Volcano Awareness Month comes to an end, so too does our series of "Volcano Watch" articles exploring the geology of the Hawaiian Islands...

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Volcano Watch — A geologic tour of the Hawaiian Islands: Maui

Volcano Watch — A geologic tour of the Hawaiian Islands: Maui

As part of Volcano Awareness Month, our January "Volcano Watch" articles are taking us on a geologic tour of the Hawaiian Islands. Today's stop: Maui...

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Photo and Video Chronology - Kīlauea - January 19, 2016

Photo and Video Chronology - Kīlauea - January 19, 2016

Scattered breakouts northeast of Pu‘u ‘Ō‘ō; clear views in Pu‘u ‘Ō‘ō Crater

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Volcano Watch — A geologic tour of the Hawaiian Islands: O‘ahu

Volcano Watch — A geologic tour of the Hawaiian Islands: O‘ahu

January is Volcano Awareness Month, during which our "Volcano Watch" articles are exploring the geology of the Hawaiian Islands. The series continues...

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Finding the Age of Yellowstone's Geysers and Hot Springs

Finding the Age of Yellowstone's Geysers and Hot Springs

USGS scientists often determine the age of volcanic rocks with dating techniques that involve radioactive decay of elements like uranium and argon.

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Photo and Video Chronology - Kīlauea - January 8, 2016

Photo and Video Chronology - Kīlauea - January 8, 2016

Early morning explosive event at Kīlauea summit lava lake

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Volcano Watch — A geologic tour of the Hawaiian Islands: Kaua‘i and Ni‘ihau

Volcano Watch — A geologic tour of the Hawaiian Islands: Kaua‘i and Ni‘ihau

Welcome to the 7th annual Volcano Awareness Month on the Island of Hawai‘i!

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Photo and Video Chronology - Kīlauea - January 7, 2016

Photo and Video Chronology - Kīlauea - January 7, 2016

Halema‘uma‘u lava lake

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Photo and Video Chronology - Kīlauea - January 4, 2016

Photo and Video Chronology - Kīlauea - January 4, 2016

Another small explosive event at Kīlauea Volcano's summit lava lake

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Photo and Video Chronology - Kīlauea - January 2, 2016

Photo and Video Chronology - Kīlauea - January 2, 2016

Rockfall triggers small explosive event in Halema‘uma‘u lava lake

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Volcano Watch — Kīlauea Volcano's East Rift Zone eruption turns 33!

Volcano Watch — Kīlauea Volcano's East Rift Zone eruption turns 33!

What do actor Mel Gibson, football quarterback Eli Manning, and Kīlauea Volcano's ongoing East Rift Zone eruption at Pu‘u ‘Ō‘ō have in common? They...

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