description Chaitén fumaroles Overview
The Chaitén fumaroles are volcanic gas vents associated with Chaitén volcano and its caldera in southern Chile. They became a prominent feature of the volcano's activity during and after the unexpected rhyolitic eruption that began in May 2008. The eruption produced ash, a sustained plume, and a new lava dome inside the caldera; fumaroles continued to emit steam and volcanic gases from the dome and surrounding eruptive area. They are monitored as part of the volcano's ongoing activity.
help Chaitén fumaroles FAQ
When did the Chaitén eruption begin?
The unexpected eruption began in May 2008, with the first major activity reported on May 2. It was a rhyolitic eruption, a type that can produce viscous lava and large ash columns.
Why did the Chaitén eruption surprise scientists?
Chaitén had not been widely recognized as an actively erupting volcano immediately before 2008. The sudden explosive event led to the evacuation of the nearby town of Chaitén.
What are the Chaitén fumaroles?
They are steam and volcanic-gas vents associated with Chaitén's caldera and the post-2008 volcanic system. Their activity reflects heat and gases remaining beneath the volcano after the eruption.
Did the 2008 Chaitén eruption produce lava?
Yes. The eruption produced rhyolitic lava domes as well as ash and pyroclastic material. Rhyolite is silica-rich and viscous, so it tends to move slowly and build thick domes rather than fluid lava rivers.
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