Lassen Volcanic Center

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Collecting gases from a hot spring pool near Lassen Peak, California
July 19, 2017

Collecting gases from a hot spring pool near Lassen Peak, California

Inverted funnel connected to thermoplastic tubing used to collect gas from a hot spring pool near Lassen Peak, California.

Geologic field-trip guide to Lassen Volcanic National Park and vici...
December 31, 2015

Geologic field-trip guide to Lassen Volcanic National Park

Geologic field-trip guide to Lassen Volcanic National Park and vicinity, California

Lassen Volcanic Center, California simplified hazards map showing p...
December 31, 2014

Lassen Volcanic Center, CA simplified hazards map

Lassen Volcanic Center, California simplified hazards map showing potential impact area for ground-based hazards during a volcanic event.

Volcano hazard zone map for Lassen Volcanic Region in Northern Cali...
December 31, 2012

Volcano hazard zone map for Lassen Volcanic Region in Northern CA p...

Volcanic Hazard Assessment for the Lassen Region, California is based upon a comprehensive investigation of the eruptive history and possible future eruption scenarios with associated volcanic hazards.

Chaos Crags in Lassen Volcanic National Park
September 13, 2012

Chaos Crags in Lassen Volcanic National Park

Chaos Jumbles (foreground) is a rockfall avalanche that formed around 340 years ago when one of the Chaos Crags domes (background) collapsed.

Chaos Crags in Lassen Volcanic National Park
August 4, 2012

View of Chaos Crags in Lassen Volcanic National Park from Lassen Peak.

Chaos Crags is a series of lava domes that erupted about 1,100 years ago from the Lassen Volcanic Center.

Cinder Cone in Lassen Volcanic National Park
January 5, 2009

Cinder Cone in Lassen Volcanic National Park

Cinder Cone erupted in the year 1666 in the Lassen Volcanic Region of northern California.

Gas bubbles through a sample bottle containing alkaline solution
September 12, 2003

Gas bubbles through a sample bottle containing alkaline solution

Gas bubbles through a sample bottle containing alkaline solution, allowing for separation of different gas phases.

Lassen Peak photographed from the Devastated Area prior to the 1914...

Lassen Peak photographed from the Devastated Area prior to 1914-191...

Lassen Peak photographed from the Devastated Area prior to the 1914-1915 eruption that changed the landscape.