Data from the Global Volcanism Program of the Smithsonian Institution
Details for: Lassen Volcanic Center
Lassen Peak, rising above Manzanita Lake on the NW, is the focal point of the Lassen volcanic center, a concentration of volcanic features covering much of Lassen National Park. The massive lava dome forming Lassen Peak was constructed about 25,000 years ago and was the site of California's most recent eruption during 1914-1917. Chaos Crags, a lava dome complex on the north flank, and the aptly named Cinder Cone to the NE, have also erupted within the past 1200 years. Photo by Dave Wieprecht, 1995 (U.S. Geological Survey).
Volcano Number:323080
Volcano Name:Lassen Volcanic Center
Country:United States
Volcano Type:Stratovolcano
Last Eruption:1917
Elevation:3187m
Tectonic Setting:Subduction zone / Continental crust (> 25 km)
Pop. within 5km:0
Pop. within 10km:9
Pop. within 30km:2340
Pop. within 100km:439135
Latitude:40.492
Longitude:-121.508



Eruption Data from the Global Volcanism Program of the Smithsonian Institution
Volcano Number Volcano Name Eruption Number Activity Type Explosivity Index Max Explosivity Index Modifier Activity Area Activity Unit Start Evidence Method Start Date End Date
323080 Lassen Volcanic Center 20650 Confirmed Eruption Chaos Crags Radiocarbon (corrected) 800
323080 Lassen Volcanic Center 20651 Confirmed Eruption Chaos Crags Radiocarbon (corrected) 880
323080 Lassen Volcanic Center 20652 Confirmed Eruption Chaos Crags Radiocarbon (corrected) 980
323080 Lassen Volcanic Center 20653 Uncertain Eruption Chaos Crags 1650
323080 Lassen Volcanic Center 20655 Confirmed Eruption 3 ? Cinder Cone Dendrochronology 1666
323080 Lassen Volcanic Center 20657 Confirmed Eruption 3 Lassen Peak Historical Observations 1914/5/30 1917/6/29
Emissions Data from the Global Volcanism Program of the Smithsonian Institution No emissions data found for this volcano.


Data from the Earthchem Portal
Sorry. No data exist for this volcano in the EarthChem Portal.


Data from the SESAR Database


Data from the MaGa Database
Location: Lassen Peak (View Details at MaGa DB)
Description: Lassen Peak, also known as Mount Lassen, is the southernmost in the chain of eighteen large volcanic peaks that stretch from southwestern British Columbia to northern California. The "Great Explosion" eruption column of May 22, 1915 was seen as far as 240 km away.
Hazard Description: not reported
Type: volcanic_plume
Region: California, USA
Country: United States
Volcanic Complex: Lassen Peak
Gas Flux Data:
Measurement Name Detail Specie Flux Std. Dev. Unit of Measure
Lassen Peak_11081998 Detail CO2 110 0 Mg/d
Lassen Peak_19092000 Detail CO2 20 0 Mg/d
Lassen Peak_19092000 Detail H2S 2 0 Mg/d