Data from the Global Volcanism Program of the Smithsonian Institution
Details for: Crater Lake
The 8 x 10 km wide Crater Lake caldera, one of the most spectacular features of the Cascade Range, was formed about 6850 years ago during one of the world's largest Holocene eruptions. This eruption resulted in the collapse of ancestral Mount Mazama, a complex of overlapping stratovolcanoes and shield volcanoes. This view from the east shows Mount Scott, one of the pre-caldera stratovolcanoes, in the right foreground. A post-caldera cone, Wizard Island, rises above the far lake surface. Photo by Peter Lipman, 1981 (U.S. Geological Survey).
Volcano Number:322160
Volcano Name:Crater Lake
Country:United States
Volcano Type:Caldera
Last Eruption:2850 BCE
Elevation:2487m
Tectonic Setting:Subduction zone / Continental crust (> 25 km)
Pop. within 5km:52
Pop. within 10km:52
Pop. within 30km:366
Pop. within 100km:272674
Latitude:42.93
Longitude:-122.12


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
322160 Crater Lake 20609 Confirmed Eruption 6 North flank (Llao Rock) Radiocarbon (corrected) -5900
322160 Crater Lake 20610 Confirmed Eruption 7 Mt. Mazama summit and flank vents Ice Core -5680
322160 Crater Lake 20611 Confirmed Eruption 0 Central Platform Tephrochronology -5550
322160 Crater Lake 20612 Confirmed Eruption Wizard Island and Merriam Cone Tephrochronology -5250
322160 Crater Lake 20613 Confirmed Eruption Lava dome ENE of Wizard Island Radiocarbon (corrected) -2850
Emissions Data from the Global Volcanism Program of the Smithsonian Institution
Sorry. No emissions data found for this volcano.

Data from the Earthchem Library
Title Author Release Date DOI Link
Global overview of pre-eruptive magma chamber conditions Popa, Razvan-Gabriel 2021-07-30 10.26022/IEDA/112061 Details
Data from the Earthchem Portal

Data from the SESAR Database

Data from the MaGa Database
Error. The MaGa Web Services (http://www.magadb.net/web_services/) are down.