supervolcanoes
Caldera-forming geological giants
Supervolcanoes are volcanic systems capable of eruptions thousands of times more powerful than ordinary volcanoes, ejecting enough material to affect global climate.
Unlike typical cone-shaped volcanoes, they often form calderas—massive depressions left after catastrophic eruptions.
Yellowstone sits atop a supervolcano.
No supervolcano has erupted in recorded human history, but geological evidence shows past events that blanketed continents in ash.
Subsurface pocket holding liquefied rock
- hotspotArea of notable activity
- rhyolitePale volcanic igneous rock
- superheatedHeated beyond phase change
- upliftRaise emotionally or physically
Hot volcanic gas-debris mixture
- ashfallAirborne volcanic debris descending
- pumiceLightweight volcanic abrasive
- tephraEjected volcanic material
- ash cloudAirborne eruption debris
lahar · sulfur dioxide · blast zone · dormancy · reawakening · precursor
Original U.S. national park
- craterImpact or volcanic basin
- collapseSudden structural failure
- depressionProlonged low state
- subsidenceGradual ground sinking
Large-scale species elimination
- global coolingTheorized planetary temperature decrease
- crop failureWhen fields yield nothing
- famineSevere food shortage
- ecosystem collapseTotal breakdown of environmental systems
Erupting thermal water sources
- hot springsHeated groundwater emerging naturally
- fumarolesVolcanic gas vents
- hydrothermal ventsSubmarine volcanic water jets
- Old FaithfulPunctual Wyoming geyser
magma chamber
Subsurface pocket holding liquefied rock
- hotspotArea of notable activity
- rhyolitePale volcanic igneous rock
- superheatedHeated beyond phase change
pyroclastic flow
Hot volcanic gas-debris mixture
- ashfallAirborne volcanic debris descending
- pumiceLightweight volcanic abrasive
- tephraEjected volcanic material
ash cloud · lahar · sulfur dioxide · blast zone · dormancy · reawakening · precursor
Yellowstone
Original U.S. national park
- craterImpact or volcanic basin
- collapseSudden structural failure
- depressionProlonged low state
mass extinction
Large-scale species elimination
- global coolingTheorized planetary temperature decrease
- crop failureWhen fields yield nothing
- famineSevere food shortage
ecosystem collapse · darkness · bottleneck · apocalyptic · existential risk
geysers
Erupting thermal water sources
- hot springsHeated groundwater emerging naturally
- fumarolesVolcanic gas vents
- hydrothermal ventsSubmarine volcanic water jets
Old Faithful · geothermal energy · thermal features · steam vents
dwarfing
Making appear small
- global impactEffect felt worldwide
- unprecedentedNever having occurred before
- geologybedrock, fault lines, faults, rock, basalt
- global issuesclimate change, water scarcity, inequality, pandemics, poverty
- Earth Mysteriesley lines, alignments, Nazca Lines, power points, power spots
supervolcanoescinder cones
Steep volcanic debris hills
fumaroles · stratovolcanoes · shield volcanoes · hot springs · geysers