lavas
Erupted molten rock
Lavas is the plural of lava, referring to multiple types or flows of molten rock from volcanic eruptions: The geologist studied lavas from three different volcanoes.
Scientists distinguish lavas by their composition and behavior—some flow smoothly, others move in chunky masses.
Molten rock underground
- pyroclasticHot eruption debris
- calderaCollapsed volcanic summit basin
- craterImpact or volcanic basin
- ventOpening for airflow
fissure · ash · plume · explosion · tremor · sulfur · tephra · lahar
Fine-grained volcanic stone
- andesiteIntermediate volcanic rock
- rhyolitePale volcanic igneous rock
- obsidianGlassy igneous rock
- scoriaPorous volcanic ejecta
tuff · pumice · igneous · extrusive · silica · vesicular · crystallization · mineralogy
Sharp, blocky lava flow
- riverLarge flowing watercourse
- channelPassage for transmission
- cascadeSuccessive downward flow
- torrentViolent rushing flow
ropy · surge · current · stream · viscosity · advance · front · cooling
Liquefied by extreme heat
- incandescentGlowing from heat
- glowingGiving off steady light
- red-hotHeated to glowing
- fieryIntensely hot or passionate
scorching · searing · radiant · thermal · temperature · cooling · solidifying · viscous
magma
Molten rock underground
- pyroclasticHot eruption debris
- calderaCollapsed volcanic summit basin
- craterImpact or volcanic basin
vent · fissure · ash · plume · explosion · tremor · sulfur · tephra · lahar · mudflow
basalt
Fine-grained volcanic stone
scoria · tuff · pumice · igneous · extrusive · silica · vesicular · crystallization · mineralogy · groundmass
aa
Sharp, blocky lava flow
torrent · ropy · surge · current · stream · viscosity · advance · front · cooling · solidification
molten
Liquefied by extreme heat
- incandescentGlowing from heat
- glowingGiving off steady light
- red-hotHeated to glowing
fiery · scorching · searing · radiant · thermal · temperature · cooling · solidifying · viscous · fluid
lavasice
Water's solid form
glaciers · solid rock · permafrost · ice sheets · icebergs
- lava lampsDecorative lights with floating blobs
- lava cakeBaked confection, liquid core
- chocolate lava cakeDessert with liquid center
- lava flowMoving volcanic discharge
- hot lavaSuperheated volcanic flow
- lava rockSolidified volcanic ejecta