volcanoes Flashcards
quiet or non explosive, most common type of eruption, produces huge amounts of lava but less ash and dust
effusive
less common but more destructive, produces clouds of hot ash, gas, and rock fragments
explosive
hardened magma blasted into the air
pyroclastic material
steam driven explosions, creates an explosion of steam
phreatic eruption
weakest and calmest type of eruption
hawaiian eruption
smallest type of explosive eruptions. consist of small explosions or weak pulsating fountains of fluid lava from a single vent
stromboli eruption
explosion filled with ash that reaches above the peak to form a dense cloud
vulcanian eruption
molten rock that solidifies before it hits the ground
volcanic bomb
formation of domes of glowing avalanches of hot ash called pyroclastic flow
pelean eruption
steam blast explosion that occurs when steam is produced from the contact of cold ground water with magma
phreatic eruption
continuous gas blasts and explosive ejection of viscous lava, gas rich magma, and large amounts of pumice
plinian eruption
loose and fluid lava over layers of solidified lava
shield volcano
tall, conical volcano composed of one layer of hardened lava, tephra, and volcanic ash
composite volcano
forms from ash and magma cinders
cinder cone volcano
large depression formed when a volcano erupts and collapses
caldera