IGNEOUS PETROLOGY (TYPES OF ERUPTIONS)

Question 1

?Eruption through fissures then central vents flows
?Generation of Shield Volcanoes
?Fiery Basaltic Lava Fountains, Lava flows and Cinder cones
?Calmest Eruption Type

Answer 1

Hawaiian

Question 2

?Persistent Fissure Eruptions of low viscosity basaltic lava
?Prolonged quiet eruptions may generate plateau and flood basalts

Answer 2

Icelandic

Question 3

?Explosive steam-blast eruptions w/lava flows and pyroclastic debris
?Named after the volcanic island Surtsey south of Iceland

Answer 3

Surtseyan (Phreatomagmatic)

Question 4

?SHORT LIVED and PERIODIC burst of MODERATELY explosive eruptions of PASTY Lava
?May have unstustained eruption column(nawawala agad)
?Episodic explosions with booming blasts

Answer 4

Strombolian

Question 5

?Discrete CANON-LIKE Explosions that are SHORTLIVED due detonation of volcanic plug
?Explosive Eruptions of Basaltic to Rhyolitic lava
?Ash Plumes of 5-10km high
?Pyroclastic debris of Bombs and Blocks

Answer 5

Vulcanian

Question 6

?Violent Eruption of volcanic debris ejected
?Scattering of ash over thousand of square kilometers

Answer 6

Vesuvian

Question 7

?tephra Eruption emit immense as clouds of up to 40km
?Produce pyroclastic flows and Calderas

Answer 7

Plinian

Question 8

?Very violent tephra eruption of volumes >1km3
?Ash Clouds heigth of 25-55 km

Answer 8

Ultraplinian