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EOSC 114 Volcanic Eruptions Exam Bank Solution Manual Already Passed

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EOSC 114 Volcanic Eruptions Exam Bank Solution Manual Already Passed What are the 2 main types of Volcanic Eruptions? - Answers Effusive and Explosive Effusive - Answers outpouring of molten magma from the vent, lavas Explosive - Answers Gas driven violent eruptions, pyroclastic deposits Why d...

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  • October 17, 2024
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EOSC 114 Volcanic Eruptions Exam Bank Solution Manual Already Passed

What are the 2 main types of Volcanic Eruptions? - Answers Effusive and Explosive

Effusive - Answers outpouring of molten magma from the vent, lavas

Explosive - Answers Gas driven violent eruptions, pyroclastic deposits

Why does gas content matter? - Answers Magmas produce bubbles, bubbles expand as the magma rises
lower pressure forming leads to explosivity

What determines the eruption style? - Answers Viscosity and gas content

Why does high viscosity promote high explosivity? - Answers Because bubbles cannot easily escape from
highly viscous magma

Hawaiin - Answers Low viscosity, basaltic, magma



low explosively



Lava flows, lava lake, fire fountaining

Strombolian - Answers Basaltic/andesitic magma



Mildly explosive



Lava fountain, volcanic bomb, lava flow

Vulcanian - Answers Viscous andesitic/ rhyolite magma



Very explosive



Ash plume, lapilli, volcanic ash rain, volcanic bomb

Plinian - Answers Andesitic/rhyolitic ash

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