Geology Chapter 2.13 (printed)

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  • Created by: abbbyw
  • Created on: 05-12-17 19:36
Volcanic Explosivity Index (VEI)
a measure of the explosiveness of volcanic eruption, allows comparison, from 0-8 of increasing explosivity
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Hawiian eruptions
large amounts of very fluid basaltic magma from which gases escape, few pyroclasts
2 of 6
Strombolian eruptions
more explosive with less fluid basalt and andesite lava, regular explosions of gas + pyroclastic material
3 of 6
Vulcanian eruptions
violent with viscous andesitic lava and large quantities of pyroclastic material from large explosions
4 of 6
Plinian eruptions
extremely explosive with viscous gas-filled andesitic and ryholitic lava and tremendous volumes of pyroclastic material blasted out
5 of 6
Isopachyte
a line jointing points of equal thickness of a deposit (ash). The maps may be called isopach maps
6 of 6

Other cards in this set

Card 2

Front

large amounts of very fluid basaltic magma from which gases escape, few pyroclasts

Back

Hawiian eruptions

Card 3

Front

more explosive with less fluid basalt and andesite lava, regular explosions of gas + pyroclastic material

Back

Preview of the back of card 3

Card 4

Front

violent with viscous andesitic lava and large quantities of pyroclastic material from large explosions

Back

Preview of the back of card 4

Card 5

Front

extremely explosive with viscous gas-filled andesitic and ryholitic lava and tremendous volumes of pyroclastic material blasted out

Back

Preview of the back of card 5
View more cards

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