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1 Prior to quake After the quake Figure 6.7 pg 170 Damaging waves Greatest amount of surface displacement usually
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Damaging waves Figure 6.7 pg 170

Jun 04, 2022

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Page 1: Damaging waves Figure 6.7 pg 170

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Prior to quake

After the quake

Figure 6.7  pg 170

Damaging wavesGreatest amount of surface displacement

usually

Page 2: Damaging waves Figure 6.7 pg 170

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Risk Map pg 183

High in silica

Low in silica

Page 6: Damaging waves Figure 6.7 pg 170

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Plates

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Continental crust

Oceanic crust

high temperature

lower temperature

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CompositeStrato­

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100s of km in diameter

General Controls of VolcanoesType of magmaPlate Boundary Type

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1 km 3 ejected from Mt St Helens

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100s of meters in diameter

Eldfell, Iceland

convergance of Oceanic / Continentalplates

Pyroclastic Flow"Glowing Cloud"

Fluid lavas

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50 km3 of material 

ejected

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boss

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b.  Convergent Plate Boundaries1. Oceanic ­ Continental boundaries2. Deep Ocean trench forms3. Subduction of Ocean plate beneath Continental plate

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