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CASE STUDIES
shizzle and ka-bamm




Sunday, 2 June 13

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subduction of the
PINATUBO 800 deaths- collapse of
infrustructure,flooding and disease
MANILA trench 1991 60000
Oceanic pacific
philippines, south evacuated thanks to US
plate under
east asia 100000 homeless Clark air base plan,
continental they played a
eurasian plate large role in
$700 damage evacuation
last eruptiom
3000 and 5000…

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constructive
boundary
Icelandic
2010
north american
plate and
eurasian plate
diverge




harness volcanic power


-huge disruption to air travel since 9/11. Thousands of
passengers had to travel home overland. air hot water and steam close proximity to surface from the magma transfering heat to the surface
companies lost millions=trade sector,…

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MINOR INTRUSIVE
LANDFORMS tourism

GEYSER
ground water is heated from magma
beneath earths surface. pressure is built
and the water and gas explodes. they are
short lived as the water runs out or the
HOT SPRINGS
vent collapses. however the vents can
ground water heated from deep below
refill and…

Page 5

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MINOR EXTRUSIVE
BATHOLITH
DYKE SILL
magma slowly cools and solidifies as large
verticle intrusions which cut accross horizontal cooling of magma with verticle
crystals. erosion exposes this. eg TEN
bedding planes with horizonal cracks cracks
TORS




igneous
intrusions




Sunday, 2 June 13

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CONSTRUCTIVE
hotter lava 1200

sheild shape as lava spreads

slowly cooling = large crystals

regular

gentle = accessible

little gas

basaltic, low in silica

crust is created
Sunday, 2 June 13

Page 7

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cooler magma 800

cools quickly = smaller crystals DESTRUCTIVE
violent + explosive > superheated gas and steam

ocean trenches

impure lava

gaseous= build of pressure = explosive

irregular- long dormant periods

cone shape

sticky/viscous

layers of ash

rhyolitic, rich in silica

crust is created and destroyed

acidic = Andes
Sunday,…

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Managing Volcanoes warning signs
swelling of ground
surface
MODIFY THE EVENT?! gas emissions
Divert lava flows animal behavior
spray lava with sea water to cool and slow-
the heat output can be used for geothermal
energy!




PRIMARY SECONDARY
-tephra solid particulates ejected -tsunami
-lava flows -lahars- NEVADO DEL RUIZ 1985…

Page 9

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HAITI QUAKE north american and
carribean plate
soft 7.0 M
RED
CROSS
sediments 13km shallow
amplified huge rise in
and US food prices strike slip fault
ground
MILITARY 250,000 deaths
shaking
cholera
epicentre
near capital P-
au-prince LONG TERM
-reform farming sector to ensure self
sufficiency and stockpiling
-investment in…

Page 10

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CHRISTCHURCH 7.3 M
daytime=many deaths
complex fault system- fault
SHORT LONG IMPACTS
unzipping (unexpected)
180 deaths
IMPACTS -mental/physcological damage eg
shallow
-CBD infrastructure domestic violence rates
damage as well as -insurance issues
historic heritages such as -during the winter so damaged
the cathedral windows=cold
-port hills landslides -crime increase and…

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