Download Mt. Pinatubo

Mt. Pinatubo
Mt. Pinatubo
By: Kirsti
Max
Shelby
Random Facts
• Location: Luzon,
Philippines
• Type:
Stratovolcano
• One of the chain of
composite
volcanoes
• 1,745 meters
before eruption
• 1,485 meters after
eruption
Events Before Eruption
• March 15 -small earthquakes
• April 2 -phreatic eruptions (water and
magma interact producing violent
explosions of steam and pulverized
rocks)
• Volcanic activity increases throughout
April and June (ashfall, sulfur dioxide
emission)
• June 3-14
– first magmatic eruptions occurred
– Formation of a lava dome
– eruptions caused tephra fall, lightning,
and pyroclastic flows(4 km)
– Evacuation of people started June 7th
• June 15 –main eruption
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Pyroclastic flows
reaching as far as 16
km
Tephra fall reaching
as far as Vietnam,
Cambodia, and
Malaysia
Typhoon rains mixed
with ash deposits
making lahars
The ash cloud
covered 50,000 sq.
miles
Main Eruption
June 15
Before
After
Notable Statistics
•Dormant for 635 years
•Second largest eruption of 20th century
•Had an effect on global weather (temp.
dropped .9 degrees F)
•10,000 were homeless
•58,000 people were evacuated
•Total death toll:800
After main eruption
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Volcanic activity continued till 1992
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1992:
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Ash eruptions
Formation of Crater Lake
Lava Dome grew in Caldera
Crater Lake partly drowned in 2001
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Remains of a 2 by 3
mile caldera are still
standing today
Agriculture was
destroyed by the
pyroclastic flow and
tephra