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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

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Mt. Pinatubo

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  1. Mt. Pinatubo Mt. Pinatubo By: Kirsti Max Shelby

  2. Random Facts • Location: Luzon, Philippines • Type: Stratovolcano • One of the chain of composite volcanoes • 1,745 meters before eruption • 1,485 meters after eruption

  3. 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)

  4. 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

  5. Main Eruption June 15 • 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

  6. Before After

  7. 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

  8. After main eruption • Volcanic activity continued till 1992 • Ash eruptions • 1992: • Formation of Crater Lake • Lava Dome grew in Caldera • Crater Lake partly drowned in 2001

  9. Remains of a 2 by 3 mile caldera are still standing today • Agriculture was destroyed by the pyroclastic flow and tephra

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