Supervolcanoes.

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Presentation transcript:

Supervolcanoes

Mt. Saint Helen Post-1980 Pre-1980

YELLOWSTONE Erupted 3 times in about last 2.1 millions years Last eruption was 640,000 years ago/2500 times MSH

Some Supervolcanoes LAKE TOBA, SUMATRA, INDONESIA LONG VALLEY, CALIFORNIA LAKE TAUPO, NEW ZEALAND VALLES CALDERA, NEW MEXICO AIRA, JAPAN SIBERIAN TRAPS YELLOWSTONE

LAKE TOBA, SUMATRA, INDONESIA Last eruption – 74,000 years ago 1,080 square miles/Can erupt 12 times Yellowstone's biggest eruption

LONG VALLEY, CALIFORNIA 200 square miles Erupted 250 mya/2000-3000 times as much lava as Mt. Saint Helens

LAKE TAUPO, NEW ZEALAND 485 square miles Last eruption – 26,500 years ago/Hundreds of times worse then MSH

VALLES CALDERA, NEW MEXICO 175 square miles Last eruption – 1.2 and 1.6 mya/2000 time MSH

AIRA, JAPAN 150 square miles Erupted 3 times in last 100 years