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Jimmi Carter Gultom

Orang yang selalu berubah ke arah yang lebih baik

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Articles posted by Jimmi Carter Gultom


The Incredible Lake Toba and Samosir Island

25 January 2012

Between 69,000 and 77,000 years ago, one of the most spectacular geological events in earth’s history occurred on the island of Sumatra: the mega eruption of Mount Toba Supervolcano. The eruption was the latest in a series of at least three caldera-forming eruptions that occurred at the volcano, with earlier calderas having formed around 700,000 and 840,000 years ago. The last eruption was estimated to have Volcanic Explosivity Index (VEI) of 8, - described as mega-colossal- and is still believed to be the largest explosive eruption anywh