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Kikai’s Secret: Scientists Discover Record-Breaking Volcanic Eruption From 7,300 Years Ago

Grim Reaper 6

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An in-depth study of the submerged volcanic deposits surrounding Japan’s Kikai caldera shed light on both the mechanisms of deposition and the scale of the event. Consequently, researchers from Kobe University determined that this eruption, occurring 7,300 years ago, was the largest volcanic eruption of the Holocene era by far. In their article published in the Journal of Volcanology and Geothermal Research, the geoscientists report that an eruption that happened 7,300 years ago ejected a large amount of volcanic products (ash, pumice, etc.) that settled in an area measuring more than 4,500 square kilometers around the eruption site. With a dense-rock equivalent volume of between 133 and 183 cubic kilometers, the event was the largest volcanic eruption to have taken place within the Holocene (the most recent 11,700 years of Earth’s history following the end of the last ice age) known to science.


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