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Thread: What places would you recommend for foreigners to visit and why?
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[quote=IBAUSSIE,279927]Correct baron you are right, you are not a volcanologist The Yellowstone Caldera is the largest volcanic system in North America. It has been termed a "super volcano" because the caldera was formed by exceptionally large explosive eruptions. Not Hydro volcanic explosion as in a MAAR type of volcanic eruption. The current caldera was created by a cataclysmic eruption that occurred 640,000 years ago, which released 240 cubic miles (1,000 km³) of ash, rock and pyroclastic materials. The most violent known eruption, which occurred 2.1 million years ago, ejected 588 cubic miles (2,450 km³) of volcanic material A smaller eruption ejected 67 cubic miles (280 km³) of material 1.2 million years ago, forming the Island Park Caldera [/quote]
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