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This fascinating volcano was the source of the 1257 AD “mystery eruption”. It last erupted in 2016. Note how similar this volcano is to the “Crater Lake” volcano in Oregon

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Mario Rahmani

Does it have similar magma as Mount Mazama? I’ve read somewhere that what gives some of the most explosive volcanos their biggest bang is mixing of magma types, like Krakatau having both basaltic andesite and high silica rhyodacite, no clue how true that is. You can see evidence of this today at Anak Krakatau with a gigantic dome building period which just ended.

geologyhub

It definitely has a similar magma composition, and displaces qualities of dacite and basaltic andesite lava mixing