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WHY THE TONGAN VOLCANIC ERUPTION WAS SO SHOCKING

Related references

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Article Geochemistry & Geophysics

Post-caldera volcanism reveals shallow priming of an intra-ocean arc andesitic caldera: Hunga volcano, Tonga, SW Pacific

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Summary: Intra-oceanic arcs are typically associated with intermediate cone volcanoes, but caldera volcanoes may also form in these settings. Hunga volcano is a large mainly submarine edifice that produced a series of caldera-forming eruptions. Numerous smaller-scale eruptions have occurred since then, forming new islands in 2009 and 2014/15. The composition of the recent eruptions is similar to the caldera-forming episodes.

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