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Volcano hidden in basin

New Zealand
A buried volcano discovered inside another volcano in Auckland has excited scientists, who say it is EXTREMELY RARE for two eruptions to have occurred at the same site in the Auckland volcanic field. Geologists found the buried volcano inside Panmure Basin - which is the mouth of a volcano that erupted about 28,000 years ago. The volcano would have been formed as a result of "fire fountaining" (where the magma spits up to the surface). The volcanic cone could be about 10,000 years old, much younger than its host, so the volcanic events would have been independent of each other. Of the 49 vents in the Auckland volcanic field, only Rangitoto was thought to have erupted twice. It is important to understand the clustering of volcanic eruptions from the Auckland volcanic field in time and space to prepare for future volcanic activity in the Auckland region.

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