Kōrero: Historic volcanic activity

Raoul and Denham calderas

Raoul and Denham calderas

Raoul Island has been shaped by volcanic activity and marine erosion. In the last few thousand years volcanism has been centred in the Raoul and Denham calderas. These are collapse structures that formed after major volcanic eruptions. Although the Denham caldera is largely offshore, its existence has been confirmed by marine seismic surveys.

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GNS Science

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Source: T. J. Worthington and others, ‘The Denham caldera on Raoul volcano: dacitic volcanism in the Tonga–Kermadec arc.’ Journal of Volcanology & Geothermal Research 90 (1999): 29–48

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Te tuhi tohutoro mō tēnei whārangi:

Eileen McSaveney, Carol Stewart and Graham Leonard, 'Historic volcanic activity - Raoul Island', Te Ara - the Encyclopedia of New Zealand, http://www.TeAra.govt.nz/mi/map/9847/raoul-and-denham-calderas (accessed 14 July 2024)

He kōrero nā Eileen McSaveney, Carol Stewart and Graham Leonard, i tāngia i te 12 Jun 2006