Story: Volcanoes

Mayor Island

Mayor Island

Mayor Island (Tūhua) is the top of a large rhyolite volcano in the western Bay of Plenty. The central ring of cliffs marks the edge of a caldera formed by an explosive eruption about 7,000 years ago. The black volcanic glass known as obsidian is found in some lava flows on the island.

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GNS Science
Reference: CN9167/9
Photograph by Lloyd Homer

Permission of GNS Science must be obtained before any use of this image.

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How to cite this page:

Richard Smith, David J. Lowe and Ian Wright, 'Volcanoes - Pacific Ring of Fire', Te Ara - the Encyclopedia of New Zealand, http://www.TeAra.govt.nz/en/photograph/8697/mayor-island (accessed 16 October 2019)

Story by Richard Smith, David J. Lowe and Ian Wright, published 12 Jun 2006