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Story: Volcanoes

Volcanic ash in lakes

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Volcanic ash in lakes

Scientists examine a long sample (core) of sediment from beneath Lake Maratoto, which is near Hamilton airport, in the North Island’s volcanic zone. Lake sediments from this region typically have a large amount of volcanic ash (light coloured), from sporadic eruptions. The inset shows the thin white ash layers interspersed with darker, organic mud from the lake floor.

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University of Waikato

by David J. Lowe

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How to cite this page

Richard Smith, David J. Lowe and Ian Wright, Volcanoes – Tephra layers – a record of past eruptions, Te Ara – the Encyclopedia of New Zealand, https://teara.govt.nz/en/photograph/8733/volcanic-ash-in-lakes (accessed 4 June 2026).

Story by Richard Smith, David J. Lowe and Ian Wright, published 2 March 2009.