Story: Marine minerals

Chatham Rise

Chatham Rise

This is a digital image of the Chatham Rise, the large underwater plateau that stretches east of the South Island to the Chatham Islands. Along 400 kilometres of the plateau’s crest, conditions are ideal for the growth of phosphate. Phosphate is precipitated from sea water over very long periods of time, forming little bumps on the sea floor.

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How to cite this page:

Ian Wright, 'Marine minerals - Phosphates, ironsands and sands', Te Ara - the Encyclopedia of New Zealand, (accessed 27 January 2022)

Story by Ian Wright, published 12 Jun 2006