Story: Rock, limestone and clay

Greymouth Harbour entrance

Greymouth Harbour entrance

The mouth of the Grey River serves as an entrance to the port of Greymouth. Breakwaters on the banks protect the entrance and funnel the river into the sea, helping to scour out a channel for boats. The breakwaters are made of huge blocks of quarried rock, known as rip rap.

Using this item

GNS Science
Reference: CN35937/7
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:

Carl Walrond, 'Rock, limestone and clay - Sources and uses', Te Ara - the Encyclopedia of New Zealand, (accessed 16 April 2024)

Story by Carl Walrond, published 12 Jun 2006