Story: Rock, limestone and clay

Limestone

Limestone

This thin section of limestone from Raglan, South Auckland, shows the tiny sea creatures (in this case foraminifera) that make up the rock. Made of calcium carbonate, billions of skeletons and shells of ancient sea creatures have cemented together to form the rock. This process is continuous – off the shallow seas of New Zealand the limestone of the future is slowly forming as marine organisms die and sink to the sea floor.

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How to cite this page:

Carl Walrond, 'Rock, limestone and clay - Limestone', Te Ara - the Encyclopedia of New Zealand, http://www.TeAra.govt.nz/en/photograph/5222/limestone (accessed 6 July 2020)

Story by Carl Walrond, published 12 Jun 2006