Kōrero: Soils

Coloured soils

Coloured soils

Bright orange or red subsoils are the result of a long period of wetting and drying of iron compounds that causes them to oxidise or ‘rust’. In the topsoil, these colours are masked by dark organic matter from decomposed plant and microbial material. This yellow-brown subsoil from Karori Road, Wellington, could have formed in the present climate. However, the lower pink-red horizon, which appears to have been buried by the surface material, would have required a more tropical climate to develop. It may be up to 500,000 years old.

Te whakamahi i tēnei tūemi

Te Ara - The Encyclopedia of New Zealand
Photograph by Alastair McLean

This item has been provided for private study purposes (such as school projects, family and local history research) and any published reproduction (print or electronic) may infringe copyright law. It is the responsibility of the user of any material to obtain clearance from the copyright holder.

Ngā whakaahua me ngā rauemi katoa o tēnei kōrero

Te tuhi tohutoro mō tēnei whārangi:

Allan Hewitt, 'Soils - Soil features', Te Ara - the Encyclopedia of New Zealand, http://www.TeAra.govt.nz/mi/photograph/12272/coloured-soils (accessed 4 March 2024)

He kōrero nā Allan Hewitt, i tāngia i te 24 Sep 2007