Sasha Says - Kaikoura Orogeny - a podcast by Whitestone Geopark

Podcast summary:

An orogeny is a mountain building process.  

The Kaikoura Orogeny is the mountain building process that started 25 million years ago when movement along the Pacific and Indo-Australian Plates began their uplift.  Continential crust thickened and eventually around 5 million years ago the Southern Alps were uplifted.  

This mountain building phase continues today.

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Website of Whitestone Geopark