How far does the New Zealand fautline extend?

Answer 1

The Great Alpine Fault has its origins in the far south at the mid-ocean ridge - perhaps as an extension of the transcurrent fault associated with the m-o-r.

In the north, it joins up with the Kermadec trench and proceeds northwards.

There are many smaller fault lines throughout the country, many still active.

New Zealand is tectonically unusual in that it straddles the boundary of two plates. These have caused the mountain uplift of the Southern Alps.