MikeB4:

 

GV27:

 

Banks Peninsula is extinct and has been for millions of years. 

 

 

Volcanoes are never really extinct and they sometimes surprise eg Versuvius . I grant you knowledge was not that great back then but Island of Montserrat has what was thought to be an extinct volcano but it erupted in 1995 and a Volcano in Alaska that erupted in 2006 the first time since before 8000BCE

 

Banks Peninsula is really extinct, and unless there was to be massive upheaval in NZ geology / plate tectonics, then it's going to stay extinct.

The SI volcanoes came into existence when there was a subduction zone under the SI.  That's moved North over millions of years, the Australian plate now subducts under the Pacific plate South of NZ, the Pacific plate subducts under the Australian plate North of Wellington, where the plates meet along the Alpine Fault, it's  strike slip lateral movement, not subduction which fuels the NI volcanoes, nor rifting which causes volcanoes in places like Iceland, nor (so-far not fully explained) hotspots - like Hawaii or Yellowstone, which don't seem to be related to plate tectonics.  So there's no mechanism for a return of volcanos in the SI, and if something changed so that there was, then it would only be coincidence if volcanoes erupted in the same area.