Re: So how was New Zealand created?
"If the country is basically a mountain range created by the subduction of one plate under another tectonic plate"
It's worse than that. To copy something from Otago Uni geology,
http://www.otago.ac.nz/geology/research/structural-geology/alpine-fault/nz-tectonics.html
"To the northeast of New Zealand, and underneath North Island, the Pacific Plate is moving towards, and being subducted below the Australian Plate. To the south of New Zealand, and underneath Fiordland, the two plates are also moving toward each other but here the Australian Plate is being subducted under the Pacific Plate."
Quite a bit of torque involved, it would appear ... makes life interesting, more than a little!!!
BTW, has anyone actually recorded the sound of an earthquake? I want to transcribe it for a percussion piece I tried writing after the Christchurch Sept 4 2010 earthquake. TIA