Banks Peninsula
Banks Peninsula comprises the eroded remnants of two large stratovolcanoes (Lyttelton formed first, then Akaroa). These formed through intraplate volcanism through continental crust between approximately eleven and eight million years ago (Miocene). The peninsula formed as offshore islands, with the volcanoes reaching to about 1,500 m above sea level. Two dominant craters were eroded, then flooded, to form the Lyttelton and Akaroa Harbours. The portion of crater rim lying between Lyttelton Harbour and Christchurch city forms the Port Hills.
Read more about this topic: Volcanology Of New Zealand, Volcanic Areas
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