Older Volcanoes in The Area
Taranaki sits upon the remains of three older volcanic complexes which lie to the northwest. The Indo-Australian Plate is slowly moving relative to the magma source which feeds these volcanoes. This trend is reflected in Fanthams Peak, the newer secondary cone on the southeast side of Taranaki.
The oldest volcanic remnants consist of a series of lava plugs: Paritutu rock (156m), which forms part of New Plymouth's harbour, and the Sugar Loaf Islands close offshore. These have been dated at 1.75 million years.
On the coast 15 km southwest of New Plymouth is the Kaitake range (rising to 682m), last active approximately 500,000 years ago.
Nearest to Taranaki is the Pouakai complex. Pouakai may have originated around the same time as Kaitake but remained active until about 240,000 years ago. Much of Pouakai's large ringplain was obliterated by the Egmont Volcano, the hills near Eltham being the only remnant to the south.
Read more about this topic: Mount Taranaki
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