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Hurupaki Mountain
Hurupaki Mountain is in Kamo, Whangarei, New Zealand. The centre of Hurupaki Mountain lies between Three Mile Bush Road and Dip Road, approximately 1.5 kilometres west of Kamo township. Hurupaki Mountain is visible from State Highway 1.
==Characteristics==
Hurupaki Mountain is a high scoria cone that is thought to be about 300,000 years old. It is part of the Puhipuhi-Whangarei volcanic field. This volcanic area is similar to the Auckland volcanic field in that it has formed over a type of hot spot in the mantle, i.e. not at a current plate boundary.
The Whangarei Field is older than the Auckland field, in fact Hurupaki is probably one of the younger centres. There is another basaltic field in Northland, and that is the Kaikohe-Bay of Islands field. That also has some young scoria cones and lava flows. Both of these Northland Fields are older than the Auckland Field.
Hurupaki Mountain is a steep sided, partly bush-covered scoria cone. It is 1–2 km in diameter and 170m high, and has been extensively quarried on the west side. One quarry exposes an eruption sequence showing that magma variation occurred during eruption. The east side shows an excellent example of a young scoria cone. A multivented cone forms a smaller knoll approximately 400 metres to the east, less than 150 metres high, on which a few houses stand. This is an east most cone of a group of three centres: (east to west) Hurupaki, Rawhitiroa and Ngararatunua.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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