Rotorua Caldera

Rotorua Caldera

Infobox Mountain
Name=Rotorua
Photo=Lake_rotorua.jpg
Caption=NASA image of Lake Rotorua and caldera
Elevation= Convert|757|m|ft|0|abbr=on
Location=North Island, New Zealand
Prominence =
Coordinates = coord|38.08|S|176.27|E|type:mountain
Topographic

Type =Caldera
Volcanic_Arc/Belt=Taupo Volcanic Zone
Age =
Last eruption = Pleistocene

The Rotorua Caldera is one of several large volcanoes located in the Taupo Volcanic Zone on the North Island of New Zealand. Its last major eruption was about 240,000 years ago. At this time, the Mamaku ignimbrite, covering about 4000 square km, was deposited. After the eruption, the magma chamber underneath the volcano collapsed. The circular depression left behind is the current caldera, about 22 km (14 miles) in diameter and now occupied by Lake Rotorua. Mokoia Island, close to the centre of the lake, is a rhyolite dome.

References

*

External links

* [http://volcano.und.nodak.edu/vwdocs/volc_images/australia/new_zealand/rotorua.html Rotorua at Volcano World]


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