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News
Area near yesterday's steam eruption in Rotorua Lake (image: newshub.co.nz / twitter)
Monday, Nov 28, 2016
A small steam explosion (hydrothermal eruption) occurred yesterday in Lake Rotorua. A fountain of water was seen ejected to about 30 m. [read more]. ... [more]
 

Rotorua volcano

Caldera 757 m / 2,484 ft
New Zealand, -38.08°S / 176.27°E
Current status: normal or dormant (1 out of 5) | Reports
Rotorua volcano books
Last update: 28 Nov 2016
Typical eruption style: unspecified
Rotorua volcano eruptions: Pleistocene
TimeMag. / DepthDistanceLocation
Thu, 17 Jan
Thu, 17 Jan 22:45 UTCM 2.2 / 149.4 km19 kmNew Zealand
Thu, 17 Jan 22:12 UTCM 1.7 / 4.9 km24 kmNew Zealand
Thu, 17 Jan 20:40 UTCM 2.6 / 104.1 km12 kmNew Zealand
Thu, 17 Jan 17:00 UTCM 2.9 / 148.8 km5 kmNew Zealand
Thu, 17 Jan 05:49 UTCM 2.5 / 143 km2 kmNew Zealand
View all recent quakes

Background:

The 22-km-wide Rotorua caldera is the NW-most caldera of the Taupo volcanic zone. Rotorua is the only single-event caldera in the Taupo volcanic zone and was formed about 220,000 years ago following eruption of the >340 cu km rhyolitic Mamaku Ignimbrite. Although caldera collapse occurred in a single event, the process was complex and involved multiple collapse blocks. The major city of Rotorua lies at the south end of the lake that fills much of the caldera. Post-collapse eruptive activity, which ceased during the Pleistocene, has been restricted to lava dome extrusion without major explosive activity. The youngest eruptive activity at Rotorua consisted of the eruption of three lava domes less than 25,000 years ago. The major thermal areas of Takeke, Tikitere, Lake Rotokawa, and Rotorua-Whakarewarewa are located within the caldera or outside its rim, and the city of Rotorua lies within and adjacent to active geothermal fields.
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Smithsonian / GVP volcano information

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