Ōkataina Caldera
Volcanic caldera in New Zealand / From Wikipedia, the free encyclopedia
Ōkataina Caldera (Ōkataina Volcanic Centre, also spelled Okataina) is a volcanic caldera and its associated volcanoes located in Taupō Volcanic Zone of New Zealand's North Island. It has several actual or postulated sub calderas. The Ōkataina Caldera is just east of the smaller separate Rotorua Caldera and southwest of the much smaller Rotomā Embayment which is usually regarded as an associated volcano. It shows high rates of explosive rhyolitic volcanism although its last eruption was basaltic. The postulated Haroharo Caldera contained within it has sometimes been described in almost interchangeable terms with the Ōkataina Caldera or volcanic complex or centre and by other authors as a separate complex defined by gravitational and magnetic features.[3]: 14 .[lower-alpha 1] Since 2010 other terms such as the Haroharo vent alignment, Utu Caldera, Matahina Caldera, Rotoiti Caldera and a postulated Kawerau Caldera are often used,[2] rather than a Haroharo Caldera classification.[3]: 2
Ōkataina Caldera | |
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Ōkataina Volcanic Centre, Okataina Caldera, Okataina Volcanic Centre | |
Highest point | |
Coordinates | 38°10′S 176°30′E |
Dimensions | |
Length | 28 km (17 mi)[1] |
Width | 15 km (9.3 mi)[1] |
Geography | |
Country | New Zealand |
Region | Bay of Plenty |
Geology | |
Age of rock | Pleistocene - Meghalayan (0.625–0.0001 Ma)[2] |
Mountain type | Caldera |
Volcanic region | Taupō Volcanic Zone |
Last eruption | 1886 Tarawera, 1973 Hydrothermal in Waimangu Volcanic Rift Valley |
Climbing | |
Access | State Highway 5 (New Zealand) |