Approximate location and outline (white) of Ohakuri Caldera. Known surrounding Ohakuri ignimbrite (yellow) is approximately as shown. The relationship to the inactive southern portion (red dots) and active northern portion (red line) of the Horohoro Fault may be important. The old Taupō Rift (light yellow shading), modern Taupō Rift (light red shading) and Hauraki Rift (light purple shading) are shown for context. Landmarks such as Lake Taupō, Lake Rotorua, Mount Tarawera are shown for orientation. Within the caldera the dome Ngautuku is identified.
The Ohakuri Caldera ( also Ōhakuri Caldera) was formed in a paired single event eruption of Ohakuri ignimbrite and is located in the Taupō Volcanic Zone on the North Island of New Zealand. Its significance was first recognised in 2004, as the geology of the area had been misunderstood until then. The paired eruption resulted in a very large eruption sequence in the Taupō Volcanic Zone about 240,000 years ago that included the formation of Lake Rotorua and eruption of the Mamaku ignimbrite.[2]
^Bégué, F.; Deering, C. D.; Gravley, D. M.; Kennedy, B. M.; Chambefort, I.; Gualda, G. A. R.; Bachmann, O. (2014). "Extraction, Storage and Eruption of Multiple Isolated Magma Batches in the Paired Mamaku and Ohakuri Eruption, Taupo Volcanic Zone, New Zealand". Journal of Petrology. 55 (8): 1653–1684. doi:10.1093/petrology/egu038. hdl:20.500.11850/88102.
^Gravley, Darren MClurg (2004). "The Ohakuri pyroclastic deposits and the evolution of the Rotorua-Ohakuri volcanotectonic depression" (PDF). Retrieved 2022-08-17.
The OhakuriCaldera ( also ŌhakuriCaldera) was formed in a paired single event eruption of Ohakuri ignimbrite and is located in the Taupō Volcanic Zone...
smaller southerly eruption from the same mush body that also feed the OhakuriCaldera. Ignimbrite, up to 145 metres (476 ft) thick covering about 3,100 km2...
Lake Ohakuri (New Zealand) Lake Okataina (New Zealand) Lake Rotorua (New Zealand) Lake Taupo (New Zealand) Maroa (New Zealand) Moku‘āweoweo Caldera on Mauna...
32 sq mi) and had a population of 48 in the 2018 census. Ohakuri Caldera Hariss, Gavin. "Lake Ohakuri, Waikato". topomap.co.nz. NZ Topo Map. "Māori Maps". maorimaps...
Waikato River at Ātiamuri. At Ātiamuri the OhakuriCaldera which had a paired eruption with the Rotorua Caldera is to its immediate north. The eastern boundary...
The Whakamaru Caldera was created in a massive supereruption 335,000 years ago and is approximately 30 by 40 km (19 by 25 mi) in size and is located in...
eruption. It has been speculated that just after the paired Rotorua Caldera and OhakuriCaldera eruptive sequences of 240,000 years ago when the magma mush had...
473–489. doi:10.5575/geosoc.2018.0038. The up is covered with Shikotsu caldera formation deposits. "Volcanic activities and eruption sequence of the large-scale...
and Eruption of Multiple Isolated Magma Batches in the Paired Mamaku and Ohakuri Eruption, Taupo Volcanic Zone, New Zealand". Journal of Petrology. 55 (8):...
Neither is the caldera the source of the Ohakuri Ignimbrite as previously speculated. This comes from the OhakuriCaldera Pokai ignimbrite (0.275 ± 0.01 Ma)...
Mangakino caldera complex (other names are Mangakino volcanic center, Mangakino Caldera) is the westernmost and one of oldest extinct rhyolitic caldera volcanoes...
and Eruption of Multiple Isolated Magma Batches in the Paired Mamaku and Ohakuri Eruption, Taupo Volcanic Zone, New Zealand". Journal of Petrology. 55 (8):...
original river level, was placed and consolidated. The filling of Lake Ohakuri began on 19 January 1961 and was completed in 14 days. Two of the world's...
Global Information
