Okataina (Tarawera) volcano

Lava domes 1111 m / 3,645 ft
New Zealand, -38.12°S / 176.5°E
Current status: normal or dormant (1 out of 5)
Last update: 26 Mar 2019

Mount Tarawera, located 24 km SE of Rotorua, is the main vent of the Okataina volcanic complex. Tarawera produced one of New Zealand's largest historic eruptions in 1886, when a violent explosive basaltic eruption occurred that killed an estimated 120 people. The fissures that opened up run for about 17 kilometres northeast-southwest.

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Typical eruption style: unspecified
Okataina (Tarawera) volcano eruptions: 1981, 1886 (Tarawera eruption)

Latest nearby earthquakes

TimeMag. / DepthDistance/Location
Mon, 21 Jun 2021 (GMT) (2 earthquakes)
21 Jun 2021 09:27:34 GMT
3.2

173 km
43 km (27 mi)
Western Bay of Plenty District, 33 km south of Tauranga, New Zealand
21 Jun 2021 00:28:43 GMT
2.9

141 km
38 km (24 mi)
16 km west of Rotorua, Bay of Plenty, New Zealand
Sun, 20 Jun 2021 (GMT) (2 earthquakes)
20 Jun 2021 20:02:24 GMT
2.3

162 km
30 km (19 mi)
7.5 km southwest of Rotorua, Bay of Plenty, New Zealand
20 Jun 2021 17:32:51 GMT
2.1

131 km
26 km (16 mi)
Western Bay of Plenty District, 42 km southeast of Tauranga, New Zealand
Sat, 19 Jun 2021 (GMT) (1 earthquake)
19 Jun 2021 13:18:14 GMT
1.6

5 km
23 km (14 mi)
23 km southwest of Whakatane, Bay of Plenty, New Zealand

Background

The massive, dominantly rhyolitic Okataina Volcanic Centre is surrounded by extensive ignimbrite and pyroclastic sheets produced during multiple caldera-forming eruptions. Numerous lava domes and craters erupted from two subparallel NE-SW-trending vent lineations form the Haroharo and Tarawera volcanic complexes.
Lava domes of the Haroharo complex, at the northern end of the Okataina Volcanic Centre, occupy part of the 16 x 26 km Pleistocene Haroharo caldera, which formed incrementally between 300,000 and 50,000 years before present (BP). The oldest exposed rocks on the caldera floor are about 22,000 years old. The Tarawera complex at the southern end of Okataina consists of 11 rhyolitic lava domes and associated lava flows. The oldest domes were formed as late as about 15,000 years BP, and the youngest were formed in the Kaharoa eruption about 800 years BP. The NE-SW Tarawera vent lineation extends from the two dacitic cones of Maungaongaonga and Mangakakaramea on the SW to Mount Edgecumbe on the NE. Construction of the Haroharo and Tarawera complexes impounded lakes Rotoiti, Totoehu, Okataina, and Tarawera against the outer margins of the Okataina ring structure. A major hydrothermal area is located at Waimangu; the world-renowned Pink and White Terrace siliceous sinter deposits were destroyed during the major basaltic explosive eruption of 1886.
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Smithsonian / GVP volcano information


See also: Sentinel hub | Landsat 8
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