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Okataina (Tarawera) vulcano

Aggiornato: 30 giu. 2022 19:00 GMT - Refresh
Lava domes 1111 m / 3,645 ft
New Zealand, -38.12°S / 176.5°E
Stato attuale: normal or dormant (1 di 5)
Last update: 20 dic 2021 (Smithsonian / USGS Weekly Volcanic Activity Report)

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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Stile eruttivo tipico: non specificato
Eruzioni del vulcano Okataina (Tarawera): 1981, 1886 (Tarawera eruption)
Lastest nearby earthquakes:
Data / oraMag. / Prof.Distanza/Ubicazione
mercoledì, 29 giugno 2022 GMT (1 sismo)
30 giu 2022 09:25 (GMT +12) (29 giu 2022 21:25 GMT)
2.2

149 km
35 km (22 mi)
15 km a sud ovest da Distretto di Rotorua, Nuova Zelanda
lunedì, 27 giugno 2022 GMT (1 sismo)
28 giu 2022 07:12 (GMT +12) (27 giu 2022 19:12 GMT)
2.2

163 km
42 km (26 mi)
30 km a sud da Distretto di Rotorua, Nuova Zelanda
sabato, 25 giugno 2022 GMT (2 sismi)
25 giu 2022 22:28 (GMT +12) (25 giu 2022 10:28 GMT)
2.2

158 km
34 km (21 mi)
11 km a sud ovest da Distretto di Rotorua, Nuova Zelanda
25 giu 2022 20:53 (GMT +12) (25 giu 2022 08:53 GMT)
1.5

142 km
31 km (19 mi)
9.4 km a nord ovest da Distretto di Rotorua, Nuova Zelanda
sabato, 18 giugno 2022 GMT (1 sismo)
18 giu 2022 18:19 (GMT +12) (18 giu 2022 06:19 GMT)
2.0

167 km
43 km (27 mi)
23 km a sud da Tauranga, Bay of Plenty, Nuova Zelanda

Sfondo

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 | NASA FIRMS
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