Okataina (Tarawera)

Lava domes 1111 m / 3,645 ft
New Zealand, -38.12°S / 176.5°E
Aktueller Status: normal / ruhend (1 von 5)
Last update: 20 Dez 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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Typische Tätigkeit: unspecified
Ausbrüche: 1981, 1886 (Tarawera eruption)
Letzte Erdbeben in der Nähe:
ZeitStärke / TiefeEntfernung / Lage
Mittwoch, 17. August 2022 GMT (1 Beben)
18. Aug. 2022 01:23 (GMT +12) (17. Aug. 2022 13:23 GMT)
2.6

141 km
35 km (22 mi)
13 km südwestlich von Rotorua, Bay of Plenty, Neuseeland
Montag, 15. August 2022 GMT (1 Beben)
16. Aug. 2022 01:42 (GMT +12) (15. Aug. 2022 13:42 GMT)
2.1

37 km
48 km (30 mi)
New Zealand
Freitag, 12. August 2022 GMT (1 Beben)
13. Aug. 2022 05:50 (GMT +12) (12. Aug. 2022 17:50 GMT)
2.0

94 km
35 km (22 mi)
New Zealand
Freitag, 5. August 2022 GMT (1 Beben)
6. Aug. 2022 00:19 (GMT +12) (5. Aug. 2022 12:19 GMT)
2.0

48 km
43 km (27 mi)
New Zealand

Beschreibung

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


Siehe auch: Sentinel hub | Landsat 8 | NASA FIRMS
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