Search results
Results From The WOW.Com Content Network
It was the world's largest known eruption over the past 70,000 years, ejecting 1170 cubic kilometres of material and causing several hundred square kilometres of surrounding land to collapse and form the caldera. The caldera later filled with water to form Lake Taupō, eventually overflowing to cause a huge outburst flood. [7]
Taupō began erupting about 300,000 years ago. The main eruptions that still affect the surrounding landscape are the dacitic Mount Tauhara eruption 65,000 years ago, the Oruanui eruption about 25,500 years ago, [2] [a] which is responsible for the shape of the modern caldera, and the Hatepe eruption, dated 232 ± 10 CE.
At the time of the eruption, the sea level was much lower than at present, and for over 100,000 years the Taupō Volcano had been mainly under Lake Huka, a larger lake than the present Lake Taupō. [1]: 6 Lake Huka was destroyed in the eruption, and other features of the local geography were changed significantly as outlined below.
A temporary lake above this blockage was formed over perhaps 2 to 3 years in the older Reporoa Caldera, maximising to an area of about 90 km 2 (35 sq mi) and a volume of about 2.5 km 3 (0.60 cu mi). [ 11 ] : 109 This broke through the ignimbrite dam in a massive flood with peak flow believed to be 17,000 m 3 /s, over 100 times the current river ...
[3]: 230–232 Comparison of large events in the Taupō volcanic zone over the last 1.6 million years at 3.8 km 3 (0.91 cu mi) per thousand years with Yellowstone Caldera's 2.1 million year productivity at 3.0 km 3 (0.72 cu mi) per thousand years favours Taupo.
Mount Tauhara is a dormant lava dome [1] volcano in New Zealand's North Island, reaching 1,088 metres (3,570 ft) above sea level.It is situated in the area of caldera rim overlap of the Whakamaru Caldera and Taupō Volcano towards the centre of the Taupō Volcanic Zone, which stretches from Whakaari / White Island in the north to Mount Ruapehu in the south. [2]
Lake Taupō, the largest lake in the North Island, is a volcanic caldera, responsible for rhyolitic eruptions about once every 1,000 years. [20] The largest eruption in the last 65,000 years was the cataclysmic Oruanui Eruption 26,500 years ago, producing 530 cubic kilometres of magma. The most recent eruption, around 233 AD was also a major ...
New Zealand's flora is still recovering from the last glacial maximum. About 2 Ma, extension and subduction under the North Island formed the Taupo Volcanic Zone, leading to the central North Island being covered in cobalt deficient soils which restrict forest development. One of the largest eruptions being the Lake Taupo eruption of 186 AD. [44]