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Ngapouri-Rotomahana Fault
The Ngapouri-Rotomahana Fault is a seismically and volcanically active area of the central North Island of New Zealand. Geology Coming from the south the Ngapouri-Rotomahana Fault can be interpreted as a splay of the Paeroa Fault beneath the still geothermally active volcano of Maungaongaonga which defines the most western aspect of the Okataina Volcanic Centre at the eastern margin of the Taupō Rift of the Taupō Volcanic Zone. Between the two active south-east dipping faults is a short segment of fault that is atypically north-west dipping and at 90 degrees to the rift zone axis. Since however the Taupō Rift itself takes a 20 degree change of direction to the south and the dominant rift widening is actually in the Bay of Plenty and has decreased by half to a displacement rate of 7.2 ± 0.4 mm/yr at this part of the rift system other interpretations might be more logical. Certainly there is a discontinuity, associated with the Okataina Volcanic Centre between the south ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake Rotomahana
Lake Rotomahana is an lake in northern New Zealand, located 20 kilometres to the south-east of Rotorua. It is immediately south-west of the dormant volcano Mount Tarawera, and its geography was substantially altered by a major 1886 eruption of Mount Tarawera. Along with the mountain, it lies within the Okataina caldera. The New Zealand Ministry for Culture and Heritage gives a translation of "warm lake" for , following Hochstetter. Before the 1886 eruption, only two small lakes were present in the current lake's basin. High quality pictures of the then Lake Rotomahana and associated tourist attractions were widely available in Europe by 1875. Following the eruption, a number of craters filled over the course of 15 years to form today's Lake Rotomahana. It is the most recently formed larger natural lake in New Zealand, and the deepest in the Rotorua district. The lake's northern shore lies close to the lower Lake Tarawera, separated by less than of terrain that is mostly mate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taupō Volcanic Zone
The Taupō Volcanic Zone (TVZ) is a volcanic area in the North Island of New Zealand that has been active for the past two million years and is still highly active. Mount Ruapehu marks its south-western end and the zone runs north-eastward through the Taupō and Rotorua areas and offshore into the Bay of Plenty. It is part of the larger Central Volcanic Region that extends further westward through the western Bay of Plenty to the eastern side of the Coromandel Peninsula and has been active for four million years. At Taupō the rift volcanic zone is widening east–west at the rate of about 8 mm per year while at Mount Ruapehu it is only 2–4 mm per year but this increases at the north eastern end at the Bay of Plenty coast to 10–15 mm per year. It is named after Lake Taupō, the flooded caldera of the largest volcano in the zone, the Taupō Volcano and contains a large central volcanic plateau as well as other landforms associated with its containing tecton ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Waiotapu
Waiotapu (Māori for "sacred waters") is an active geothermal area at the southern end of the Okataina Volcanic Centre, just north of the Reporoa caldera, in New Zealand's Taupo Volcanic Zone. It is 27 kilometres south of Rotorua. Due to dramatic geothermal conditions beneath the earth, the area has many hot springs noted for their colourful appearance, in addition to the Lady Knox Geyser, Champagne Pool, Artist's Palette, Primrose Terrace and boiling mud pools. These can mostly be viewed through access by foot, and in addition to a paid and curated experience, naturally forming hot springs appear around the area. The geothermal area covers 18 square kilometres. Prior to European occupation the area was the homeland of the Ngati Whaoa tribe who descended from those on the Arawa waka (canoe). The area has a long history as a tourist attraction. While the area has been protected as a scenic reserve since 1931, a tourist operation occupies part of the reserve under a concessi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1886 Eruption Of Mount Tarawera
In 1886, a violent eruption occurred at Mount Tarawera, near the city of Rotorua on New Zealand's North Island. At an estimated Volcanic Explosivity Index of 5, the eruption is the largest and deadliest in New Zealand during the past 500 years, which includes the entirety of European history in New Zealand. The eruption began in the early hours of 10 June 1886 and lasted for approximately 6 hours, causing a ash column, earthquakes, lightning, and explosions to be heard as far away as Blenheim in the South Island — more than 500 kilometers (300 miles) away. A rift formed across the mountain and surrounding area during the eruption, starting from the Wahanga peak at the mountain's northern end and extending in a southwesterly direction, through Lake Rotomahana and forming the Waimangu Volcanic Rift Valley. Damage in the local area was extensive, with ash fall blanketing nearby villages including Te Wairoa. The eruption is responsible for the presumed destruction of the f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maunga Kākaramea
Maunga Kākaramea (also known officially as Rainbow Mountain) is a high dacite volcano located between Rotorua and Taupō in the North Island Volcanic Plateau. It has multiple steaming features and a picturesque crater lake reached by a short walk from the nearest road and has a nearby geothermal area. Geography Maunga Kākaramea (meaning mountain of coloured earth, sometime called Maungakakaramea and also known in colloquial English as Mount Kakaramea - but do not confuse with Kakaramea another mountain) is located at the western borders of the Okataina Volcanic Centre. To the north west is the still active Waimangu Volcanic Rift Valley and closer to the south west the Maungakaramea hot springs. To the west across the Hakereteke stream (European settlement name Kerosene Creek) valley is the slightly higher peak of Maungaongaonga at . Geology Much of the ground has been altered by steam action, which is most marked on the southern slopes of the mountain, extending almost to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Tarawera
Mount Tarawera is a volcano on the North Island of New Zealand within the older but volcanically productive Ōkataina Caldera. Located 24 kilometres southeast of Rotorua, it consists of a series of rhyolitic lava domes that were fissured down the middle by an explosive basaltic eruption in 1886. This eruption was one of New Zealand's largest historical eruptions, and killed an estimated 120 people. The fissures run for about northeast-southwest. The volcano's component domes include Ruawahia Dome (the highest at 1,111 metres), Tarawera Dome and Wahanga Dome. It is surrounded by several lakes, most of which were created or drastically altered by the 1886 eruption. These lakes include Lakes Tarawera, Rotomahana, Rerewhakaaitu, Ōkataina, Ōkareka, Tikitapu / Blue and Rotokākahi / Green. The Tarawera River runs northeastwards across the northern flank of the mountain from Lake Tarawera. In 2000, the mountain was ceded to the Ngāti Rangitihi sub-tribe of Te A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1987 Edgecumbe Earthquake
The 1987 Edgecumbe earthquake measured 6.5 on the moment magnitude scale and struck the Bay of Plenty region of New Zealand at 1:42 pm on 2 March. The hypocentre was at a shallow depth of 8 km. The epicentre was south-south-east of the town of Matata, and north-north-west of Edgecumbe, on the Rangitaiki Plains (the floodplain of the Rangitaiki River, the Tarawera River and the Whakatane River). It was the most damaging earthquake New Zealand had experienced since the 1968 Inangahua earthquake. Main event The main shock was preceded for two weeks by earthquake swarms in two areas of the Bay of Plenty. A swarm started on 21 February off-shore from Maketu, near Te Puke, 40 kilometres from the main shock's epicentre, and another swarm started on 26 February between Matata and Thornton, very close to the epicentre. Then there was a 5.2 earthquake at 1:35 pm on 2 March, followed by the main shock seven minutes later. The main shock appears to have actually consiste ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bay Of Plenty
The Bay of Plenty ( mi, Te Moana-a-Toi) is a region of New Zealand, situated around a bight of the same name in the northern coast of the North Island. The bight stretches 260 km from the Coromandel Peninsula in the west to Cape Runaway in the east. The Bay of Plenty Region, governed by the Bay of Plenty Regional Council, incorporates several large islands in the bay, in addition to the mainland area. Called ''Te Moana-a-Toi'' (the Sea of Toi) in the Māori language after Toi, an early ancestor, the name 'Bay of Plenty' was bestowed by James Cook in 1769 when he noticed the abundant food supplies at several Māori villages there, in stark contrast to observations he had made earlier in Poverty Bay. History According to local Māori traditions, the Bay of Plenty was the landing point of several migration canoes that brought Māori settlers to New Zealand. These include the '' Mātaatua'', '' Nukutere'', '' Tākitimu'', '' Arawa'' and '' Tainui'' canoes. Many of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taupō Rift
The Taupō Rift is the seismically active rift valley containing the Taupō Volcanic Zone, central North Island of New Zealand. Geology The Taupō Rift (Taupo Rift) is a intra-arc continental rift resulting from an oblique convergence in the Hikurangi subduction zone. The present young, modern Taupō Rift is defined by events between 25,000 and 350,000 years and the old Taupō Rift system which can be defined by a gravity anomaly is now located more to the north being created between 350,000 and 2 million years and is about wide. Consensus does not yet exist with regard to the cause of the Taupō Rift's extension or the exceptional volcanic productivity of the associated Taupō Volcanic Zone. Its geology and landforms are of worldwide interest and it contains multiple significant faults and volcanoes with some of the volcanoes having potential for worldwide impact. Volcanic context The recent volcanism of the Taupō Volcanic Zone has been divided into three segments with a cent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maungaongaonga
Maungaongaonga is an high dacite volcano located between Rotorua and Taupō in the North Island Volcanic Plateau. The area of the mountain is a scenic reserve and some of its southern slopes are highly geothermally active. Geography Maungaongaonga is located at the far western border of the Okataina Volcanic Centre. To the east across the Hakereteke stream valley (historically called Kerosene creek) is the slightly lower but more striking Maunga Kākaramea or Rainbow mountain which is often steaming from its geothermal field. To the North west is the still active Waimangu Volcanic Rift Valley. The main peak of the volcano has at about to its south a large extrusion dome (trig B27G) that is high. Also to the south, about the level, are pumice raft blocks on the valley margins, as for a period following the Taupo eruption of 232 CE the whole area of lowland extending towards Taupo and the present Waikato River was a lake. Geology There have been quite large hydrother ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Holocene
The Holocene ( ) is the current geological epoch. It began approximately 11,650 cal years Before Present (), after the Last Glacial Period, which concluded with the Holocene glacial retreat. The Holocene and the preceding Pleistocene together form the Quaternary period. The Holocene has been identified with the current warm period, known as MIS 1. It is considered by some to be an interglacial period within the Pleistocene Epoch, called the Flandrian interglacial.Oxford University Press – Why Geography Matters: More Than Ever (book) – "Holocene Humanity" section https://books.google.com/books?id=7P0_sWIcBNsC The Holocene corresponds with the rapid proliferation, growth and impacts of the human species worldwide, including all of its written history, technological revolutions, development of major civilizations, and overall significant transition towards urban living in the present. The human impact on modern-era Earth and its ecosystems may be considered of global ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
_(1873)_(14782100062).jpg "Click for more on -> Lake Rotomahana")
