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13-667: Lake Rotoiti is the name of two lakes in New Zealand: Lake Rotoiti (Bay of Plenty) , in the North Island Lake Rotoiti (Tasman) , in the South Island See also [ edit ] Rotoiti Caldera [REDACTED] Topics referred to by the same term This disambiguation page lists articles about distinct geographical locations with the same name. If an internal link led you here, you may wish to change

26-531: A nearby vent in the Ōkataina Caldera that had a separate magma source and erupted Earthquake Flat breccia . Haroharo Caldera In the north the Haroharo Caldera has been mapped as extending from the eastern half of Lake Rotoiti to the western border of Lake Rotoma . Its southern extent was defined by the Tarawera volcano . A recent analysis is consistent with the south western structural boundary of

39-687: Is a lake in the Bay of Plenty region of New Zealand . It is the northwesternmost in a chain of lakes formed within the Okataina Caldera . The lake is close to the northern shore of its more famous neighbour, Lake Rotorua , and is connected to it via the Ohau Channel . It drains to the Kaituna River , which flows into the Bay of Plenty near Maketu . The full name of the lake is Te Rotoiti-kite-a-Īhenga , which in

52-509: Is the highest it has been in decades, and it is on track to meet targets set by the Program to meet community expectations. Lake Rotoiti has thermal hot-spring baths on the southern shore which are accessible by boat. Its joint drainage with Lake Rotorua through the Ohau Channel depends upon the sinking Tikitere graben which is also very geothermally active on the south eastern margins of

65-633: The Haroharo vent line , that is parallel and to the north of the Mount Tarawera vent line and also within the Ōkataina Caldera. There has been a large amount of dome infilling that refer to the Haroharo name, but the term Ōkataina complex volcano is felt by many to be a better name than the Haroharo volcano to understand the processes that have happened in this portion of the Taupō Volcanic Zone. Within

78-616: The Māori language means "The Small Lake Discovered by Īhenga ", the Māori explorer also credited with discovering Lake Rotorua. Legend says that the lake was named as such because when Ihenga first saw it, he could only see a small part of it and thought the lake was a lot smaller. Since the 1960s, the quality of lake water has been negatively affected by inflows of nitrogen rich water from Lake Rotorua, agricultural run-off from surrounding farms and seepage from domestic septic tanks . The effects of this included an almost permanent algal bloom in

91-478: The Rotoiti Caldera . As postulated, this caldera does not house the lake. The age of this large eruption of more than 100 cubic kilometres (24 cu mi) of magma was historically ill-defined due to several complexities and the literature gives a range from 40,000 years to 64,000 years ago with 47,400 ± 1500 years ago being recently quoted. What is not now challenged is that this was a paired eruption with

104-422: The Haroharo vent line there was a VEI-5 volcanic eruption about 6060 BCE producing about 17 km (4.1 cu mi) of eruptive material and one about 2000 years later that produced 13 km (3.1 cu mi) of material. With its linear parallel young vent alignment to those of the similarly young in geological terms, Tarawera volcano, and related magma sources, this means it is now usually regarded as

117-469: The Matahina and Rotoiti sub-calderas which were formed in single eruption sequences. These boundaries relate to events that happened before about 45,000 years ago. It is therefore not regarded now as a caldera in its own right formed by one single event and there have been many attempts to rationalise the literature from a descriptor used since at least 1962. There have been multiple significant eruptions from

130-546: The Okere arm of the lake and choking lake weed growth in other still areas of the lake. A barrier to divert the nutrient rich waters of Lake Rotorua into the Kaituna River was completed in late 2008. The Bay of Plenty Regional Council is expected to see improvement in lake water quality within five years. The Rotorua Te Arawa Lakes Program reported in 2013 that the intervention has significantly improved water quality. Water quality

143-420: The lake. There appear to have been Rotoiti eruptive vents at the eastern end of the lake and although these are part of the Ōkataina Volcanic Centre they are believed to be in an area of collapse subsidence outside the north western margins of the Ōkataina Caldera itself. This region of the caldera was at one time termed the Haroharo Caldera , but has been renamed in the more standard major event fashion to

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156-407: The link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Lake_Rotoiti&oldid=1147402894 " Category : Place name disambiguation pages Hidden categories: Short description is different from Wikidata All article disambiguation pages All disambiguation pages Lake Rotoiti (Bay of Plenty) Lake Rotoiti

169-664: The older single event caldera's being in the eastern portions of Lake Tarawera . Both the Okareka Embayment and the Tarawera Volcanic Complex are adjacent, so many, especially older maps, had these features overlapping the Haroharo Caldera or Okataina caldera as part of the Haroharo volcanic complex or Ōkataina volcanic centre . The Haroharo Caldera was within the older and larger Ōkataina Caldera and its boundaries in geological terms are related mainly to

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