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Rangitoto And Auckland 31-03-2012 14-03-10 - Cropped To Tamaki River
Rangitoto Island is a volcanic island in the Hauraki Gulf near Auckland, New Zealand. The wide island is a symmetrical shield volcano cone capped by central scoria cones, reaching a height of . Rangitoto is the youngest and largest of the approximately 50 volcanoes of the Auckland volcanic field, having erupted in two phases about 1450 CE and 1500 CE and covering an area of . It is separated from the mainland of Auckland's North Shore by the Rangitoto Channel. Since World War II, it has been linked by a causeway to the much older, non-volcanic Motutapu Island. is Māori for 'Bloody Sky',What happened to local Maori? (from the Rangitoto page on the website) with the name ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Auckland
Auckland ( ; ) is a large metropolitan city in the North Island of New Zealand. It has an urban population of about It is located in the greater Auckland Region, the area governed by Auckland Council, which includes outlying rural areas and the islands of the Hauraki Gulf, and which has a total population of as of It is the List of cities in New Zealand, most populous city of New Zealand and the List of cities in Oceania by population, fifth-largest city in Oceania. The city lies between the Hauraki Gulf to the east, the Hunua Ranges to the south-east, the Manukau Harbour to the south-west, and the Waitākere Ranges and smaller ranges to the west and north-west. The surrounding hills are covered in rainforest and the landscape is dotted with 53 volcanic centres that make up the Auckland Volcanic Field. The central part of the urban area occupies a narrow isthmus between the Manukau Harbour on the Tasman Sea and the Waitematā Harbour on the Pacific Ocean. Auckland is one of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rangitoto Island And Motutapu Island
Rangitoto Island is a volcanic island in the Hauraki Gulf near Auckland, New Zealand. The wide island is a symmetrical shield volcano cone capped by central scoria cones, reaching a height of . Rangitoto is the youngest and largest of the approximately 50 volcanoes of the Auckland volcanic field, having erupted in two phases about 1450 CE and 1500 CE and covering an area of . It is separated from the mainland of Auckland's North Shore by the Rangitoto Channel. Since World War II, it has been linked by a causeway to the much older, non-volcanic Motutapu Island. is Māori for 'Bloody Sky',What happened to local Maori? (from the Rangitoto page on the website) with the name ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orchids On Rangitoto
Orchids are plants that belong to the family Orchidaceae (), a diverse and widespread group of flowering plants with blooms that are often colourful and fragrant. Orchids are cosmopolitan plants that are found in almost every habitat on Earth except glaciers. The world's richest diversity of orchid genera and species is in the tropics. Orchidaceae is one of the two largest families of flowering plants, the other being the Asteraceae. It contains about 28,000 currently accepted species in 702 genera. The Orchidaceae family encompasses about 6–11% of all species of seed plants. The largest genera are ''Bulbophyllum'' (2,000 species), ''Epidendrum'' (1,500 species), ''Dendrobium'' (1,400 species) and ''Pleurothallis'' (1,000 species). It also includes ''Vanilla'' (the genus of the vanilla plant), the type genus ''Orchis'', and many commonly cultivated plants such as ''Phalaenopsis'' and ''Cattleya''. Moreover, since the introduction of tropical species into cultivation in th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pahoehoe
Lava is molten or partially molten rock (magma) that has been expelled from the interior of a terrestrial planet (such as Earth) or a moon onto its surface. Lava may be erupted at a volcano or through a fracture in the crust, on land or underwater, usually at temperatures from . The volcanic rock resulting from subsequent cooling is often also called ''lava''. A lava flow is an outpouring of lava during an effusive eruption. (An explosive eruption, by contrast, produces a mixture of volcanic ash and other fragments called tephra, not lava flows.) The viscosity of most lava is about that of ketchup, roughly 10,000 to 100,000 times that of water. Even so, lava can flow great distances before cooling causes it to solidify, because lava exposed to air quickly develops a solid crust that insulates the remaining liquid lava, helping to keep it hot and inviscid enough to continue flowing. Etymology The word ''lava'' comes from Italian and is probably derived from the Latin word ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lava Tube
A lava tube, more rarely called a pyroduct, is a 'roofed conduit through which molten lava travels away from its vent'. If lava in the tube drains out, it will leave an empty cave. Lava tubes are common in low-viscosity volcanic systems. Lava tubes are important as they are able to transport molten lava much further away from the eruptive vent than lava channels. A tube-forming lava flow can emplace on longer distance due to the presence of a solid crust protecting the molten lava from atmospheric cooling. Lava tubes are often considered when preparing hazard maps or managing an eruptive crisis. Formation A lava tube is a type of lava cave formed when a low-viscosity lava flow develops a continuous and hard crust, which thickens and forms a roof above the still-flowing lava stream. Three main formation mechanisms have been described: (1) roofing over a lava channel, (2) pāhoehoe lobe extension or (3) lava flow inflation. # When it erupts from a vent, lava usually flow ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clinker Brick
Clinker bricks are partially-vitrified bricks used in the construction of buildings. Clinker bricks are produced when wet clay bricks are exposed to excessive heat during the firing process, sintering the surface of the brick and forming a shiny, dark-colored coating. Clinker bricks have a blackened appearance, and they are often misshapen or split. Clinkers are so named for the metallic sound they make when struck together. Clinker bricks are denser, heavier, and more irregular than standard bricks. Clinkers are water-resistant and durable, but have higher thermal conductivity than more porous red bricks, lending less insulation to climate-controlled structures. The brick-firing kilns of the early 20th century—called brick clamps or "beehive" kilns—did not heat evenly, and the bricks that were too close to the fire emerged harder, darker, and with more vibrant colors, according to the minerals present in the clay. Initially, these clinkers were discarded as defectiv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Auckland City Council
Auckland City Council was the local government authority for Auckland City, New Zealand, from 1989 to 1 November 2010, when it and Auckland's six other city and district councils were amalgamated to form the Auckland Council. It was an elected body representing the 404,658 residents (2006 census) of the city, which included some of the Hauraki Gulf islands, such as Waiheke Island and Great Barrier Island. It was chaired by the Mayor of Auckland City. Elections The councillors and the mayor of Auckland City were elected every three years. In the 2007 elections, the voter turnout was 39.4%, down from 48% in 2004 and 43% in 2001. Functions Amongst its other functions, the city council administered more than 700 parks and reserves throughout the city (2008 data).Auckland City Council Annual Report Summary 2007/2008 – Auckland City Council, 3 October 2008 It also had, amongst other things, 2214 km of footpaths, though these were often in bad condition (30% being rat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rangitoto Island Lava Cave 1
Rangitoto Island is a volcanic island in the Hauraki Gulf near Auckland, New Zealand. The wide island is a symmetrical shield volcano cone capped by central scoria cones, reaching a height of . Rangitoto is the youngest and largest of the approximately 50 volcanoes of the Auckland volcanic field, having erupted in two phases about 1450 CE and 1500 CE and covering an area of . It is separated from the mainland of Auckland's North Shore by the Rangitoto Channel. Since World War II, it has been linked by a causeway to the much older, non-volcanic Motutapu Island. is Māori for 'Bloody Sky',What happened to local Maori? (from the Rangitoto page on the website) with the name ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rangitoto Lighthouse
Rangitoto Lighthouse (also called Rangitoto Beacon) is a lighthouse off the coast in McKenzie Bay, in Auckland's Hauraki Gulf. History The lighthouse was built in 1882. In 1905 a light was added for nighttime visibility. Description Although not classed officially as a lighthouse by the Maritime New Zealand, New Zealand MSA, it does currently flash red every 12 seconds (also known as its character) and can be seen clearly from the southernmost of North Harbour's East Coast Bays. The beacon is red and white in colour, stands at tall, and continues to run through solar power. The height of the focal plane is . See also * List of lighthouses in New Zealand References External links * Lighthouses of New Zealand ''Maritime New Zealand'' Lighthouses completed in 1882 Lighthouses in New Zealand Hauraki Gulf Transport buildings and structures in the Auckland Region {{lighthouse-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Emergency Management Agency (New Zealand)
The National Emergency Management Agency (; Māori: ''Te Rākau Whakamarumaru'') is the public service department of New Zealand responsible for providing leadership and support around national, local and regional emergencies. It is an autonomous departmental agency hosted by the Department of Prime Minister and Cabinet. It replaced the Ministry of Civil Defence and Emergency Management in December 2019. The Minister for Emergency Management is currently Mark Mitchell. History No formal civil defence or emergency management structure existed in New Zealand until the 1930s, when the increasing threat of war prompted the formation of the Emergency Precautions Scheme, which was controlled by the Department of Internal Affairs. In addition to war, earthquake risk was another concern of the Scheme, prompted in part by the 1931 Hawke's Bay earthquake. During World War II, the name of the EPS was changed to Civil Defence. While EPS/Civil Defence did not need to respond to any inv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake Pupuke
Lake Pupuke (traditionally known in Māori as Pupukemoana) is a heart-shaped freshwater lake occupying a volcanic crater (or maar) between the suburbs of Takapuna and Milford on the North Shore of Auckland, New Zealand. The heart shape is a result of its formation by the linking of two circular craters – a larger one forming most of the lake and a smaller one forming the arm in the northeast. Separated from the sea by less than 200 m at one point, it has a circumference of about 4.5 km and reaches 57 m in depth. It is popular for recreational activities and the lakefront property around it. Geology Lake Pupuke is one of the oldest known features of the Auckland volcanic field, erupting an estimated 193,200 years ago. Other similar craters in the Auckland volcanic field were either buried by later eruptions, or breached by erosion as rainwater collected and overflowed the edge of the crater. Lake Pupuke remains a lake because, unlike the other vents, its eru ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
