Onepoto is the name of a volcanic explosion crater (or maar) on the North Shore in Auckland, New Zealand. It is a part of the Auckland volcanic field. It should not be confused with Onepoto Hill, which is a volcanic feature of the South Auckland volcanic field.
Located near the approaches to the Auckland Harbour Bridge, it was created by a series of eruptions approximately 185,000 years ago. [1] Onepoto and neighbouring Tank Farm were fresh water lakes when sea levels were lower using the Last Glacial Maximum. As sea levels rose, the waters of the Waitematā Harbour breached the tuff rings of the craters, becoming tidal lagoons. [2]
Some parts of the tuff ring were quarried away in the 1950s to provide fill for the Northern Motorway. [1] In 1975, the crater was reclaimed to create sports fields. [3] The modern Onepoto Domain features a variety of sports fields, ponds, playgrounds and walks. [1] [4]
The Panmure Basin, also sometimes known as the Panmure Lagoon, is a tidal estuary within a volcanic crater or maar in New Zealand's Auckland volcanic field. It is located to the south of Panmure town centre.
Tank Farm is the name of a volcanic explosion crater on the North Shore of Auckland, New Zealand, near the approaches to the Auckland Harbour Bridge.
Achilles Point is a rocky point on the headland at the eastern end of the small sandy beach named Ladies Bay, Auckland, New Zealand. The name 'Te Pane o Horoiwi' can also sometimes refer to the whole headland between St Heliers and Tamaki River estuary. Achilles Point is named after a ship called HMNZS Achilles (70) which defeated the German pocket battleship Admiral Graf Spee in 1939. The headland, from the point round to the Tamaki heads, was previously known as Te Pane o Horoiwi, named after Horoiwi who arrived in New Zealand on the Tainui canoe (waka).
The Auckland Region of New Zealand is built on a basement of greywacke rocks that form many of the islands in the Hauraki Gulf, the Hunua Ranges, and land south of Port Waikato. The Waitākere Ranges in the west are the remains of a large andesitic volcano, and Great Barrier Island was formed by the northern end of the Coromandel Volcanic Zone. The Auckland isthmus and North Shore are composed of Waitemata sandstone and mudstone, and portions of the Northland Allochthon extend as far south as Albany. Little Barrier Island was formed by a relatively isolated andesitic volcano, active around 1 to 3 million years ago.
Crater Hill is one of the volcanoes of the Auckland volcanic field, in New Zealand. It consists of an explosion crater about 600 metres (2,000 ft) wide, partly filled with water. The hill, alongside Māngere Lagoon, Waitomokia, Kohuora, Pukaki Lagoon and Robertson Hill, is one of the volcanic features collectively referred to as Nga Tapuwae a Mataoho, referring to the deity in Tāmaki Māori myths who was involved in their creation.
Te Hopua a Rangi, also known as Gloucester Park, is one of the volcanoes in the Auckland volcanic field in Auckland, New Zealand, and is located in Onehunga. Its 300 m wide, sediment-filled explosion (maar) crater was used as a boat harbour in early European times and known first as Onehunga Basin then as Geddes Basin. It was reclaimed in the 1930s and named Gloucester Park in 1935 after the visit to New Zealand by the Duke of Gloucester in that year. From 1975 into the early 1980s the Southwestern Motorway was built right through the middle of the park and crater. The southern side was turned into a sports ground, and the western side as a wetland with activity space for Aotea Sea Scouts who took ownership of the Manukau Yacht and Motor Boat Club (MYMBC) club house in 1977.
Maungataketake is one of the volcanoes in the Auckland volcanic field in New Zealand. It had a 76 m high scoria cone, beside a 100 m wide crater, before they were quarried away. It was the site of a pā. Layers of volcanic tuff and ash from Maungataketake overlay the fallen trunks of the nearby Ihumātao fossil forest. The New Zealand Ministry for Culture and Heritage gives a translation of "broad mountain" for Maungataketake.
Pukaki Lagoon, located in the suburb of Māngere, New Zealand, is one of the volcanoes in the Auckland volcanic field. The lagoon, alongside Māngere Lagoon, Waitomokia, Crater Hill, Kohuora and Robertson Hill, is one of the volcanic features collectively referred to as Nga Tapuwae a Mataoho, referring to the deity in Tāmaki Māori myths who was involved in their creation.
Pukeiti is one of the volcanoes in the Auckland volcanic field. The spatter cone is the smallest volcano in Auckland, reaching 30 metres (98 ft) above sea level, and has a shallow crater over 30 metres (98 ft) wide. The crater rim was quarried on the south and east side. Extensive lava poured out from this vent to form a lava flow field to the north and east. It is now part of the Otuataua Stonefields reserve.
Ōrākei Basin is a tidal basin and one of the extinct volcanoes in the Auckland volcanic field in the North Island of New Zealand. It has an explosion crater around 700 m (2,300 ft) wide, with a surrounding tuff ring. The present basin is slightly larger than the original maar crater. Sediments in the basin provided the first high-resolution palaeo-environmental reconstruction for northern New Zealand of the last 130,000 years. The basin supports recreational water sports activities for the local population.
Taylors Hill, is a volcano in the Auckland volcanic field. It erupted about 33,000 years ago. Its scoria cone reaches 56 m high.
Little Rangitoto, officially known as Maungarāhiri / Little Rangitoto, and also as Rangitoto-iti, is a volcano in the Auckland volcanic field in Remuera, New Zealand. The name Maungarāhiri refers to Rāhiri, an ancestor of Ngāpuhi, who journeyed around the North Island. In the 1700s and early 1800s, the volcano was the site of Ngāti Whātua-o-Ōrākei seasonal farms.
Pukewairiki located in Highbrook Park is a volcano in the Auckland volcanic field in the North Island of New Zealand.
Robertson Hill is one of the volcanoes in the Auckland volcanic field in New Zealand. It erupted approximately 24,300 years ago. The hill, alongside Māngere Lagoon, Waitomokia, Crater Hill, Kohuora and Pukaki Lagoon, is one of the volcanic features collectively referred to as Nga Tapuwae a Mataoho, referring to the deity in Tāmaki Māori myths who was involved in their creation.
Hampton Park is one of the volcanoes in the Auckland volcanic field. A small scoria cone reaching 35 metres above sea level, with a shallow crater around 50 metres wide, which has been modified by quarrying. The scoria cone sits in the centre of a much larger explosion crater, the eastern arc of the surrounding tuff ring is still present. Stone from the volcano was used to build dry-stone walls and the nearby St John's Church built on the tuff ring crest.
Styaks Swamp is one of the volcanoes in the Auckland volcanic field, found in the suburb of East Tāmaki.
McLennan Hills is one of the volcanoes in the Auckland volcanic field. It was a group of cratered scoria mounds up to 45 m high, before it was quarried away. A 1940 aerial photo shows a crater around 100 m wide, one around 50 m wide, and 2 or 3 smaller craters. McLennan Hills, alongside neighbouring Ōtāhuhu / Mount Richmond, were the sites of fortified pā in pre-European times, important due to their location between the Waitematā Harbour/Tāmaki River and the Manukau Harbour. Since the European settlement of Auckland, the scoria cone was quarried. The former quarry site was used for greenhouses before being redeveloped for housing.
Boggust Park Crater is a volcano in the Auckland volcanic field, New Zealand. Located in the Favona area of the Māngere suburb, it is one of Auckland city's older volcanoes. It was first recognised as a volcano in 2011. The park in which it is located is named after Ralph Boggust, former superintendent of Manukau Parks Dept.
Grafton Volcano is a buried volcano in New Zealand's Auckland volcanic field that underlies much of the Auckland suburb of Grafton. First recognised in 2010, it includes the Outhwaite Park scoria cone that was first mapped by Hochstetter (1864) and inferred by later geologists to be a late phase vent of adjacent Pukekawa Volcano. Borehole drilling and building excavations in the Grafton-Auckland Domain area during the 1990s and 2000s provided new subsurface geological information that allowed geologists to recognise the buried Grafton Volcano.
The Puhinui Craters are located in Auckland's Puhinui Reserve and are part of the Auckland volcanic field in the North Island of New Zealand. They were first recognised as volcanic craters in 2011. A cluster of three small maar craters like these is unique in the Auckland volcanic field. Their ages are unknown but most probably all three erupted during the same eruptive episode. They could have been associated with the eruption of nearby Matukutureia but this is speculation at present.
36°48′29″S174°45′03″E / 36.80818°S 174.75085°E
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