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Raukūmara Range
The Raukūmara Range runs from the north-eastern end of the Huiarau Range north-eastward to Wharekahika / Hicks Bay, between Cape Runaway and East Cape, at the northern end of the Gisborne District, on the North Island of New Zealand. It is the north-northeastern end segment of the North Island's main mountain chain, which runs from Wellington in the south to the Gisborne District. The western side of the range is in the Ōpōtiki District of the eastern Bay of Plenty and the eastern side in the East Coast region of the Gisborne District. State Highway 2 runs between the Raukūmara Range and the Huiarau Range on its route between the town of Ōpōtiki and the city of Gisborne. The mountain range is composed primarily of Cretaceous greywacke, argillites, siltstones and sandstones. The Raukumara Epoch, an epoch of the New Zealand geologic time scale lasting from 95.2 to 86.5 Mya, is named after the range. The North Island's highest non-volcanic peak, Mount Hikurangi (), is part ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Hikurangi (Gisborne District)
Mount Hikurangi (or ''Te Ara ki Hikurangi'' in Māori) is a peak in the eastern corner of New Zealand's North Island, about north of Gisborne, and southwest of the East Cape Lighthouse. On a spur of the Raukumara Range in the Waiapu Valley, it is the North Island's highest non-volcanic peak. Mount Hikurangi is within the rohe of Ngāti Porou and Ngati Uēpohatu and is the iwi's most significant icon. In Māori mythology, it was the first part of the North Island to emerge when Māui pulled it as a giant fish from the ocean. According to these beliefs, his waka, '' Nukutaimemeha'', became stranded on the mountain, and lies petrified between the mountain's peaks in Lake Hinetakawhiti. Nearby summits include Whanokao (), Aorangi (), Wharekia () and Taitai (). Together, these mountains provide what '' Te Ara: The Encyclopedia of New Zealand'' calls an "awe-inspiring vista". The early arrivals to Aotearoa commonly gave Polynesian ancestral names and symbolism to New Zea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
State Highway 2 (New Zealand)
State Highway 2 (SH 2) runs north–south through eastern parts of the North Island of New Zealand from the outskirts of Auckland to Wellington. It runs through Tauranga, Gisborne, New Zealand, Gisborne, Napier, New Zealand, Napier, Hastings, New Zealand, Hastings and Masterton. It is the second-longest highway in the North Island, after State Highway 1 (New Zealand), State Highway 1, which runs the length of both of the country's main islands. For most of its length it consists of a two-lane single carriageway, with frequent passing lanes. There are sections of four-lane dual-carriageway expressway at Maramarua, Tauranga and Wellington. Route SH 2 leaves just north of Pōkeno, south of central Auckland. It heads east, crossing the Hauraki Plains before running the length of the Karangahake Gorge, a break in the hills between the Coromandel Peninsula and Kaimai Ranges. From the mining town of Waihi it runs southeast, skirting the edge of Tauranga Harbour, which it cros ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mountain Ranges Of New Zealand
A mountain is an elevated portion of the Earth's crust, generally with steep sides that show significant exposed bedrock. Although definitions vary, a mountain may differ from a plateau in having a limited summit area, and is usually higher than a hill, typically rising at least above the surrounding land. A few mountains are isolated summits, but most occur in mountain ranges. Mountains are formed through tectonic forces, erosion, or volcanism, which act on time scales of up to tens of millions of years. Once mountain building ceases, mountains are slowly leveled through the action of weathering, through slumping and other forms of mass wasting, as well as through erosion by rivers and glaciers. High elevations on mountains produce colder climates than at sea level at similar latitude. These colder climates strongly affect the ecosystems of mountains: different elevations have different plants and animals. Because of the less hospitable terrain and climate, mountains ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geology Of The Raukumara Region
The Raukumara region of New Zealand corresponds to the East Cape of the North Island, and associated mountain ranges. To the east of the North Island is the Hikurangi Trough, a collision zone between the Pacific Plate and the Australian Plate. The Pacific Plate is being subducted under the Australian Plate, compressing the east of the North Island, and causing the North Island Fault System, and a series of SSW-NNE trending basins and ranges, including the Raukumara Range. Successively newer rocks have been accreted to the east coast. The Raukumara region used to be adjacent to Northland, before being shifted to its current position, and many rocks of the two regions match. To the north of the Raukumara Range lies the Bay of Plenty, formed of Torlesse (Waioeka) Greywacke. The central ranges are covered by in-place and allochthonous (displaced) Cretaceous to Oligocene rocks. To the south are more recent, mainly Miocene and Pliocene, rocks. Basement rocks All basement rocks ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Raukūmara
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Mount Raukūmara is a 1413-metre (4636 ft) mountain that is the northernmost major peak in the Raukūmara Range in the northeast of New Zealand's North Island. It is part of the backbone of the range, which forms part of a line of mountains extending along the eastern side of the North Island between the Gisborne District and Wellington. Mount Raukūmara is clearly visible from a great distance at sea, being located only 25 kilometres from both Cape Runaway and East Cape. Several rivers have their sources on the slopes of Raukūmara, among them tributaries of the Raukokore and Tapuaeroa Rivers. Rauk A rauk is a column-like landform in Sweden, often equivalent to a stack (geology), stack. Rauks often occur in groups called ''raukfält'' 'rauk fields'. The limestone rauks of Gotland in the Baltic Sea are among the best known examples. Sweden ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Arowhana
Mount Arowhana is a mountain that is part of the backbone of the Raukumara Range in the northeast of New Zealand's North Island. The range forms part of a line of mountains extending along the eastern side of the North Island between the Gisborne District and Wellington. The mountain is at the centre of a major watershed, on the boundary between the Gisborne District and the Ōpōtiki District. Its eastern side is drained by the Mata River, which flows to the Waiapu River, thence into the Pacific Ocean just south of East Cape. Its western side is drained by a tributary of the Mōtū River, which flows into the western Bay of Plenty. Road access to the vicinity is via Whatatutu Whatatutu is a small settlement in the northeast of New Zealand's North Island. It is located north of Te Karaka on the upper reaches of the Waipaoa River, close to its meeting with its tributaries, the Mangatū River and Waingaromia River. Wh ..., a small settlement 30 kilometres to the south in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maungahaumi
Maungahaumi is a mountain in the Raukumara Range in the northeast of New Zealand's North Island. Part of the backbone of the range, which forms part of a line of mountains extending across much of the North Island, Maungahaumi is the southernmost of the Raukumara Range's most prominent peaks. To the southwest of the peak is a saddle separating the Raukumara Range from the Huiarau Range – this saddle, with its highest point at the Traffords Hill, is crossed by State Highway 2, the main road link between Gisborne and Ōpōtiki in the Bay of Plenty. Several tributaries of the Waipaoa River have their sources on the slopes of Maungahaumi. Cultural significance Maungahaumi is the principal ancestral mountain of the Maori tribe Ngaariki Kaiputahi, as well as other affiliated tribal groups and hapū in the Tūranga region. Name The origins of the name date back to the story of the Horouta waka and its journey from Hawaiki (also rendered as in the Cook Islands, H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mya (unit)
Mya or MYA may refer to: Brands and product names * Mya (TV channel), an Italian Television channel * Mya (program), an intelligent personal assistant created by Motorola * Midwest Young Artists, a comprehensive youth music program Codes * Burmese language (ISO 639-3: ) * Moruya Airport (IATA code: MYA), New South Wales, Australia * The IOC, license plate, and UNDP country code for Myanmar Myanmar, officially the Republic of the Union of Myanmar; and also referred to as Burma (the official English name until 1989), is a country in northwest Southeast Asia. It is the largest country by area in Mainland Southeast Asia and has ... People * Mya (given name) * Mya (singer) (Mya Marie Harrison, born 1979), American R&B singer-songwriter and actress * Bo Mya (1927–2006), Myanmar rebel leader and chief commander of the Karen National Union Other uses * ''Mýa'' (album), a 1998 album by Mýa * ''Mya'' (bivalve), a genus of soft-shell clams * Million years a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Epoch (geology)
The geologic time scale or geological time scale (GTS) is a representation of time based on the rock record of Earth. It is a system of chronological dating that uses chronostratigraphy (the process of relating strata to time) and geochronology (a scientific branch of geology that aims to determine the age of rocks). It is used primarily by Earth scientists (including geologists, paleontologists, geophysicists, geochemists, and paleoclimatologists) to describe the timing and relationships of events in geologic history. The time scale has been developed through the study of rock layers and the observation of their relationships and identifying features such as lithologies, paleomagnetic properties, and fossils. The definition of standardised international units of geological time is the responsibility of the International Commission on Stratigraphy (ICS), a constituent body of the International Union of Geological Sciences (IUGS), whose primary objective is to precis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sandstone
Sandstone is a Clastic rock#Sedimentary clastic rocks, clastic sedimentary rock composed mainly of grain size, sand-sized (0.0625 to 2 mm) silicate mineral, silicate grains, Cementation (geology), cemented together by another mineral. Sandstones comprise about 20–25% of all sedimentary rocks. Most sandstone is composed of quartz or feldspar, because they are the most resistant minerals to the weathering processes at the Earth's surface. Like uncemented sand, sandstone may be imparted any color by impurities within the minerals, but the most common colors are tan, brown, yellow, red, grey, pink, white, and black. Because sandstone beds can form highly visible cliffs and other topography, topographic features, certain colors of sandstone have become strongly identified with certain regions, such as the red rock deserts of Arches National Park and other areas of the Southwestern United States, American Southwest. Rock formations composed of sandstone usually allow the p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siltstone
Siltstone, also known as aleurolite, is a clastic sedimentary rock that is composed mostly of silt. It is a form of mudrock with a low clay mineral content, which can be distinguished from shale by its lack of fissility. Although its permeability and porosity is relatively low, siltstone is sometimes a tight gas reservoir rock, an unconventional reservoir for natural gas that requires hydraulic fracturing for economic gas production. Siltstone was prized in ancient Egypt for manufacturing statuary and cosmetic palettes. The siltstone quarried at Wadi Hammamat was a hard, fine-grained siltstone that resisted flaking and was almost ideal for such uses. Description There is not complete agreement on the definition of siltstone. One definition is that siltstone is mudrock (clastic sedimentary rock containing at least 50% clay and silt) in which at least 2/3 of the clay and silt fraction is composed of silt-sized particles. Silt is defined as grains 2–62 μm in diam ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Argillite
Argillite () is a fine-grained sedimentary rock composed predominantly of Friability, indurated clay particles. Argillaceous rocks are basically lithified muds and Pelagic sediment, oozes. They contain variable amounts of silt-sized particles. The argillites grade into shale when the Fissility (geology), fissile layering typical of shale is developed. Another name for poorly lithified argillites is ''mudstone''. These rocks, although variable in composition, are typically high in aluminium and silica with variable alkali and alkaline earth cations. The term pelite, ''pelitic'' or ''pelite'' is often applied to these sediments and rocks. Metamorphism of argillites produces slate, phyllite, and pelitic schist. Belt Supergroup The Belt Supergroup, an assemblage of rocks of late Precambrian (Mesoproterozoic) age, includes thick sequences of argillite, as well as other metamorphosed or semi-metamorphosed mudstones.Schieber, J. 1990. Significance of styles of epicontinental shale sedi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
