In geology and physical geography, a plateau called a high plain or a tableland, is an area of a highland consisting of flat terrain, raised above the surrounding area with one or more sides with steep slopes. Plateaus can be formed by a number of processes, including upwelling of volcanic magma, extrusion of lava, erosion by water and glaciers. Plateaus are classified according to their surrounding environment as intermontane, piedmont, or continental. Plateaus can be formed by a number of processes, including upwelling of volcanic magma, extrusion of lava, erosion by water and glaciers. Volcanic plateaus are produced by volcanic activity; the Columbia Plateau in the northwestern United States is an example. They may be formed by upwelling of volcanic extrusion of lava; the underlining mechanism in forming plateaus from upwelling starts when magma rises from the mantle, causing the ground to swell upward. In this way, flat areas of rock are uplifted to form a plateau. For plateaus formed by extrusion, the rock is built up from lava spreading outward from cracks and weak areas in the crust.
Plateaus can be formed by the erosional processes of glaciers on mountain ranges, leaving them sitting between the mountain ranges. Water can erode mountains and other landforms down into plateaus. Dissected plateaus are eroded plateaus cut by rivers and broken by deep narrow valleys. Computer modeling studies suggest that high plateaus may be a result from the feedback between tectonic deformation and dry climatic conditions created at the lee side of growing orogens. Plateaus are classified according to their surrounding environment. Intermontane plateaus are the highest in the world, bordered by mountains; the Tibetan Plateau is one such plateau. Lava or volcanic plateaus are the plateau; the magma that comes out through narrow cracks or fissures in the crust spread over large area and solidifies. These layers of lava sheets form volcanic plateaus; the Antrim plateau in Northern Ireland, The Deccan Plateau in India and the Columbia Plateau in the United States are examples of lava plateaus. Piedmont plateaus are bordered on one side by mountains and on the other by a sea.
The Piedmont Plateau of the Eastern United States between the Appalachian Mountains and the Atlantic Coastal Plain is an example. Continental plateaus are bordered on all sides by oceans, forming away from the mountains. An example of a continental plateau is the Antarctic Polar Plateau in East Antarctica; the largest and highest plateau in the world is the Tibetan Plateau, sometimes metaphorically described as the "Roof of the World", still being formed by the collisions of the Indo-Australian and Eurasian tectonic plates. The Tibetan plateau covers 2,500,000 km2, at about 5,000 m above sea level; the plateau is sufficiently high to reverse the Hadley cell convection cycles and to drive the monsoons of India towards the south. The second-highest plateau is the Deosai Plateau of the Deosai National Park at an average elevation of 4,114 m, it is located in northern Pakistan. Deosai means'the land of giants'; the park protects an area of 3,000 km2. It is known for its rich flora and fauna of the Karakoram-West Tibetan Plateau alpine steppe ecoregion.
In spring it is covered by a wide variety of butterflies. The highest point in Deosai is Deosai Lake, or Sheosar Lake from the Shina language meaning "Blind lake" near the Chilim Valley; the lake lies at an elevation of 4,142 m, one of the highest lakes in the world, is 2.3 km long, 1.8 km wide, 40 m deep on average. Some other major plateaus in Asia are: Najd in the Arabian Peninsula elevation 762 to 1,525 m, Armenian Highlands, Iranian plateau, Anatolian Plateau, Mongolian Plateau, the Deccan Plateau. Another large plateau is the icy Antarctic Plateau, sometimes referred to as the Polar Plateau, home to the geographic South Pole and the Amundsen-Scott South Pole Station, which covers most of East Antarctica where there are no known mountains but rather 3,000 m high of superficial ice and which spreads slowly toward the surrounding coastline through enormous glaciers; this polar ice cap is so massive that the echolocation sound measurements of ice thickness have shown that large parts of the Antarctic "dry land" surface have been pressed below sea level.
Thus, if that same ice cap were removed, the large areas of the frozen white continent would be flooded by the surrounding Antarctic Ocean or Southern Ocean. On the other hand, were the ice cap melts away too the surface of the land beneath it would rebound away through isostasy from the center of the Earth and that same land would rise above sea level. A large plateau in North America is the Colorado Plateau, which covers about 337,000 km2 in Colorado, Utah and New Mexico. In northern Arizona and southern Utah the Colorado Plateau is bisected by the Colorado River and the Grand Canyon. How this came to be is that over 10 million years ago, a river was there, though not on the same cours
The Chilcotin Plateau is part of the Fraser Plateau, a major subdivision of the Interior Plateau of British Columbia. The Chilcotin Plateau is physically near-identical with the region of the same name, i.e. "the Chilcotin", which lies between the Fraser River and the southern Coast Mountains and is defined by the basin of the Chilcotin River and so includes montane areas beyond the plateau. East of the Chilcotin Plateau, across the Fraser River, is the Cariboo Plateau, while to the north beyond the West Road River is the Nechako Plateau. West and south of the Chilcotin Plateau are various subdivisions of the Coast Mountains, including the Chilcotin Ranges which lie along the plateau's southwest. Included within the definition of the Chilcotin Plateau are the Rainbow Range, near Bella Coola and the volcanic Ilgachuz Range and Itcha Range both of which are major shield volcanoes; the Camelsfoot Range, north of Lillooet, is included in the Chilcotin Plateau by some systems of classification. The plateau is nearly drained by the Chilcotin River and its tributaries, the largest of which are the Chilanko and Chilko Rivers.
Draining the plateau on its eastern edge is Churn Creek, which forms the east flank of the Camelsfoot Range and enters the Fraser directly. On the west side of the plateau, the basins of the Dean and Atnarko Rivers penetrate the massifs of the Coast Mountains and have their beginnings, or the early part of their courses, on the Chilcotin Plateau; the Chilcotin Plateau consists of basaltic lava of the Chilcotin Group, a group of related volcanic rocks, nearly parallel with the Fraser Plateau. It extends along the adjacent Garibaldi Volcanic Belt in the Coast Mountains. Volcanism of the Chilcotin Plateau is considered to be a result of extension of the crust behind the coastal Cascadia subduction zone. Tsilhqot'in Nation British Columbia Highway 20 Cascadia Subduction Zone Nechako Plateau Fraser River Chilcotin River Chilanko River Taseko River
The Shuswap Highland is a plateau-like hilly area of 14,511 km2 in British Columbia, Canada. It spans the upland area between the Bonaparte and Thompson Plateaus from the area of Mahood Lake, at the southeast corner of the Cariboo Plateau, southeast towards the lower Shuswap River east of Vernon in the Okanagan; the highland is not a unified range, but a combination of small uplands broken up by the valleys of the Clearwater, North Thompson and Adams Rivers and by the lowlands in the southwest flanking Shuswap Lake. In that area of the valley are the towns of Falkland and Monte Creek along Highway 97; this area includes the Spa Hills, the other isolated pockets of hills and mini-plateaus between the Thompson Plateau proper and Shuswap Lake. The highest point of the Highland is Matterhorn Peak in the Dunn Peak massif at 2636 meters; the Shuswap Highland is in essence a foothill area between the much broader interior plateaus southwest and west of it, the mountainous terrain of the northern Monashee and Cariboo Mountains on the east/north-east.
Climates here range from sub-alpine in the mountains further north, to a semi-arid, more temperate, continental climate, found around Shuswap Lake. Okanagan Highland Quesnel Highland Geography of British Columbia Geology of British Columbia Geology of the Pacific Northwest S. Holland, Landforms of British Columbia, Province of British Columbia, 1976 "Shuswap Highland". BC Geographical Names
Highlands or uplands are any mountainous region or elevated mountainous plateau. Speaking, upland refers to ranges of hills up to 500–600 m. Highland is reserved for ranges of low mountains; the best known highlands in the anglosphere are the Scottish Highlands in northern Scotland, the mountainous region north and west of the Highland Boundary Fault. The Highland council area is a local government area in the Scottish Highlands and Britain's largest local government area. Many countries have areas that are or unofficially referred to as highlands. Other than Scotland, these include parts of Tibet, Canada, Eritrea, Ghana, Papua New Guinea and Cantabria. Synonymous terms used in other countries include high country, used in New Zealand, New South Wales, Victoria and Southern Queensland in Australia, parts of the United States, used in South Africa and Roof of the World, used for Tibet; the highlands in Australia are above the elevation of 500 metres. These areas receive snowfalls through winter.
Most of the highlands lead up to large alpine or sub-alpine mountainous regions such as the Australian Alps, Snowy Mountains, Great Dividing Range, Northern Tablelands and Blue Mountains. The most mountainous region of Tasmania is the Central Highlands area, which covers most of the central western parts of the state. Many of these areas are elevated alpine regions. A spine of mountains runs the length of the island of New Guinea, forming a populous highlands region; the Central Highlands of Sri Lanka these are rain forests, where the elevation reaches 2,500 metres above sea level. The Sri Lanka montane rain forests represent the montane and submontane moist forests above 1,000 metres in the central highlands and in the Knuckles mountain range. Half of Sri Lanka's endemic flowering plants and 51 percent of the endemic vertebrates are restricted to this ecoregion; the highlands of Iceland cover about 40% of the country and are inhospitable to humans. They are considered to be any land above 500 meters.
Additionally, the mountainous natural region of the Thai highlands is found in Northern Thailand. The Cameron Highlands are a highland hill station in Northern Malaysia. Shillong in India in the state of Meghalaya is a hill station, surrounded by highlands. Officers of the British Raj referred to Shillong as "The Scotland of the East". Highland continents – or terrae – are areas of topographically unstable terrain, with high peaks and valleys, they resemble highlands on Earth. They can be found on Venus, Mercury and the Moon. Planum Highlander
Vancouver Island is in the northeastern Pacific Ocean. It is part of the Canadian province of British Columbia; the island is 460 kilometres in length, 100 kilometres in width at its widest point, 32,134 km2 in area. It is the largest island on the West Coast of the Americas; the southern part of Vancouver Island and some of the nearby Gulf Islands are the only parts of British Columbia or Western Canada to lie south of the 49th Parallel. This area has one of the warmest climates in Canada, since the mid-1990s has been mild enough in a few areas to grow subtropical Mediterranean crops such as olives and lemons. Vancouver Island had a population in 2016 of 775,347. Nearly half of that population live in the metropolitan area of Greater Victoria. Other notable cities and towns on Vancouver Island include Nanaimo, Port Alberni, Parksville and Campbell River. Victoria, the capital city of British Columbia, is located on the island, but the larger city of Vancouver is not – it is on the North American mainland, across the Strait of Georgia from Nanaimo.
Vancouver Island has been the homeland to many indigenous peoples for thousands of years. The island was explored by Spanish expeditions in the late 18th century, it was named Quadra's and Vancouver's Island in commemoration of the friendly negotiations held in 1792 by Spanish commander of the Nootka Sound settlement, Juan Francisco de la Bodega y Quadra, by British naval captain George Vancouver, during the Nootka Crisis. Bodega y Quadra's name was dropped from the name, it is one of several North American locations named after George Vancouver, who explored the Pacific Northwest coast between 1791 and 1794. Vancouver Island is the world's 43rd largest island, Canada's 11th largest island, Canada's second most populous island after the Island of Montreal, it is the largest Pacific island anywhere east of New Zealand. Vancouver Island has been the homeland to many indigenous peoples for thousands of years; the groupings, by language, are the Kwakwaka'wakw, Nuu-chah-nulth, various Coast Salish peoples.
Kwakwaka'wakw territory includes northern and northwestern Vancouver Island and adjoining areas of the mainland, the Nuu-chah-nulth span most of the west coast, while the Coast Salish cover the southeastern Island and southernmost extremities along the Strait of Juan de Fuca. Their cultures are connected to the natural resources abundant in the area; the Kwakwaka'wakw today number about 5,500, who live in British Columbia on northern Vancouver Island and the mainland. They are known as Kwakiutl in English, from one of their tribes, but they prefer their autonym Kwakwaka'wakw, their indigenous language, part of the Wakashan family, is Kwak'wala. The name Kwakwaka'wakw means "speakers of Kwak'wala"; the language is now spoken by less than 5% of the population—about 250 people. Today 17 separate tribes make up the Kwakwaka'wakw; some Kwakwaka'wakw groups are now extinct. Kwak'wala is a Northern Wakashan language, a grouping shared with Haisla and Wuikyala. Kwakwaka'wakw centres of population on Vancouver Island include communities such as Fort Rupert, Alert Bay and Quatsino, The Kwakwaka'wakw tradition of the potlatch was banned by the federal government of Canada in 1885, but has been revived in recent decades.
The Nuu-chah-nulth are indigenous peoples in Canada. Their traditional home is on the west coast of Vancouver Island. In pre-contact and early post-contact times, the number of nations was much greater, but as in the rest of the region and other consequences of contact resulted in the disappearance of some groups, the absorption of others into neighbouring groups, they were among the first Pacific peoples north of California to come into contact with Europeans, as the Spanish and British attempted to secure control of Pacific Northwest and the trade in otter pelts, with Nootka Sound becoming a focus of these rivalries. The Nuu-chah-nulth speak a Southern Wakashan language and are related to the Makah of the Olympic Peninsula, Washington State and Ditidaht; the Coast Salish are the largest of the southern groups. They are a loose grouping of many tribes with languages. On Vancouver Island, Coast Salish peoples territory traditionally spans from the northern limit of the Gulf of Georgia on the inside of Vancouver Island and covering most of southern Vancouver Island.
Distinct nations within the Coast Salish peoples on Vancouver Island include the Chemainus, the Comox of the Comox Valley area, the Cowichan of the Cowichan Valley, the Esquimalt, the Saanich of the Saanich Peninsula, the Songhees of the Victoria area and Snuneymuxw in the Nanaimo area. Europeans began to explore the island in 1774, when rumours of Russian fur traders caused Spain to send a number of expeditions to assert its long-held claims to the Pacific Northwest; the first expedition was that of the Santiago, under the command of Juan José Pérez Hernández. In 1775, a second Spanish expedition under the Spanish Peruvian captain Juan Francisco de la Bodega y Quadra was sent. By 1776 Spanish exploration had reached Bucareli Bay including the mouth of the Columbia River between Oregon and Washington, Sitka Sound. Vancouver Island came to the attention of Britain after the third voyage of Captain James Cook, who spent a month during 1778 at Nootka Sound, on the island's western coast. Cook claimed it for Great Britain.
The island's rich fur-trading potential led the fur trader John Meares to set up a single-building trading post near the native village of Yuquot, at the entrance to Nootka Sound. The building was removed by the end of 1788; the island was further explored by Spain in 1789 with Esteban José Martínez, who est
Provinces and territories of Canada
The provinces and territories of Canada are the sub-national governments within the geographical areas of Canada under the authority of the Canadian Constitution. In the 1867 Canadian Confederation, three provinces of British North America—New Brunswick, Nova Scotia, the Province of Canada —were united to form a federated colony, becoming a sovereign nation in the next century. Over its history, Canada's international borders have changed several times, the country has grown from the original four provinces to the current ten provinces and three territories. Together, the provinces and territories make up the world's second-largest country by area. Several of the provinces were former British colonies, Quebec was a French colony, while others were added as Canada grew; the three territories govern the rest of the area of the former British North America. The major difference between a Canadian province and a territory is that provinces receive their power and authority from the Constitution Act, 1867, whereas territorial governments have powers delegated to them by the Parliament of Canada.
The powers flowing from the Constitution Act are divided between the Government of Canada and the provincial governments to exercise exclusively. A change to the division of powers between the federal government and the provinces requires a constitutional amendment, whereas a similar change affecting the territories can be performed unilaterally by the Parliament of Canada or government. In modern Canadian constitutional theory, the provinces are considered to be sovereign within certain areas based on the divisions of responsibility between the provincial and federal government within the Constitution Act 1867, each province thus has its own representative of the Canadian "Crown", the lieutenant governor; the territories are not sovereign, but instead their authorities and responsibilities come directly from the federal level, as a result, have a commissioner instead of a lieutenant governor. Notes: There are three territories in Canada. Unlike the provinces, the territories of Canada have no inherent sovereignty and have only those powers delegated to them by the federal government.
They include all of mainland Canada north of latitude 60° north and west of Hudson Bay, as well as most islands north of the Canadian mainland. The following table lists the territories in order of precedence. Ontario, New Brunswick, Nova Scotia were the original provinces, formed when several British North American colonies federated on July 1, 1867, into the Dominion of Canada and by stages began accruing the indicia of sovereignty from the United Kingdom. Prior to this and Quebec were united as the Province of Canada. Over the following years, British Columbia, Prince Edward Island were added as provinces; the British Crown had claimed two large areas north-west of the Canadian colony, known as Rupert's Land and the North-Western Territory and assigned them to the Hudson's Bay Company. In 1870, the company relinquished its claims for £300,000, assigning the vast territory to the Government of Canada. Subsequently, the area was re-organized into the province of the Northwest Territories; the Northwest Territories were vast at first, encompassing all of current northern and western Canada, except for the British holdings in the Arctic islands and the Colony of British Columbia.
The British claims to the Arctic islands were transferred to Canada in 1880, adding to the size of the Northwest Territories. The year of 1898 saw the Yukon Territory renamed as Yukon, carved from the parts of the Northwest Territories surrounding the Klondike gold fields. On September 1, 1905, a portion of the Northwest Territories south of the 60th parallel north became the provinces of Alberta and Saskatchewan. In 1912, the boundaries of Quebec and Manitoba were expanded northward: Manitoba's to the 60° parallel, Ontario's to Hudson Bay and Quebec's to encompass the District of Ungava. In 1869, the people of Newfoundland voted to remain a British colony over fears that taxes would increase with Confederation, that the economic policy of the Canadian government would favour mainland industries. In 1907, Newfoundland acquired dominion status. In the middle of the Great Depression in Canada with Newfoundland facing a prolonged period of economic crisis, the legislature turned over political control to the Newfoundland Commission of Government in 1933.
Following Canada's participation in World War II, in a 1948 referendum, a narrow majority of Newfoundland citizens voted to join the Confederation, on March 31, 1949, Newfoundland became Canada's tenth province. In 2001, it was renamed Newfoundland and Labrador. In 1903, the Alaska Panhandle Dispute fixed British Columbia's northwestern boundary; this was one of only two provinces in Canadian history to have its size reduced. The second reduction, in 1927, occurred when a boundary dispute between Canada and the Dominion of Newfoundland saw Labrador increased at Quebec's expense – this land returned to Canada, as part of the province of Newfoundland, in 1949. In 1999, Nunavut was created from the eastern portion of the Northwest Territories. Yukon lies in the western portion of Northern Canada. All t