The Canadian Rockies () or Canadian Rocky Mountains, comprising both the Alberta Rockies and the

British Columbia British Columbia is the westernmost Provinces and territories of Canada, province of Canada. Situated in the Pacific Northwest between the Pacific Ocean and the Rocky Mountains, the province has a diverse geography, with rugged landscapes that ...

n Rockies, is the

Canadian Canadians () are people identified with the country of Canada. This connection may be residential, legal, historical or cultural. For most Canadians, many (or all) of these connections exist and are collectively the source of their being ''C ...

segment of the

North America North America is a continent in the Northern Hemisphere, Northern and Western Hemisphere, Western hemispheres. North America is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South Ameri ...

Rocky Mountains The Rocky Mountains, also known as the Rockies, are a major mountain range and the largest mountain system in North America. The Rocky Mountains stretch in great-circle distance, straight-line distance from the northernmost part of Western Can ...

. It is the easternmost part of the Canadian Cordillera, which is the northern segment of the North American Cordillera, the expansive system of interconnected mountain ranges between the Interior Plains and the Pacific Coast that runs northwest–southeast from central

Alaska Alaska ( ) is a non-contiguous U.S. state on the northwest extremity of North America. Part of the Western United States region, it is one of the two non-contiguous U.S. states, alongside Hawaii. Alaska is also considered to be the north ...

to the Isthmus of Tehuantepec in

Mexico Mexico, officially the United Mexican States, is a country in North America. It is the northernmost country in Latin America, and borders the United States to the north, and Guatemala and Belize to the southeast; while having maritime boundar ...

. Canada officially defines the Rocky Mountains system as the

mountain chain A mountain chain is a row of high mountain summits, a linear sequence of interconnected or related mountains,Whittow, John (1984). ''Dictionary of Physical Geography''. London: Penguin, p 87. . or a contiguous ridge of mountains within a larger mo ...

s east of the Rocky Mountain Trench extending from the

Liard River The Liard River of the Boreal forest of Canada, North American boreal forest flows through Yukon, British Columbia and the Northwest Territories, Canada. Rising in the Saint Cyr Range of the Pelly Mountains in southeastern Yukon, it flows sout ...

valley in northern British Columbia to the Albuquerque Basin in

New Mexico New Mexico is a state in the Southwestern United States, Southwestern region of the United States. It is one of the Mountain States of the southern Rocky Mountains, sharing the Four Corners region with Utah, Colorado, and Arizona. It also ...

, not including the Mackenzie, Richardson and British Mountains/ Brooks Range in

Yukon Yukon () is a Provinces and territories of Canada, territory of Canada, bordering British Columbia to the south, the Northwest Territories to the east, the Beaufort Sea to the north, and the U.S. state of Alaska to the west. It is Canada’s we ...

and Alaska (which are all included as the "Arctic Rockies" in the

United States The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...

' definition of the Rocky Mountains system). The Canadian Rockies, being the northern segment of this chain, is thus defined as comprising the central-eastern section of the North American Cordillera, between the Prairies of

Alberta Alberta is a Provinces and territories of Canada, province in Canada. It is a part of Western Canada and is one of the three Canadian Prairies, prairie provinces. Alberta is bordered by British Columbia to its west, Saskatchewan to its east, t ...

and the Liard Plain of northeastern British Columbia to the east and the Interior Mountains/

Plateau In geology and physical geography, a plateau (; ; : plateaus or plateaux), also called a high plain or a tableland, is an area of a highland consisting of flat terrain that is raised sharply above the surrounding area on at least one side. ...

and

Columbia Mountains The Columbia Mountains are a group of mountain ranges along the Upper Columbia River in British Columbia, Montana, Idaho and Washington (state), Washington. The mountain range covers 135,952 km² (52,491 sq mi). The range is bounded by th ...

to the west. It is divided into the Northern Rockies (which is further subdivided into the Muskwa and Hart Ranges) and Continental Ranges, separated by the McGregor River valley, the McGregor Pass and the Kakwa River valley. The southern end of the Canadian Rockies extends into the U.S. state of

Montana Montana ( ) is a landlocked U.S. state, state in the Mountain states, Mountain West subregion of the Western United States. It is bordered by Idaho to the west, North Dakota to the east, South Dakota to the southeast, Wyoming to the south, an ...

at various sites such as the Wilson Range, Upper Waterton Lake, Boundary Creek, Cameron Lake, Forum Peak, Long Knife Peak, North Fork Flathead River and Frozen Lake. In geographic terms, the boundary is at the

Canada–United States border The international border between Canada and the United States is the longest in the world by total length. The boundary (including boundaries in the Great Lakes, Atlantic, and Pacific coasts) is long. The land border has two sections: Canada' ...

49th parallel north The 49th parallel north is a circle of latitude that is 49degree (angle), ° true north, north of Earth's equator. It crosses Europe, Asia, the Pacific Ocean, North America, and the Atlantic Ocean. The city of Paris is about south of the 49t ...

, but in geological terms it might be considered to be at Marias Pass in northern Montana. The Canadian Rockies have numerous high peaks and ranges, such as Mount Robson () and Mount Columbia (). The Canadian Rockies are composed of

shale Shale is a fine-grained, clastic sedimentary rock formed from mud that is a mix of flakes of Clay mineral, clay minerals (hydrous aluminium phyllosilicates, e.g., Kaolinite, kaolin, aluminium, Al2Silicon, Si2Oxygen, O5(hydroxide, OH)4) and tiny f ...

and

limestone Limestone is a type of carbonate rock, carbonate sedimentary rock which is the main source of the material Lime (material), lime. It is composed mostly of the minerals calcite and aragonite, which are different Polymorphism (materials science) ...

. Much of the range is protected by national and provincial parks, several of which collectively comprise a

World Heritage Site World Heritage Sites are landmarks and areas with legal protection under an treaty, international treaty administered by UNESCO for having cultural, historical, or scientific significance. The sites are judged to contain "cultural and natural ...

Geography

The Canadian Rockies are the easternmost part of the Canadian Cordillera, the collective name for the mountains of

Western Canada Western Canada, also referred to as the Western provinces, Canadian West, or Western provinces of Canada, and commonly known within Canada as the West, is a list of regions of Canada, Canadian region that includes the four western provinces and t ...

. They form part of the

American Cordillera The American Cordillera ( ) is a chain of mountain ranges (cordilleras), consisting of an almost continuous sequence of mountain ranges that form the western "backbone" of the Americas. Aconcagua is the highest peak of the chain. It is also the ...

, an essentially continuous sequence of mountain ranges that runs all the way from

to the very tip of South America. The Cordillera, in turn, is the eastern part of the Pacific Ring of Fire that runs all the way around the

Pacific Ocean The Pacific Ocean is the largest and deepest of Earth's five Borders of the oceans, oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean, or, depending on the definition, to Antarctica in the south, and is ...

The Canadian Rockies are bounded on the east by the Canadian Prairies, on the west by the Rocky Mountain Trench, and on the north by the Liard River. Contrary to popular misconception, the Rockies do not extend north into

or Alaska, or west into central British Columbia. North of the Liard River, the Mackenzie Mountains, which are a distinct mountain range, form a portion of the border between the Yukon and the

Northwest Territories The Northwest Territories is a federal Provinces and territories of Canada, territory of Canada. At a land area of approximately and a 2021 census population of 41,070, it is the second-largest and the most populous of Provinces and territorie ...

. The mountain ranges to the west of the Rocky Mountain Trench in southern British Columbia are called the

, and are not considered to be part of the Rockies by Canadian geologists.

Highest peaks

Mount Robson () is the highest peak in the Canadian Rockies, but not the highest in British Columbia, since there are some higher mountains in the

Coast Mountains The Coast Mountains () are a major mountain range in the Pacific Coast Ranges of western North America, extending from southwestern Yukon through the Alaska Panhandle and virtually all of the British Columbia Coast, Coast of British Columbia sout ...

and Saint Elias Mountains. Mount Robson lies on the continental divide near Yellowhead Pass, one of the lowest passes in the Canadian Rockies, and is close to the Yellowhead Highway. Its base is above sea level, with a total vertical relief of . Mount Columbia () is the second-highest peak in the Canadian Rockies, and is the highest mountain in Alberta. Snow Dome () is one of two hydrological apexes of North America. Water flows off Snow Dome into three different watersheds, into the Pacific Ocean,

Arctic Ocean The Arctic Ocean is the smallest and shallowest of the world's five oceanic divisions. It spans an area of approximately and is the coldest of the world's oceans. The International Hydrographic Organization (IHO) recognizes it as an ocean, ...

, and

Atlantic Ocean The Atlantic Ocean is the second largest of the world's five borders of the oceans, oceanic divisions, with an area of about . It covers approximately 17% of Earth#Surface, Earth's surface and about 24% of its water surface area. During the ...

via

Hudson Bay Hudson Bay, sometimes called Hudson's Bay (usually historically), is a large body of Saline water, saltwater in northeastern Canada with a surface area of . It is located north of Ontario, west of Quebec, northeast of Manitoba, and southeast o ...

. The Canadian Rockies are not the highest mountain ranges in Canada. Both the Saint Elias Mountains (highest point in Canada Mount Logan at ) and the Coast Mountains (highest point Mount Waddington at ) have higher summits.

Mountain ranges

The Canadian Rockies are subdivided into numerous

mountain range A mountain range or hill range is a series of mountains or hills arranged in a line and connected by high ground. A mountain system or mountain belt is a group of mountain ranges with similarity in form, structure, and alignment that have aris ...

s, structured in two main groupings, the Continental Ranges, which has three main subdivisions, the

Front Range The Front Range is a mountain range of the Southern Rocky Mountains of North America located in the central portion of the U.S. State of Colorado, and southeastern portion of the U.S. State of Wyoming. It is the first mountain range encounter ...

, Park Ranges and Kootenay Ranges, and the Northern Rockies which comprise two main groupings, the Hart Ranges and the Muskwa Ranges. The division-point of the two main groupings is at Monkman Pass northwest of Mount Robson and to the southwest of Mount Ovington.

Rivers

The Canadian Rockies are noted for being the source of several major river systems, and also for the many rivers within the range itself. The Rockies form the divide between the Pacific Ocean drainage on the west and that of Hudson Bay and the Arctic Ocean on the east. Of the range's rivers, only the Peace River penetrates the range. Notable rivers originating in the Canadian Rockies include the

Fraser Fraser may refer to: Places Antarctica * Fraser Point, South Orkney Islands Australia * Fraser, Australian Capital Territory, a suburb in the Canberra district of Belconnen * Division of Fraser (Australian Capital Territory), a former federal ...

, Columbia,

North Saskatchewan The North Saskatchewan River is a glacier-fed river that flows from the Canadian Rockies continental divide east to central Saskatchewan, where it joins with the South Saskatchewan River to make up the Saskatchewan River. Its water flows ev ...

, Bow and

Athabasca River The Athabasca River (French: ''Rivière Athabasca'') in Alberta, Canada, originates at the Columbia Icefield in Jasper National Park and flows more than before emptying into Lake Athabasca. Much of the land along its banks is protected in nationa ...

Geology

The Canadian Rockies are quite different in appearance and geology from the American Rockies to the south of them. The Canadian Rockies are composed of layered

sedimentary rock Sedimentary rocks are types of rock (geology), rock formed by the cementation (geology), cementation of sediments—i.e. particles made of minerals (geological detritus) or organic matter (biological detritus)—that have been accumulated or de ...

such as

and

, whereas the American Rockies are made mostly of

metamorphic Metamorphic rocks arise from the transformation of existing rock to new types of rock in a process called metamorphism. The original rock (protolith) is subjected to temperatures greater than and, often, elevated pressure of or more, causi ...

and

igneous rock Igneous rock ( ), or magmatic rock, is one of the three main rock types, the others being sedimentary and metamorphic. Igneous rocks are formed through the cooling and solidification of magma or lava. The magma can be derived from partial ...

such as gneiss and

granite Granite ( ) is a coarse-grained (phanerite, phaneritic) intrusive rock, intrusive igneous rock composed mostly of quartz, alkali feldspar, and plagioclase. It forms from magma with a high content of silica and alkali metal oxides that slowly coo ...

. The Canadian Rockies are overall more jagged than the American Rockies, because the Canadian Rockies have been more heavily glaciated, resulting in sharply pointed mountains separated by wide, U-shaped valleys gouged by glaciers, whereas the American Rockies are overall more rounded, with river-carved V-shaped valleys between them. The Canadian Rockies are cooler and wetter, giving them moister soil, bigger rivers, and more glaciers. The

tree line The tree line is the edge of a habitat at which trees are capable of growing and beyond which they are not. It is found at high elevations and high latitudes. Beyond the tree line, trees cannot tolerate the environmental conditions (usually low ...

is much lower in the Canadian Rockies than in the American Rockies.

Parks

Five national parks are located within the Canadian Rockies, four of which are adjacent and make up the Canadian Rocky Mountain Parks. These four parks are Banff,

Jasper Jasper, an aggregate of microgranular quartz and/or cryptocrystalline chalcedony and other mineral phases, is an opaque, impure variety of silica, usually red, yellow, brown or green in color; and rarely blue. The common red color is due to ...

, Kootenay and Yoho. The fifth national park, Waterton Lakes, is not adjacent to the others. Waterton Lakes lies farther south, straddling the Canada–US border as the Canadian part of the Waterton-Glacier International Peace Park. The four adjacent parks, combined with three British Columbia provincial parks, were declared a single

UNESCO The United Nations Educational, Scientific and Cultural Organization (UNESCO ) is a List of specialized agencies of the United Nations, specialized agency of the United Nations (UN) with the aim of promoting world peace and International secur ...

World Heritage Site in 1984 for the unique mountain landscapes found there. Numerous provincial parks are located in the Canadian Rockies, including Hamber, Mount Assiniboine and Mount Robson parks. Throughout the Rockies, and especially in the national parks, the Alpine Club of Canada maintains a series of alpine huts for use by mountaineers and adventurers.

Human history

The Rockies and the Canadian Pacific Railway

The

Canadian Pacific Railway The Canadian Pacific Railway () , also known simply as CPR or Canadian Pacific and formerly as CP Rail (1968–1996), is a Canadian Class I railway incorporated in 1881. The railway is owned by Canadian Pacific Kansas City, Canadian Pacific Ka ...

was founded to provide a link from the province of British Columbia to the eastern provinces. The main difficulty in providing such a link were the Rockies themselves: treacherous mountain passes, fast rivers and sheer drops made for a difficult railway construction process. The following articles describe in detail the political and technical feats involved: * Canadian Pacific Survey * Big Hill *

Field Hill Field Hill is a steep portion of the mainline of the Canadian Pacific Kansas City located near Field, British Columbia. Field was created solely to accommodate the Canadian Pacific Railway's need for additional locomotives to be added to trains ...

Kicking Horse Pass Kicking Horse Pass (el. ) is a high mountain pass across the Continental Divide of the Americas of the Canadian Rockies on the Alberta–British Columbia border, and lying within Yoho and Banff national parks. Divide Creek forks onto both ...

References

External links

Canadian Rockies
NASA Earth Observatory POTD, April 23, 2023. {{authority control Mountain ranges of Canada *