Geografie[ bewerken ] De Rocky Mountains worden over het algemeen gedefinieerd als zich uitstrekkend van de rivier de Liard in Brits-Columbia in het noorden tot de Rio Grande in New Mexico in het zuiden. Andere bergketens lopen ook nog door tot voorbij deze twee rivieren, waaronder de Selwyn Range in Yukonhet Brooksgebergte in Alaska en de westelijke Sierra Madre in Mexicomaar die geen deel uitmaken van de Rockies, hoewel ze wel deel uitmaken van de Amerikaanse Cordillera.
Etymology[ edit ] The name of the mountains is a translation of an Amerindian name that is closely related to Algonquian ; the Cree name as-sin-wati is given as, "When seen from across The rocky mountains prairies, they looked like a rocky mass". The first mention of their present name by a European was in the journal of Jacques Legardeur de Saint-Pierre inwhere they were called "Montagnes de Roche".
The Rocky Mountains are notable for containing the highest peaks in central North America.
The Great Basin and Columbia River Plateau separate these subranges from distinct ranges further to the west.
In Canada, the western edge of the Rockies is formed by the huge Rocky Mountain Trenchwhich runs the length of British Columbia from its beginnings in the middle Flathead River valley in western Montana to the south bank of the Liard River.
Other mountain ranges continue beyond the Liard River, including the Selwyn Mountains in Yukonthe Brooks Range in AlaskaThe rocky mountains those are not part of the Rockies, though they are part of the American Cordillera.
The Continental Divide of the Americas is located in the Rocky Mountains and designates the line at which waters flow either to the Atlantic or Pacific Oceans. Farther north in Alberta, the Athabasca and other rivers feed the basin of the Mackenzie Riverwhich has its outlet on the Beaufort Sea of the Arctic Ocean.
Human population is not very dense in the Rocky Mountains, with an average of four people per square kilometer and few cities with over 50, people. However, the human population grew rapidly in the Rocky Mountain states between and The populations of several mountain towns and communities have doubled in the last forty years.
Geology of the Rocky Mountains The rocks in the Rocky Mountains were formed before the mountains were raised by tectonic forces. The oldest rock is Precambrian metamorphic rock that forms the core of the North American continent.
There is also Precambrian sedimentary argillitedating back to 1.
During the Paleozoicwestern North America lay underneath a shallow sea, which deposited many kilometers of limestone and dolomite. This mountain-building produced the Ancestral Rocky Mountains.
They consisted largely of Precambrian metamorphic rock forced upward through layers of the limestone laid down in the shallow sea. Terranes began colliding with the western edge of North America in the Mississippian approximately million years agocausing the Antler orogeny.
In Canada, the terranes and subduction are the foot pushing the rug, the ancestral rocks are the rug, and the Canadian Shield in the middle of the continent is the hardwood floor.
Scientists hypothesize that the shallow angle of the subducting plate increased the friction and other interactions with the thick continental mass above it.
Tremendous thrusts piled sheets of crust on top of each other, building the broad, high Rocky Mountain range.
Just after the Laramide orogeny, the Rockies were like Tibet: In the last sixty million years, erosion stripped away the high rocks, revealing the ancestral rocks beneath, and forming the current landscape of the Rockies.The Rocky Mountains, often called the Rockies, are a broad mountain range in western North rutadeltambor.com Rocky Mountains stretch more than 3, miles (4, kilometers) from British Columbia, in Canada, to New Mexico, in the United States forming the Continental Divide sometimes known as the "backbone" of North America.
The highest . Rocky Mountain College has received a $, grant from the Sunderland Foundation to support its transformational learning initiatives. The grant will facilitate the redesign and retrofitting of a current classroom into a technology enhanced, active learning classroom.
Hide the navigation. Show the navigation. Rocky Mountains, byname the Rockies, mountain range forming the cordilleran backbone of the great upland system that dominates the western North American continent. Generally, the ranges included in the Rockies stretch from northern Alberta and British Columbia southward to New Mexico, a distance of some 3, miles (4, km).
Animals. Climate. Return to Alpine The Rocky Mountains are located in western North America.
They are know for their beautiful scenery with mountains. The Rocky Mountains are a large mountain range located in the western part of North America in the United States and Canada. The "Rockies" as they are also known, pass through northern New Mexico and into Colorado, Wyoming, Idaho and Montana.