Rocky Mountains are a vast range of fold mountains in western North America with individual volcanoes. The mountains extend, depending on the definition, about 4500-5000 km from Mexico through the continental United States to Canada and Alaska and are one of the major geographical provinces of the United States.
In addition to the actual Rocky Mountains in western Canada and the U.S. states of Montana , Idaho , Wyoming , Colorado and New Mexico are among several mountain ranges in Alaska and the Yukon – including the Alaskakette the Brooks Range and the Elias chain – and the Columbia Mountains to the Canadian Pacific Coast to do so. Some are even the Sierra Madre Occidental and Sierra Madre Oriental to be counted in Mexico and adjacent United States, occasionally even the Transverse Volcanic Sierra and Sierra Madre del Sur in southern Mexico. Not belong to the Rocky Mountains, the Coast Mountains , the Cascade Range and the Sierra Nevada.
The highest peak is Mount McKinley in Alaska, with 6194 m , followed by Mount Logan in Canada, with 5959 m . Mount Elbert in Colorado is 4401 m the highest mountain in the Rocky Mountains proper. The Rocky Mountains are part of the Tierra del Fuego to Alaska, reaching Cordillera . It is home to major national parks such as Yellowstone National Park and various winter sports centers . They are also rich in mineral resources. The region located in the Rocky Mountains U.S. states is Mountain States called.
600-700 million years ago, had been produced in North America, huge mountains, but these were removed in the next 400 million years ago, almost completely. Only a few rock masses in the South date back to that past time. Today’s Rocky Mountains emerged largely during the geologists as lara mix orogeny mentioned time period, which began about 70 million years ago and ended about 30-40 million years ago. After the mountains were about as high as the Himalayas today, began in parts of North West America and large parts of the crust to stretch to the southwest of the mountain plateau were subject to a strong expansion process, which could leave them in the mountain ranges, plateaus and valleys. This area is now a Basin and Range Province known and comprises desert Great Basin and adjacent regions. Between the late Pleistocene and Holocene (70000-11000 years ago), the Rocky Mountains were glaciated to a large extent.
The Rocky Mountains consist largely of metamorphic – and igneous rocks . At the edges of the southern Rocky Mountains is a younger sedimentary rocks found in the San Juan Mountains and in other areas sometimes volcanogenic rocks of the Tertiary. The width (east-west extension) of the mountain range vary greatly. At the widest, the Rocky Mountains are in the U.S. state of Colorado with 500-600 km. From the Yellowstone area to the north, they split into several mountain ranges, some with small widths of 50-120 km.
On average, the Rocky Mountains, 2000-3000 feet high. The highest peaks of the Rocky Mountains are found in the north. From Glacier National Park to the north, they are increasingly glaciated. Also in the northern half, you’ll find extensive plateaus – the largest is the Great Divide Basin – bounded by parallel mountain ranges. In the southern part of the mountain forms usually have more rounded forms of erosion.
In the Rocky Mountain West, there is often wind, which drives up the clouds from the Pacific and they can rain down on them and jam. This has for the Pacific coast than average rainfall and the effect of the underlying Great Plains drought. The weather in the Rocky Mountains is usually cloud-covered themselves accordingly. An exception is the Yellowstone area, where there may be several weeks of fair weather periods.
The climate of the Rocky Mountains, is typical of the highlands. The average temperature is around 6 ° C. At 28 ° C in July the hottest month of January is -14 ° C, the coldest. The annual rainfall is estimated cm at 36th
The summers in the Rocky Mountains are at 15 ° C and 15 cm of precipitation warm and dry. In July it sensed an average of 18 hours. Especially in August, thunderstorms often cause forest fires.
The winter is very cold and wet at -2 ° C and 29 cm of precipitation. Snow layers from five to six meters are not uncommon, even in the north they can be 15-18 meters. However, sometimes penetrate in winter warm air masses from the Pacific Ocean inland. This wind is Chinook called and can cause sudden increases in temperature of 20-25 ° C.
With an average of four people per square kilometer, the population density of the Rocky Mountains is quite low and there are few cities with more than 50,000 inhabitants. However, it is in the mountains is a popular holiday destination for people who enjoy either the landscape or sports you want. Every year millions of tourists travel to the Rockies. In summer, the most popular attractions in the U.S. Pikes Peak , Royal Gorge , Rocky Mountain National Park , Yellowstone National Park , Grand Teton National Park and Glacier National Park and The Mount Robson Provincial Park . Mount Revelstoke National Park and Glacier National Park are located west of the Rocky Mountains in the actual Columbia Mountains, separated by the broad Rocky Mountain Trench , where the Columbia River flowing through it. In winter, however, is skiing the main attraction. The main ski resorts are Aspen , Vail , Keystone , Breckenridge and Copper Mountain in Colorado , Alta , Park City and Snowbird in Utah , Sun Valley in Idaho , Whitefish Mountain Resort (formerly Big Mountain) and Big Sky in Montana , Lake Louise and Sunshine Village in Alberta and Fernie and Whistler in British Columbia .