Portal:Mountains

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Introduction

Silvretta panorama from the Ochsenkopf
Silvretta panorama from the Ochsenkopf
Mount Everest, Earth's highest mountain

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 300 metres (980 ft) 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 tend to be used less for agriculture and more for resource extraction, such as mining and logging, along with recreation, such as mountain climbing and skiing.

The highest mountain on Earth is Mount Everest in the Himalayas of Asia, whose summit is 8,850 m (29,035 ft) above mean sea level. The highest known mountain on any planet in the Solar System is Olympus Mons on Mars at 21,171 m (69,459 ft). (Full article...)

Selected mountain-related landform

Miller's Cove in Tennessee is an example of a typical Appalachian cove, an enclosed valley in the mountains.

In the central and southern Appalachian Mountains of Eastern North America, a cove is a small valley between two ridge lines that is closed at one or both ends.

Among the places where the word "cove" appears in the name of an Appalachian valley are Morrison Cove in Pennsylvania; Lost Cove, North Carolina; Bumpass Cove, Tennessee; Doran Cove, Grassy Cove, Ladd Cove, in or adjacent to the Sequatchie Valley of Tennessee and Alabama; and numerous locations in the Great Smoky Mountains, including Cades Cove, Greenbrier Cove, Miller Cove, Tuckaleechee Cove, and Wears Cove. Burke's Garden in western Virginia is another example of a cove. (Full article...)

Selected mountain range

The Livigno Alps are a mountain range in the Alps of eastern Switzerland and northern Italy, around the Italian village Livigno. They are considered to be part of the Central Eastern Alps.

The Livigno Alps are separated from the Bernina Range in the south-west by the Bernina Pass; from the Albula Alps in the north-west by the Upper Engadin valley; from the Sesvenna Alps in the north-east by the Spöl valley; from the Ortler Alps in the east by the Passo di Fraéle and the upper Adda River valley (Valtellina). (Full article...)

Selected mountain type

Mount Ararat, Turkey

A complex volcano, also called a compound volcano or a volcanic complex, is a mixed landform consisting of related volcanic centers and their associated lava flows and pyroclastic rock. They may form due to changes in eruptive habit or in the location of the principal vent area on a particular volcano. Stratovolcanoes can also form a large caldera that gets filled in by a lava dome, or else multiple small cinder cones, lava domes and craters may develop on the caldera's rim.

Although a comparatively unusual type of volcano, they are widespread in the world and in geologic history. Metamorphosed ash flow tuffs are widespread in the Precambrian rocks of northern New Mexico, which indicates that caldera complexes have been important for much of Earth's history. Yellowstone National Park is on three partly covered caldera complexes. The Long Valley Caldera in eastern California is also a complex volcano; the San Juan Mountains in southwestern Colorado are formed on a group of Neogene-age caldera complexes, and most of the Mesozoic and Cenozoic rocks of Nevada, Idaho, and eastern California are also caldera complexes and their erupted ash flow tuffs. The Bennett Lake Caldera in British Columbia and the Yukon Territory is another example of a Cenozoic (Eocene) caldera complex. (Full article...)

Selected climbing article

Competition bouldering climbers at the IFSC World Cup 2017 pre-inspecting the boulder problems to figure out the beta.

Beta is a climbing term that designates information about how to ascend a climbing route, and the specific climbing techniques required—and how to apply them—to overcome the key challenges encountered. Traditionally sourced in climbing guidebooks, online databases and apps now provide detailed climbing beta. The term is attributed to Texan climber Jack Mileski.

When a climber completes a route on their first attempt and without falling, it is called an onsight if they had no beta, or a flash if they had beta (a completion after several failed attempts is called a redpoint). New grade milestones in the on-sighting and flashing of routes are actively followed in the climbing media. The discovery of new beta has led to the re-grading of notable and historic climbing routes. (Full article...)

Related portals

General images

The following are images from various mountain-related articles on Wikipedia.

Selected skiing article

Ski Cross competitors navigating a jump during January 2010 World Cup competitions in Les Contamines-Montjoie, France

Ski cross is a skiing competition which incorporates terrain features traditionally found in freestyle skiing with courses which include big-air jumps and high-banked turns. In spite of the fact that it is a timed racing event, it is often considered a type of freestyle skiing. What sets ski cross apart from other alpine skiing disciplines is that it involves more than one skier racing down the course. Any intentional contact with other competitors like grabbing or any other forms of contact meant to give the competitor an advantage leads to disqualification.

Ski cross is a part of the FIS Freestyle World Ski Championships, the world championship organized by the FIS for freestyle skiing. First organized in 1986, the world championship is now held every odd year. In 2010 the sport debuted as a part of the Winter Olympic Games and has been contested ever since. It was a part of the Winter X Games until 2012. (Full article...)

Subcategories

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Topics

NASA Landsat-7 imagery of Himalayas
NASA Landsat-7 imagery of Himalayas
Shivling
Shivling
Eruption of Pinatubo 1991

Flora and fauna

Climbing in Greece
Climbing in Greece

Lists of mountains

Recognized content

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