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'''Valley'''
== Valley ==


A '''valley''' is a low area between hills or mountains typically with a river running through it. In geology, a valley or dale is a depression that is longer than it is wide. The terms U-shaped and V-shaped are descriptive terms of geography to characterize the form of valleys. Most valleys belong to one of these two main types or a mixture of them, with respect of the cross section of the valleys.
A '''valley''' is a low area between hills or mountains, often with a river running through it. Valleys are one of the most common landforms on Earth and can be formed through various geological processes, including erosion by rivers or glaciers.


== Formation ==
== Formation ==
Valleys are primarily formed by the erosive action of rivers and glaciers. [[River valleys]] are typically V-shaped, formed by the river cutting down into the earth over time. [[Glacial valleys]], on the other hand, are U-shaped, carved by the movement of glaciers.


Valleys are formed through various geological processes. These include erosion by water, river, and glacier. The mechanism of formation is usually erosion by water, wind, and ice. The process of erosion usually occurs over a long period of time, often over millions of years.
=== River Valleys ===
River valleys are created by the continuous flow of water that erodes the land, creating a V-shaped profile. The [[Nile Valley]] in Egypt and the [[Indus Valley]] in Pakistan are examples of river valleys that have supported ancient civilizations.
 
=== Glacial Valleys ===
Glacial valleys are formed by the movement of glaciers, which carve out a U-shaped profile. The [[Yosemite Valley]] in the United States is a famous example of a glacial valley.


== Types of Valleys ==
== Types of Valleys ==
Valleys can be classified into several types based on their formation and characteristics:


There are various types of valleys, each with its unique characteristics. These include:
* '''V-shaped valleys''': Formed by river erosion, characterized by steep sides and a narrow bottom.
 
* '''U-shaped valleys''': Formed by glacial activity, with a broad, flat floor and steep walls.
* '''[[Rift Valley]]''': These are formed by [[plate tectonics]] and are typically found in locations where the Earth's crust is being pulled apart.
* '''Flat-floored valleys''': Often formed by the deposition of sediments, these valleys have a wide, flat bottom.
 
* '''[[River Valley]]''': These are formed by the erosive activity of a river over a long period of time.


* '''[[Glacial Valley]]''': These are formed by the action of glaciers. They are typically U-shaped.
== Importance ==
 
Valleys are crucial for human habitation and agriculture. They often have fertile soil due to the deposition of sediments by rivers, making them ideal for farming. Many major cities and civilizations have developed in valleys due to the availability of water and fertile land.
== See also ==


== Related Pages ==
* [[Canyon]]
* [[Canyon]]
* [[Gorge]]
* [[Gorge]]
* [[Dell (landform)]]
* [[Rift valley]]
* [[Hollow (landform)]]
* [[Floodplain]]
* [[Water gap]]


== References ==
== Gallery ==
<gallery>
File:Salta-VallesCalchaquies-P3140151.JPG|Valley in Salta, Argentina
File:Glacier_park1.jpg|Glacial valley in Glacier National Park
File:Romsdalen.jpg|Romsdalen Valley, Norway
File:Vale_dos_Frades.jpg|Vale dos Frades, Portugal
File:Baemsagol_MS3812.JPG|Baemsagol Valley, South Korea
File:Halikonjokilaakso.jpg|Halikonjokilaakso Valley, Finland
File:Palakaria-and-Belchin-3.jpg|Palakaria Valley, Bulgaria
File:Tal-y-llyn-valley-Dolgoch-01.jpg|Tal-y-llyn Valley, Wales
File:Glacial_Valley_MtHoodWilderness.jpg|Glacial valley in Mt. Hood Wilderness, USA
File:Pirin_ezera_Pano_Chairski_ezera.jpg|Pirin Valley, Bulgaria
File:Paria_View_at_Bryce_Canyon_NP.jpg|Paria View, Bryce Canyon National Park
File:Closeup_of_Bridalveil_Fall_seen_from_Tunnel_View_in_Yosemite_NP.JPG|Bridalveil Fall, Yosemite National Park
File:Indus_Kohistan_Pakistan.jpg|Indus Valley, Pakistan
File:DirkvdM_orosi.jpg|Orosi Valley, Costa Rica
File:"Flowers_Blossom_at_Valley_of_Flowers_Chamoli,_India"_58.jpg|Valley of Flowers, India
File:Harau_valley.jpg|Harau Valley, Indonesia
File:Hells_Gate.jpg|Hell's Gate, Kenya
</gallery>


<references />
{{Geography-stub}}
 
== External links ==
 
* [http://www.britannica.com/EBchecked/topic/622445/valley Valley] at [[Encyclopædia Britannica]]


[[Category:Valleys]]
[[Category:Valleys]]
[[Category:Landforms]]
[[Category:Geomorphology]]
{{stub}}

Revision as of 01:07, 10 February 2025

Valley

A valley is a low area between hills or mountains, often with a river running through it. Valleys are one of the most common landforms on Earth and can be formed through various geological processes, including erosion by rivers or glaciers.

Formation

Valleys are primarily formed by the erosive action of rivers and glaciers. River valleys are typically V-shaped, formed by the river cutting down into the earth over time. Glacial valleys, on the other hand, are U-shaped, carved by the movement of glaciers.

River Valleys

River valleys are created by the continuous flow of water that erodes the land, creating a V-shaped profile. The Nile Valley in Egypt and the Indus Valley in Pakistan are examples of river valleys that have supported ancient civilizations.

Glacial Valleys

Glacial valleys are formed by the movement of glaciers, which carve out a U-shaped profile. The Yosemite Valley in the United States is a famous example of a glacial valley.

Types of Valleys

Valleys can be classified into several types based on their formation and characteristics:

  • V-shaped valleys: Formed by river erosion, characterized by steep sides and a narrow bottom.
  • U-shaped valleys: Formed by glacial activity, with a broad, flat floor and steep walls.
  • Flat-floored valleys: Often formed by the deposition of sediments, these valleys have a wide, flat bottom.

Importance

Valleys are crucial for human habitation and agriculture. They often have fertile soil due to the deposition of sediments by rivers, making them ideal for farming. Many major cities and civilizations have developed in valleys due to the availability of water and fertile land.

Related Pages

Gallery

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