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What Are U Shaped Valleys?

A U-shaped valley is an ancient geological formation with high, steep sides and flat or rounded valley bottom. They result from glaciation and are frequently filled with lakes, rivers, sand traps on golf courses, kettle lakes (water hazards), and other such natural features.

The process of erosion caused by glacial erosion creates U-shaped valleys by plucking rocks from the sides and bottom of the valley. These valleys are found in mountainous regions all over the world.

They are created by glaciers.

Glaciers are huge bodies of ice that form and then move down mountains. As they degrade they form U -shaped valleys that have flat floors and steep sides. These are distinct from the valleys of rivers that are generally formed in the shape of a letter V. While glacial erosion may occur in many locations but these valleys are typical of mountain regions. In fact, they are so distinct that you can determine if the landscape has been shaped by glaciers or by rivers.

The formation of a U shaped valley begins by forming the V shaped river valley. As the glacier melts and encroaches on the V-shaped valley of the river, and forms an U-shaped inverted form. The ice also scrubbing the surface of land creating straight and high walls on the sides of valley. This process is referred to as glaciation, and it requires a great deal of strength to scour the earth in this way.

As the glacier continues to degrade the landscape, it also makes the valley more and more wide. The glacier's ice is less frictional than the rocks. As the glacier travels down the valley, it causes abrasion on the rock surfaces and pulls the rocks that are weak away from the valley wall through a process called plucking. These processes are combined to broaden, deepen and smooth the U-shaped valley.

This process also causes the small valley to "hang over the main one. The valley may be filled with ribbon lakes that are formed when water rushes through the glacier. The valley is also characterized by striations, ruts, and till on the sides as well as moraines and till on the floor.

U-shaped valleys are found all over the world. They are most often found in mountainous regions, such as the Andes Mountains, Alps Mountains, Himalaya Mountains, Caucasus Mountains, and Rocky Mountains. In the United States, they are often located in national parks. Examples include Glacier National Park and the Nant Ffrancon Valley in Wales. In certain instances valleys can expand to coastal areas and become fjords. This is a natural phenomenon that occurs when the glacier melts. It could take thousands of years to create these valleys.

They are deep

U-shaped valleys have steep sides that slop towards the base, and broad flat valley floors. They are formed by rivers valleys which have been filled with glaciers during the Ice Age. Glaciers degrade valley floors through cutting and abrasion which causes the valley to widen and deepen more evenly than it would with the flow of a river. These features are found around the world in mountainous areas which include the Andes, Alps, Himalayas, Rocky Mountains, and New Zealand.

Glacial erosion of a river valley may transform it into a u-shaped valley, increasing its depth and expanding it. The erosive power of the glacier can cause smaller side valleys to hang above the main valley, that is typically characterized by waterfalls. These are referred to as "hanging valleys" because they are hung over the main valley when the glacier recedes.

These valleys are usually surrounded by forests and may contain lakes. Some valleys are dry and are used for farming, while others are flooded and can be visited as part of a hiking or kayaking excursion. Many of these valleys are in Alaska which is the region where glacial melting is most evident.

Valley glaciers are massive like river-like flows that slowly slide down mountain slopes. They can reach depths over 1000 feet, and are the dominant type of alpine terrains that suffer from valley erosion. They eat away the rocks at the bottom of the valley, leaving behind depressions and holes filled with water. The resulting lakes are large and thin and they are located in the peaks of some mountains.

Another kind of valley, a glacial trough is a u shaped ottoman-shaped valley which extends into saltwater and forms a fjord. These are common in Norway and are called fjords, but are also found in other regions of the world. They are created by melting ice and are visible on maps of the world. They are characterized by their steep sides and round sides that form the U-shape. The walls of the troughs are typically made of granite.

The slopes are steep.

A U-shaped valley is a geomorphological feature that has steep sides, high sides and a flat base. They are quite common in mountainous regions and are usually carved by glaciers. This is because glaciers are slow moving rivers of ice which move downhill, scouring the earth as they move. Scientists used to believe that glaciers could not create valleys due to being so soft. However, now we know they are able to.

Glaciers form distinctive U-shaped valleys by the process of abrasion and plucking. Through erosion, these processes can broaden, steepen, and deepen V shaped valleys of rivers. They also alter the slopes of the valley floor. These changes happen at the front of the glacier when it is pushed into a valley. This is why a U shaped valley is often wider at the top and narrower at the bottom.

U-shaped valleys are often filled with lakes. These are referred to as kettle lakes and they form in hollows that were eroded out of the rock by the glacier, or were dammed by moraine. The lake may be a temporary feature, when the glacier melts, or it may remain even after the glacier receding. They are usually located in conjunction with cirques.

Another kind of valley is a flat-floored valley. This valley is formed by streams that erode the soil. However it does not have a steep slope like a U-shaped one. They are usually found in mountainous areas and can be older than other kinds of valleys.

There are various types of valleys in the globe. Each one has its own distinctive appearance. The most well-known type of valley is the V-shaped one, however there are also U-shaped and rift valleys. A rift valley develops in places where crust of the earth is separating. They are usually narrow valleys with steep sides. The Nant Ffrancon valley in Snowdonia, Wales is a good illustration of this.

They are wide

Contrary to V-shaped valleys, U-shaped valleys have broad bases. Glaciers are the main cause of these valleys, which are typically located in mountain ranges. Glaciers are massive blocks of snow and ice that erode the landscape as they move downhill. They cause valleys to recede by crushing the rocks with friction and abrasion. This is referred to as Scouring. As they erode the landscape, glaciers create an unusual shape that resembles a letter U. These valleys, also known as U-shaped Valleys, can be found in numerous places around the world.

The valleys are formed by glaciers that erode river valleys. The glacier's slow motion and weight erodes the valley's floor and sides creating a distinct U shape. This process is known as glacial erosion and has produced some of the most stunning landscapes on Earth.

These valleys are sometimes referred to as glacial troughs or trough valleys. They are found all over the globe, but are particularly found in areas with mountains and glaciers. They can vary in size from a few meters to several hundred kilometers. They also vary in length and depth. The deeper the valley the more intense the fluctuation of temperature will be.

When a U-shaped valley gets filled with water, it forms a ribbon lake or fjord. The ribbon lakes are formed in the depressions in which the glacier has eroded the rock with less resistance. They also can form in a valley where the glacier was halted by a wall of moraine.

U-shaped valleys can also contain other glacial features, like hanging valleys, moraine dams, and Erratics. Erratics are massive boulders that were dumped by the glacier during its movement. The erratics are often used to define the boundaries of glaciated areas.

These smaller valleys are left 'hanging" above the main valley created by the glacier. These valleys aren't as deep than the main valley and they contain less ice. These valleys are created by tributary ice, and are usually topped by waterfalls.