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A U-shaped valley is an ancient geological formation with steep, high sides as well as flat or rounded valley bottom. These valleys are created by glaciation. They often contain lakes or rivers, sandtraps along a golf course kettle lakes (water hazards), or other natural features.

The process of glacial erosion creates U-shaped valleys when rocks are removed from the sides and bottom of the valley. These valleys are common in mountainous regions all over the world.

They are formed by glaciers.

Glaciers are large bodies of ice which form on mountains and then move down them. When they melt they form U shaped valleys that have flat floors and steep sides. These are distinct from the valleys of rivers, which are usually designed to look like the letter V. While glacial erosion can occur in many locations but these valleys are characteristic of mountain areas. They are so distinct that it is easy to tell whether the landscape was formed by glaciers or rivers.

The formation of a U-shaped valley starts with an existing V-shaped river valley. As the glacier is eroding the landscape, it encroaches upon the V-shaped river valley and produces an inverted U-shaped shape. The ice also scratches the surface of the land, which causes the sides of the valley to have high and straight walls. This process is known as glaciation, and it requires a great deal of strength to move the earth in this way.

As the glacier continues to degrade the landscape, it makes the valley wider and deeper. The glacier's ice is less abrasive than the rocks. As the glacier moves through the valley it also causes abrasion of the surfaces of the rocks. This pulls the less durable rocks away from the valley walls in a process called plucking. These processes work together to widen, smoothen and deepen the U-shaped valley.

These processes also cause a tiny side valley to be left 'hanging' above the main valley. This valley is often filled with ribbon lakes that are formed by water rushing through the glacier. The valley is also characterized by striations and ruts on the sides, as in addition to moraines and till on the floor.

U-shaped valleys can be found across the globe. Most commonly, they are located 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 the Nant Ffrancon valley in Wales and Glacier National Park in Montana. In some cases, these valleys extend to coastal areas and become fjords. This is a natural process that happens when the glacier melts, and it could take hundreds of thousands of years to get these valleys formed.

They are deep

U-shaped valleys have steep sides that slop into the bottom and broad flat valley floors. They are created by river valleys that have been filled with glaciers during the Ice Age. Glaciers erode the valley floor through abrasion and plucking, which cause the valley to deepen and broaden more evenly than a river would. These features can be found in mountainous regions all over the globe, including the Andes Mountains, Alps Mountains, Himalayas Mountains, Rocky Mountains and New Zealand.

The erosion of a river valley can transform it into a u-shaped one by increasing its depth and expanding it. The erosive force of the glacier can also cause smaller side valleys to hang above the main valley, which is often identified by waterfalls. These features are known as "hanging valleys" because they hang over the main valley, when the glacier retreats.

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

Valley glaciers are massive river-like flows of ice that slowly move down mountain slopes during a glaciation. They can be as deep as 1000 feet, and are the most prevalent form in alpine areas of valley erosion. They consume the rocks on the bottom of a valley and leave behind depressions or holes that are then filled with water. The lakes that result are large and thin and they are found in the peaks of some mountains.

A glacial trough is a different type of valley. It is an u shaped reclining sectional shape valley that extends into the salt water to form an Fjord. They can be found everywhere in the world, including Norway which is where they're known as Fjords. They are formed by melting glaciers and are visible on a map of the world. They are characterized by steep sides and rounded sides in an U-shape. The trough walls are usually carved out of granite.

The slopes are steep.

A U-shaped valley is a geological feature that has steep, high sides and a rounded base. Glaciers are the reason for many of these valleys. They are prevalent in mountainous regions. This is due to glaciers being slow moving rivers of ice that travel downhill, scouring land as they move. Scientists once thought that glaciers could not create valleys because they were so soft. But now, we know that they are able to.

Glaciers cut distinctive u-shaped valleys using the processes of plucking and abrasion. These processes widen, increase the slope and deepen V-shaped valleys to a U shape by eroding. They also alter the slopes of the valley floor. These changes occur in the front of a glacier as it moves through a valley. This is the reason why a U form valley is typically wider at the top than at the bottom.

U shaped valleys are sometimes filled with lakes. These are referred to as kettle lakes. They are formed in hollows that were eroded out of the rock by the glacier or drained by the moraine. The lake may be a temporary one as the glacier melts or it could remain after the glacier has receded. They are typically found in conjunction with cirques.

Another type of valley is a flat-floored one. This valley is formed by streams that degrade the soil. However it does not have a steep slope as the U-shaped ones. They are usually located in mountainous areas and can be much older than other types.

There are various kinds of valleys across the globe. Each has its own unique appearance. The most well-known kind of valley is the V-shaped, but there are some rift valleys that are U-shaped as well as. A rift valley is formed when the earth's surface splits apart. They are typically narrow valleys that have steep sides. This is evident in the Nant Ffrancon Valley, located in Snowdonia.

They are wide

Contrary to V-shaped valleys, U-shaped valleys have broad bases. Glaciers are responsible for creating these valleys, which are usually located in mountain ranges. Glaciers are huge blocks of snow and ice that degrade the landscape as they slide downhill. They erode valleys by crushing rocks through friction and the abrasion. This process is known as scouring. The glaciers degrade the landscape in a distinctive U-shaped design. These valleys, also referred to as U-shaped valleys, can be found in numerous locations across the globe.

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

These valleys can also be called trough valleys or glacial troughs. These valleys are found all over the world, but especially in areas with mountains and glaciers. They can range in dimensions from a few meters to hundreds of kilometers. They can also vary in length and depth. The temperature fluctuation will be greater the deeper the valley.

If a U-shaped gorge is filled with water, it forms a ribbon lake or fjord. The ribbon lakes develop in depressions where glaciers have eroded less resistant rock. They can also form in valleys, where the glacier has been stopped by a wall.

Aside from U-shaped valleys, the ribbon lakes can also contain glacial features such as erratics, hanging valleys and moraine dams. Erratics are massive rocks that were left behind by glaciers during their movement. They are commonly used to define the boundaries of glaciated regions.

Hanging valleys are smaller side valleys left 'hanging' above the main valley that was created by the glacier. These valleys contain less ice and aren't as deep. These valleys are carved out by tributary ice, and are usually covered by waterfalls.