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What Are U Shaped Valleys? A U-shaped valley is an geological formation with high, steep sides and a flat or rounded valley bottom. These valleys are created by glaciation. They often contain lakes, rivers, sandtraps on golf courses, kettle lakes (water hazards) or other natural features. Glacial erosion causes U-shaped valleys by plucking rocks from the bottom and side of the valley. These valleys can be seen in mountainous regions all over the globe. Glaciers are the primary reason for forming them. Glaciers are massive bodies of ice that are formed on mountains and then move down them. As they degrade they create U shape valleys with flat floors and steep sides. These valleys differ from river valleys that are usually shaped in the shape of a V. While glacial erosion can happen everywhere but these valleys tend to be more common in mountainous regions. They are so distinct that it is easy to determine if the landscape was created by glaciers or rivers. The formation of a U-shaped gorge begins with an existing V-shaped river valley. As the glacier degrades the landscape, it expands into the V-shaped river valley and creates an inverted U-shaped shape. The ice also scratches the surface of the land, causing the valley's sides to have straight and high walls. This process is known as glaciation, and it requires a great deal of strength to scour the earth this manner. As the glacier continues eroding the landscape, it also makes the valley wider and deeper. This is because ice has a lower frictional resistance compared to the surrounding rocks. As the glacier moves through the valley it also causes friction on the rock surfaces and pulls the weaker rocks away from the valley walls in a process known as plucking. sofa u shape work together to smooth, widen and deepen the U-shaped valley. These processes also cause a small side valley to be left hanging over the main valley. This valley is sometimes filled with ribbon lakes, that are formed by the flow of water that flows through the glacier. The valley is also marked by striations and ruts along the sides, as well as till and moraines on the floor. The world is filled with U-shaped valleys. They are most often found in mountainous regions like 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 some instances the valleys can extend to coastal locations and transform into fjords. This is an natural process that occurs when the glacier melts and it can take hundreds of thousands of years for these valleys to be formed. They are deep U-shaped valleys have steep sides that curve towards the base, and wide flat valley floors. They are formed in valleys in rivers that were filled by glaciers during the Ice Age. The glaciers erode the valley's floor through abrasion and plucking and cause the valley to get deeper and expand more equally than a river would. These kinds of features are prevalent throughout the globe in mountainous areas, including the Andes, Alps, Himalayas, Rocky Mountains, and New Zealand. The erosion of glaciers in the valley could transform it into a U-shaped one by enlarging and deepening it. The force of erosion from the glacier can also cause smaller side valleys which are usually identified by waterfalls, to float above the main valley. These are referred to as “hanging valleys” because they hang over the main valley, as the glacier recedes. These valleys are typically covered by forests, and can contain lakes. Some valleys are dry and used for farming, while others are swamped and can be explored as part of a hike or kayaking excursion. Many of these valleys are located in Alaska in the region where melting glaciers are the most evident. Valley glaciers are massive river-like flows of ice that slowly creep down the slopes of mountains during a glaciation. They can be as deep as more than 1000 feet and are the most prevalent form of valley erosion in alpine regions. They consume the rock on the bottom of the valley, leaving the area with depressions or holes, which are then filled with water. The lakes that result are long and narrow and can be found on the peaks of certain mountains. Another type of valley, a glacial trough, is a U-shaped valley which extends into saltwater and creates a fjord. They are everywhere in the world including Norway which is where they're known as fjords. These are formed by melting the ice and can be found on maps of the world. They are typically characterized by their rounded sides, which resemble the shape of a U shape in cross-section as well as steep sides. The trough walls are usually made of granite. They are steep A U shaped valley is a type of formation with high, steep sides and a smooth bottom. Glaciers are the cause of many of these valleys. They are frequent in mountainous regions. It is due to glaciers' slow movement downhill and then scour the land. Scientists used to think that glaciers couldn't create valleys because they were so soft, but now we know that they can make these forms. Glaciers create distinctive u-shaped valleys through the processes of abrasion and plucked. Through erosion these processes can widen, steepen, and deepen V shape river valleys. They also alter the slopes of the valley floor. These changes take place at the front of a glacier when it moves through the valley. This is the reason why a U shape valley is usually larger at the top than at the bottom. U-shaped valleys are often filled with lakes. These are referred to as kettle lakes and they form in hollows which were eroded out of the rock by the glacier or dammed by the moraine. The lake may be a temporary feature when the glacier melts, or it can remain even after the glacier has receded. These lakes are usually located alongside cirques. A flat-floored Valley is a different kind of valley. It is formed by streams that degrade the soil. However it does not have a steep slope as a U-shaped one. They are typically found in mountainous areas and are often older than other types. There are different types of valleys around the globe. Each has its own distinct appearance. The most common type of valley is the V-shaped, but there are also rift and U-shaped valleys. A rift valley is formed when the earth's surface is breaking apart. These are usually narrow valleys with steep sides. This is evident in the Nant Ffrancon Valley, located in Snowdonia. They are wide In contrast to V-shaped valleys U-shaped valleys have broad bases. They are usually found in mountains and are formed by glaciers. Glaciers are huge blocks of snow and ice that alter landscapes as they move downward. They degrade valleys by friction and the abrasion. This erosion is known as Scouring. As they erode the landscape, glaciers create a distinctive shape resembling an U-shaped letter. These valleys are known as U-shaped valleys and can be located in many places around the globe. The valleys are formed when glaciers erode the valleys of rivers. The weight of the glacier and its slow movement can cause erosion of the valley floor and sides, creating a distinctive U-shaped shape. This process, referred to as glacial erosive erosion has resulted in some of the most stunning landscapes on Earth. These valleys are sometimes called trough valleys or glacial troughs. These valleys can be all over the world, but especially in regions with glaciers and mountains. They can range in dimensions from a few meters to hundreds of kilometers. They also differ in length and depth. The deeper the valley, the greater the variation of temperature will be. If a U-shaped gorge is filled with water, it develops into a ribbon lake or fjord. The ribbon lakes are formed in depressions where glaciers cut away less resistant rocks. They also can form in a valley in which the glacier was stopped by a moraine wall. U-shaped valleys can also contain other glacial features, such as moraine dams, hanging valleys and Erratics. Erratics, or huge boulders, are deposited by a glacier as it moves. 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. They are less ice-covered and aren't as deep. These valleys are carved out by tributary ice and are typically covered by waterfalls.