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What Are U Shaped Valleys? A U-shaped valley is an geological formation that has steep, high sides and a rounded or flat valley bottom. These valleys are formed by glaciation. They are often filled with lakes, rivers, sandtraps on golf course, kettle lakes (water hazards) or other natural features. Glacial erosion forms U-shaped valleys when the rocks are removed from the sides and the bottom of the valley. These valleys can be found in mountainous regions across the world. They are created by glaciers. Glaciers are massive bodies of ice that form and then move down mountains. When they degrade the landscape, they form U-shaped valleys with flat floors and steep sides. These are distinct from river valleys, which are usually shaped like the letter V. While glacial erosion may be seen in a variety of places, these valleys are especially distinctive of mountain regions. They are so distinct that you can determine if the landscape has been shaped by glaciers or rivers. The formation of a U-shaped gorge begins with an existing V-shaped river valley. As the glacier is eroding the landscape, it expands into the V-shaped river valley and produces an inverted U shape. The ice also damages the surface of the ground, causing the sides of the valley to have high and straight walls. This process is called glaciation, and it requires an enormous amount of strength to scour the earth in this manner. As the glacier continues to degrade the landscape, it also makes the valley larger and deeper. This is because ice has less frictional resistance than the surrounding rocks. As the glacier travels down the valley, it causes scratches on the rocks and pulls the rocks that are weak away from the valley walls through a process called plucking. These processes help to smooth, widen and deepen the U-shaped valley. These processes also cause a small side valley to be left hanging above the main valley. This valley can sometimes be filled with ribbon lakes formed when water rushes through the glacier. The valley is also marked with striations, ruts and till on the sides, as well as moraines and till on the floor. U-shaped valleys are commonplace across the globe. They are most often found in mountainous areas like the Andes Mountains, Alps Mountains, Himalaya Mountains, Caucasus Mountains, and Rocky Mountains. In the United States, they are usually found in national parks. Examples include Glacier National Park and the Nant Ffrancon Valley in Wales. In certain instances, valleys can extend to coastal areas and become Fjords. This is a natural process that occurs when the glacier melts. It can take thousands of years to build these valleys. They are deep U-shaped valleys have steep sides that curve in at the base and broad flat valley floors. They are formed by valleys in rivers that were filled by glaciers during the ice age. Glaciers degrade the valley floor by plucking and abrasion which causes the valley to grow deeper and broaden more evenly than a river could. These features are found around the world in mountainous areas which include the Andes, Alps, Himalayas, Rocky Mountains, and New Zealand. The erosion of a river valley may transform it into a u-shaped valley by expanding and deepening it. The glacier's erosive force can also cause smaller side valleys, which are often marked by waterfalls, to float above the main valley. These features are called “hanging valleys” because they hang above the main valley when the glacier retreats. These valleys may be surrounded by forest and contain lakes. Some valleys are dry and used for farming, while others are swamped and can be explored as part of a hiking or kayaking excursion. A majority of these valleys are located in Alaska which is where glacial melt is the most evident. Valley glaciers are huge, river-like flows that slowly slide down the slopes of mountains. They can be as deep as 1000 feet, and are the dominant form in the alpine regions of valley erosion. They eat away at the rocks on the bottom of the valley and leave behind depressions or holes that are then filled with water. The resulting lakes are long and thin, and can be located in the peaks of a few mountains. Another type of valley, a glacial trough is a U-shaped trough that extends into saltwater and forms an Fjord. They are prevalent in Norway in Norway, where they are known as fjords. However, they are also found in other areas of the world. They are created by melting the ice and can be found on maps of the world. They are usually characterized by rounded sides that mimic an U shape in cross-section as well as steep sides. The trough walls are generally carved out of granite. The slopes are steep A U form valley is a formation of geology with high, steep sides and a smooth bottom. They are very common in mountainous regions and are often carved by glaciers. This is because glaciers are slow moving rivers of ice which move downhill, scouring the earth as they move. Scientists once believed that glaciers wouldn't be able to carve valleys because they were so soft. However, now we know they can. Glaciers form distinctive u-shaped valleys through the processes of abrasion and plucking. Through erosion these processes can widen, steepen, and deepen V shape valleys of rivers. The valley's slopes bottom are also altered. These changes occur in the front of a glacier when it traverses a valley. This is why the top of U-shaped valleys is usually wider than the bottom. Sometimes, U-shaped valleys can be filled with lakes. These lakes are called kettle lakes. They are formed in hollows which were eroded out of the rock by the glacier, or were dammed by the moraine. The lake may be a temporary feature as the glacier melts, or it may remain after the glacier receding. These lakes are often found in conjunction with cirques. A flat-floored Valley is another kind of valley. It is a valley that is formed by streams that break up the soil, however it does not have the same slope as a U-shaped valley. They are usually found in mountainous areas and can be a lot older than other types of valleys. There are a variety of valleys across the globe, and each has its own distinct appearance. The most well-known is a V-shaped one, however, other forms include U-shaped valleys as well as rift valleys. A rift valley develops in places where earth's crust is splitting apart. They are typically narrow valleys with steep sides. The Nant Ffrancon valley in Snowdonia, Wales is a good example of this. They are wide U-shaped valleys are characterized by their broad bases, unlike V-shaped ones. Glaciers are the main cause of these valleys, which are generally found in mountain ranges. Glaciers are huge blocks of snow and ice that erode the landscape as they move downhill. They erode valleys by crushing the rocks with friction and the abrasion. This erosion is called the scouring. The glaciers break up the landscape in a distinctive U-shaped pattern. These valleys are known as U-shaped valleys and are found in a variety of locations across the world. These valleys are formed when glaciers degrade valleys of rivers. The weight of the glacier and its slow motion erodes the valley's floor and sides, creating a distinctive U-shaped shape. This process, also known as glacial erosive erosion has resulted in some of the most beautiful landscapes on Earth. These valleys are often referred to as glacial troughs or troughs. They are found all over the globe, but are particularly found in regions with glaciers and mountains. They can vary in dimensions from a few meters to hundreds of kilometers. They can also vary in length and depth. The deeper the valley is, the larger the fluctuation of temperature will be. When a U-shaped valley gets filled with water, it develops into a ribbon lake or fjord. The ribbon lakes develop in the valleys where the glacier eroded the rock that was less resistant. They can also form within a valley in which the glacier is stopped by the wall. Aside from U-shaped valleys, the ribbon lakes can also contain glacial features like erratics, hanging valleys and moraine dams. Erratics, or huge boulders, are formed by glaciers as the latter moves. The erratics can be used to define the boundaries between glaciated areas. Hanging valleys are smaller side valleys that are hanging above the main valley created by the glacier. huge u shaped sectional are not as ice-filled and are not as deep. These valleys are created by tributary ice, and are usually overshadowed by waterfalls.