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What Are U Shaped Valleys A Ushaped valley is a geomorphological formation with steep high sides and a flat or rounded valley bottom They result from glaciation and are usually the home of rivers lakes and sand traps on golf courses kettle lakes water hazards and other natural features Glacial erosion forms Ushaped valleys when the rocks are removed from the sides and bottom of the valley These valleys can be seen in mountainous areas around the world They are created by glaciers Glaciers are massive masses of ice that form and slide down mountains As they degrade they create U shape valleys with flat floors and steep sides These valleys differ from the valleys of rivers that are generally shaped like the letter V While glacial erosion can occur in many places these valleys are especially distinctive of mountain regions They are so distinct that it is easy to determine if the landscape was formed by glaciers or rivers The process of creating a U shaped valley begins by creating a V formed river valley As the glacier recedes it it expands into the Vshaped valley of the river and forms a Ushaped inverted shape The ice also scour the lands surface creating straight and high walls on the sides of valley This is known as glaciation and requires a lot of strength to move the earth this way As the glacier continues to degrade the landscape it makes the valley larger and deeper This is because glacier has less frictional resistance than the surrounding rocks As the glacier moves through the valley it also causes abrasion to the rock surfaces This pulls weaker rocks away from valley walls through a process called plucking These processes work together to smooth widen and deepen the Ushaped valley These processes also cause a small side valley to hang above the main valley This valley is often filled with ribbon lakes which are formed by water rushing through the glacier The valley is also marked with striations and ruts till on the sides as well as moraines and till on the floor Ushaped valleys can be found across the globe They are common in mountainous regions including the Andes Alps Caucasus Himalaya 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 some cases the valleys can extend to coastal locations and then become fjords This is natural process that occurs when the glacier melts and it can take tens of thousands of years for these valleys to be formed The depths of the ocean are deep Ushaped valleys have steep sides that curve into the bottom and wide flat valley floors They are formed by valleys of rivers that were filled by glaciers during the glacial era The glaciers erode the valleys floor by abrasion and plucking which causes the valley to grow deeper and expand more evenly than a river would These features are found around the globe in mountainous areas including the Andes Alps Himalayas Rocky Mountains and New Zealand The erosion of the glacier in a valley can change it into a Ushaped one by expanding and deepening it The erosive force of the glacier can also cause smaller side valleys to be left hanging above the main valley that is typically identified by waterfalls These are referred to as hanging valleys due to the fact that they hang over the main valley when the glacier retreats These valleys may be surrounded by forest and contain lakes Some valleys can be used for farming while others are filled with water Many of these valleys are located in Alaska the place where melting glaciers are the most evident Valley glaciers are massive flowing ice like rivers that slowly creep down the slopes of mountains 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 the valley and leave the valley with holes or depressions that are then filled with water The lakes that result are wide and long and can be found on the tops of certain mountains A glacial trough is yet another kind of valley It is a U shaped valley that extends out into the salt water to create a Fjord They are found everywhere in the world and include Norway and are referred to as Fjords They are formed by melting glaciers and can be seen on a map of the world They are distinguished by their steep sides and round sides in the Ushape The walls of troughs are typically carved out of granite They are sloping A U shaped valley is a type of formation with steep high sides and a rounded bottom Glaciers are the cause of many of these valleys They are common in mountainous areas This is due to glaciers slow movement downhill and then scour the land Scientists once believed that glaciers wouldnt be able to carve valleys because they were too soft However now we know that they can Glaciers create unique Ushaped valleys as a result of the processes of abrasion and plucked Through erosion these processes can broaden steepen and deepen V formed river valleys They also alter the slopes of the valley floor These changes happen in the front of a glacier when it moves through a valley This is the reason why a U shaped valley is often wider at the top and narrower at the bottom Sometimes Ushaped valleys may be filled with lakes These are referred to as kettle lakes They are formed in hollows which were eroded out of the rock by the glacier or were dammed by moraine The lake may be a temporary one when the glacier melts or it may remain after the glacier receding They are usually associated with cirques Another kind of valley is one with a flat floor This valley is formed by streams that degrade the soil However it doesnt have a steep slope like a Ushaped one They are typically found in mountainous regions and are often older than other types There are various types of valleys in the world Each has its own unique appearance The most wellknown kind of valley is the Vshaped but there are some rift valleys that are Ushaped as well as A rift valley forms where the earths surface is breaking into two They are usually narrow valleys with steep sides This is evident in the Nant Ffrancon Valley located in Snowdonia They are broad Contrary to Vshaped valleys Ushaped valleys have broad bases Glaciers are the main cause of these valleys which are generally found in mountain ranges Glaciers are massive blocks of snow and ice that degrade landscapes as they move downwards They cause valleys to recede by crushing rocks through friction and the abrasion This is referred to as Scouring The glaciers break up the landscape in a distinctive Ushaped design These valleys also known as Ushaped Valleys can be found in a variety of locations across the globe u shaped sectional recliner sofasandcouches are formed when glaciers erode valleys of rivers The weight of the glacier and its slow movement can cause erosion of the valleys sides and floor creating a unique Ushaped shape This process known as glacial erosion has created some of the most stunning landscapes on Earth These valleys are sometimes referred to as glacial troughs or troughs These valleys can be found throughout the globe but are most often found in regions with glaciers and mountains They can range in sizes ranging from a few meters to hundreds of kilometers They also vary in depth and length The deeper the valley the greater the variation of temperature will be A ribbon lake or fjord is formed when a Ushaped valley is filled with water The ribbon lakes form in the depressions where the glacier eroded the rock with less resistance They can also form within a valley where the glacier has been stopped by walls Aside from Ushaped valleys ribbon lakes can also be filled with glacial features such as erratics hanging valleys and moraine dams Erratics are huge boulders that were left behind by glaciers during their movement The erratics are used to mark the boundaries between glaciated regions These smaller valleys are left hanging above the main valley created by the glacier They are less icecovered and are not as deep They are formed by glaciers that tributary to the main valley and are usually capped by waterfalls