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Fold Mountains Prezi

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Amirah Ammar

on 11 January 2013

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Transcript of Fold Mountains Prezi

Add your learning about fold mountains Fold Mountains What are fold mountains?
How do they form? What are the key features/characteristics of
fold mountains? My Case Study How do humans use
fold mountains? I did a a case study on both the Himalayas (LEDC) and i found some really interesting facts about the Himalayas and Alps that I never knew before.
The Himalayas is located between India and the Tibetan Plateau in Southwest China. It passes through India,Pakistan,Afghanistan,China,Bhutan,Nepal and Burma. Mount Everest is the highest mountain in the Himalayas and there are approximately 15000 glaciers located throughout the range. The Himalayan region covers an area of 2,25m with an average width of 200 km and it is also the source for three major river systems for the continent of Asia There are few reasons on why people live in fold mountain areas such as tourism, mining,hydro-electric power, farming and forestry. Name and locate fold mountains Fold Mountains are long,high mountain ranges formed by the upfolding of sediments by powerful earth movemnets.They are formed when mountain ranges which are formed when two tectonic plates that make the earth’s crust, converge at their boundary. Millions of years ago, rivers carried the sediments and placed them into the river or sea also known as the geosyncline. After that, the geosynclines were filled with sediments that are compressed into sedimentary rocks such as limestone that are metres thick but this process didn't take place right away, it took millions of years. When two tectonic plates collide, the sediments were forced upwards into a series of folds making synclines and anti synclines. World's Young Fold Mountains Fold mountains have many different features.Some are similar to each other while others are not. Here are some of the physical features:
-High Mountain Ranges
-Pyramidal Peaks
-Layers of rock that are slightly slanted
-Lakes and flat floor valleys can be found
-U shaped valleys can also be found.
-Fast flowing rivers can be found at the base of a fold mountain Tourism in Fold Mountain Areas Tourism is a huge part of the economy in fold mountain areas.This is because a lot of people visit fold mountains each year especially during winter to go skiing,snowboarding and ice climbing. People also visit fold mountains during summer for mountain biking, climbing, walking around and enjoying the scenery and even for paragliding. Facilities such as hotels,restaurants, ski lifts and cable cars have been built for tourists that comes to visit this area. Mining in fold Mountain Areas Precious rocks and metals such as gold,diamond,sapphires,copper and silver are mined in fold mountains as well as useful rocks such as copper ore, iron ore and slate.People trade and sell these goods and because of this mining makes money in areas where it is difficult to have big industries.However, there are a few disadvantages with mining, it causes erosion and the chemicals used cause pollution.In some places such as the Alps, mining has declined due to cheaper foreign sources. HEP in fold mountain areas HEP is an abbreviation for Hydro-Electric Power, melting of glaciers and steep slopes in fold mountain areas produce fast flowing rivers that are perfect for generating hydro-electric power dams. Narrow valleys are easy to dam to generate HEP. Some of the electricity produced are also exported to towns and cities that are further away for example Switzerland gets 60% of its electricity from HEP stations in the Alps. Farming in Fold Mountain Areas In Nepal, 40% of its money comes from farming this is because farmers in the Himalayas grow crops and keep animals there. They sell and trade for milk,cheese and meat.The soils near the valley in fold mountain areas are very fertile and suitable for growing crops. During summer, animals are taken to the upland areas which allow hay and other crops to be grown and during winter season, the animals are brought back to the farm on the valley floor and they are kept in sheds. Forestry in Fold Mountain Areas Forestry is also a huge part of the economy in fold mountain areas. Coniferous are planted as crops in this area because they are resilient to goats which kill the saplings. Woods that are produce from these trees are logged and sold to make things like furniture and houses in the village. For every good point, there will always be a bad point. Although there are many uses of fold mountains and reasons why people live in that area, there are also some disadvantages of living in fold mountains. Here are some examples:
-When a lot of tourists come, they might cause a lot of problems on the local environment and if the tourists travels with cars, buses or any other transportation, it might increase pollution in the area
-It is difficult for farmers to use machinery on the steep slopes and they also have short growing season.
-Most of the time the climate there is cold and wet so it is difficult for industrial and agricultural activity to take place.
-Avalanches are also dangerous because it may cause deaths and destroy houses of villagers
-Trading for goods are limited because it is difficult to trade goods with people outside the area. The roads there are not suitable and wide enough to transport things.
-HEP works when there's a source of fast flowing water but during winter, the water freezes so, people won't be able to generate electricity
-In addition, the construction of dams can effect natural river systems Dangers and problems in the Himalayas There are also some dangers and problems in the Himalayas that can cause death and destroy villages there, for example:
-Violent earthquakes that happens regularly.
-Glaciers form floods
-Snow storms
-Summers are too hot and winters are too cold
-Climate is unpredictable and dangerous. Advantages of living in the Himalayas -Tourism gives great income to the people living in the Himalayas.A million people go there every year for the trekking,climbing and to visit temples.
-Precious rocks and metals such as gold,diamond,silver,sapphire and ore can be found in the Himalayas and people do open cast mining to get them. People could sell them to the tourists and make money.
-40% of Nepal's money come's from selling farm products.Farmers in the Himalayas grow crops and keep animals there. The soil near the valley is very fertile which makes it good for growing crops
-Settlements that are build there can have great access to clean and clear water form the glaciers.The place is also great for farming and the view there is beautiful
-Glaciers help generate hydroelectric power and this gives people electricity in the Himalayas. The cost for HEP is also low Disadvantages in the Himalayas -The altitude might not be suitable for tourists so because of this, they could be very ill.
-People could slip and fall on ice which will cause injuries
-Open cast mining can cause more erosion and the chemicals that are used can pollute the clean water and the air.
-If it rains on the slopes, the crops that are planted will slide down.
-Settlements that are build there are most likely to be destroyed by avalanches and other natural disasters
-People living there are isolated and it is also difficult for them to find food.
-Trading for goods are also limited in the Himalayas because of the communication links there.
-When water freezes people wont be able to generate electricity.
-Constructions of Dams can affect natural river systems and water created by dams are colder and contain less oxygen. Ocean Trenches
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