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Classify the mountains.

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Classification of mountains: Mountains are the Second Order Relief. These are originated due to endogenetic forces. All the mountains found the world are not similar. Variations are found in their formation process, height, age, location, structure and texture. On the basis of these factors, 

The mountains found in the world are classified into the following types:

In the classification of mountains made on these different bases, the classification made on the basis of origin is significantly important. 

A brief description of this classification of mountains is as follows:

1. Folded Mountain: Folded mountains are defined as the formation of folding of crustal rocks by compressive forces generated by endogenetic forces coming from within the earth. Raised part by compression force is called anticline and stuck down part is called syncline. Quick geologic movements lift up the folds of anticline and syncline and over the period of time fold mountains are uplifted. Himalaya, Ural and Andes mountains are the examples of folded mountains. These are the new mountains of the world and fossils are not found in their rocks. 

2. Dome – Shaped Mountain: The boiling hot magma inside the earth makes every effort to come on the surface of earth. When this magma does not come out, then the surface rocks elevate in the shape of a dome. Henry and Unta mountains in Utah state of North America are the examples of this type of mountain. 

3. Accumulated Mountain: These mountains are formed by the collected debris and deposited substances accumulated in the form of large piles by air, river, glacier, waves and volcano. Fujiyama mountain of Japan, Vesuvius mountain of Italy and Kilimanjaro mountain of Africa are the volcano accumulated mountains. 

4. Fault or Block Mountain: When the intermediate part between two parallel cracks is elevated upwards or both the two sides of the middle part are stuck downwards, then the Block Mountain is originated. Due to their formation by faults, these mountains are also called the Fault Mountains.

5. Residual Mountain: Residual mountains are the reminants of old mountains which have been worn down by agents of denudation like river, wind, waves, glacier, etc. They are usually hard resistant rocks that are left standing after the surrounding areas have been reduced by agents of denudation. When the river erodes the plateau terrain and reduces it to the flat plain, but cannot erode the part of intermediate rocks, then it takes the form of Residual Mountain. 

6. Mixed Mountain: Mountain which is alike all types of mountains or more than one type of mountain is called the Mixed Mountain.

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