Fold mountains are formed due to large- scale movements in the Earth’s surface when stresses are set up in the Earth’s crust. What is/are the possible reason(s) for this?
1. Increased load of overlying rocks
2. Flow movements in the mantle
3. Magnetic intrusions in the crust
Choose the correct answer using the codes below:
Fold mountains are formed due to compressive action of forces in the Earth's crust. These are driven by magmatic convection.
Regarding fold mountains, consider the following statements:
1. Alpine mountain building phase is the recent phase to which the Himalayan mountains belong to.
2. The Ural Mountains were formed during Alpine orogeny (mountain building phase) too.
Which of the above statement(s) is/are correct?
Why a very large thickness of sedimentary rocks is found in the Fold Mountains?
Formation of Fold Mountains: Rivers deposit huge quantities of sediments in depressions called geosynclines. Over millions of years, the sediments arc compressed into sedimentary rocks such as sandstone and limestone. The plates move together forcing the sedimentary rocks upwards into a series of folds by the movement of tectonic plates. This causes the thickness of the rocks in fold mountains.
Which of the following are examples of Young FOLD mountains?
1. Himalayas
2. Alps - Europe
3. Appalachians - North America
4. Ural-Russia
5. Aravalli - India
Which of the above is/are correct?
There are three types of mountains: Fold Mountains, Block Mountains and the Volcanic Mountains.
The Himalayan Mountains and the Alps are young fold mountains with rugged relief and high conical peaks. The Aravalli range in India is one of the oldest fold mountain systems in the world. The range has considerably worn down due to the processes of erosion.
The Appalachians in North America and the Ural mountains in Russia have rounded features and low elevation. They are very old fold mountains
Which of the following are the salient features of fold Mountains?
1. They are least likely to have conical peaks.
2. They are created when large areas are broken and displaced vertically.
3. They must be associated with volcanism either from the mountain core or its vicinity.
Which of the above statement(s) is/are correct?
The Himalayan Mountains and the Alps are young fold mountains with rugged relief and high conical peaks. The Appalachians in North America and the Ural mountains in Russia have rounded features and low elevation. They are very old fold mountains.
Block Mountains are created when large areas are broken and displaced vertically. The uplifted blocks are termed as horsts and the lowered blocks are called graben. The Rhine valley and the Vosges mountain in Europe are examples of such mountain systems.
The Aravalli range in India is one of the oldest fold mountain systems in the world yet not associated with volcanic activity.
Tectonic plateaus are formed due to Earth movements that cause uplifts. Consider the following statements:
1. Meseta of Central Iberia
2. Harz of Germany
3. Bolivian plateau found between two ranges of Andes
Which of the following are tectonic plateaus found on Earth?
All are due to tectonic reasons. Some plateaus like these are found between fold mountains such as the Bolivian plateau. These are distinct from the volcanic plateaus that are formed due to the flow and consolidation of lava.
In humid highlands, several dissected plateaus like the Scottish Highlands are found. Which of the forces are responsible for the formation of such dissected plateaus?
1. Stream action
2. Cuts done due to glaciation
3. Abrasion by wind
Which of the above statement(s) is/are correct?
A dissected plateau is an area that has been severely eroded and divided into several smaller pieces.
The natural agents, such as the Sun, the rain, the wind, the running water and the Glacier, wear away the soft rocks of the upland areas.
The resistant rock masses are left there standing on the ground above the surroundings.
The sometimes from the almost level surface, cut by rivers and streams. These upland areas together form a dissected plateau.
Which is the largest physiographic division of India?
Which river bounds Bundelkhand Uplands in the north?
Which river borders Meghalaya-Mikir Uplands in the east?
Where is Shillong peak situated?
Which basin is also called Chhattisgarh Plain?
Which one of the following forms the real watershed of the Peninsula?
Which is the highest mountain in the Nilgiri Hills?
The Eastern Ghats form the eastern boundary of which region?
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