differentiate between a gorge and a rift valley Related: NCERT Soluti...
George valley:
1. gorge valley is formed due to a continuous flow of water and has steep sides.
2. it is rocky and is also formed due to the flow of lava.
3. their walls are made of sandstone, granite, and limestone.
4. it is referred to as a ravine with water flowing in it.
Rift valley:
1. they are formed because of the tectonic movements.
2. it is formed when the outer layer of the earth drifts or splits.
3. it is steep and is found in the outer most layer of the earth.
4. it is narrow and steep.
This question is part of UPSC exam. View all Class 9 courses
differentiate between a gorge and a rift valley Related: NCERT Soluti...
Gorge and Rift Valley: Differentiation
A gorge and a rift valley are both geological landforms that are formed due to various processes. While they may appear similar in some aspects, there are distinct differences between the two.
Gorge:
A gorge is a deep and narrow valley with steep sides, often carved out by a river or a stream. It is typically characterized by its V-shape and is formed through erosion. Gorges are usually found in mountainous or hilly regions. Here are some key features of gorges:
1. Formation: Gorges are formed due to the erosive action of water. Over thousands of years, rivers or streams erode the land, cutting through the rocks and deepening the valley.
2. Shape: Gorges have steep and often vertical sides, which are the result of the erosive force of the flowing water. The depth of a gorge can vary significantly.
3. Location: Gorges are commonly found in mountainous regions, where rivers flow through narrow valleys. Examples of famous gorges include the Grand Canyon in the United States and the Tiger Leaping Gorge in China.
4. Formation Process: The formation of a gorge involves different stages. Initially, a river starts eroding the rocks, creating a narrow channel. As the erosion continues, the channel deepens, and the sides become steeper. Over time, the gorge widens due to the lateral erosion caused by the river.
Rift Valley:
A rift valley, on the other hand, is a long, narrow valley that is formed due to tectonic activity. It is characterized by its flat bottom and steep, sometimes sheer, walls. Here are some key features of rift valleys:
1. Formation: Rift valleys are formed when tectonic plates pull apart, creating a linear depression on the Earth's surface. This process is known as rifting and occurs along fault lines.
2. Shape: Rift valleys have a distinct U-shape or V-shape and are often asymmetrical. The valley floor is relatively flat, while the walls are steep and can be several kilometers high.
3. Location: Rift valleys are commonly found at the boundaries of tectonic plates. Well-known examples include the Great Rift Valley in East Africa, which stretches over 6,000 kilometers, and the Rhine Valley in Europe.
4. Formation Process: Rift valleys are formed through a series of geological processes. Initially, tensional forces cause the lithosphere to crack, creating a rift. This rift gradually widens as the Earth's crust stretches and thins. Over time, the central portion of the rift sinks, forming a valley, while the surrounding blocks uplift, creating steep walls.
In summary, the main difference between a gorge and a rift valley lies in their formation processes. Gorges are formed by the erosive action of water, while rift valleys are created through tectonic activity. Gorges are typically found in mountainous regions and have steep sides, while rift valleys occur at plate boundaries and have flat bottoms and steep walls.
differentiate between a gorge and a rift valley Related: NCERT Soluti...
Some differences between george and rift valley are as follows:
GEORGE | RIFT
1》George valley is 1》It is narrow and
steep.
formed due to
continious flow of water 2》 It is formed
and has steep sides. when the outer
. layer of the earth
2》It is rocky and it is drifts or split.
also formed due to
flow of lava. 3》They are formed
because of the
tectonic movements.
3》There walls are
made up of sandstone
,granite,limestone.
To make sure you are not studying endlessly, EduRev has designed Class 9 study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Class 9.