How was the Loess Plateau , one of the four major plateaus in China, formed?

There are four major plateaus in our country.

They are the Qinghai-Tibet Plateau.

The Loess Plateau, the Inner Mongolia Plateau and the Yunnan-Guizhou Plateau.

There are many theories about the formation of the Loess Plateau, but the biggest cause is the wind. The Loess Plateau itself has a rugged terrain, and after tens of thousands of years of changes, the current terrain was formed. However, some scholars have put forward the theory of "water formation" and "residual accumulation".

1. The most important thing is caused by wind

There are many reasons for the formation of the earth's surface, there are both internal and external forces. The role of internal forces mainly refers to the movement of the earth's surface, and anyone who has studied geography knows that the surface of the earth will move. There are also records in history of land turning into sea, which cannot be changed by manpower.

The Loess Plateau itself is affected by internal forces, and the surface of the land gradually changes. Then, with the addition of external forces, the current appearance was formed. The external force here mainly refers to the wind force, and the Loess Plateau belongs to the interior of the continent, where there is very little rain and is in a state of drought all year round.

Under the action of the wind, a large amount of wind and sand was blown here, and after years of accumulation, the loess mound we see now was formed.

2. Flowing water also promoted the formation of the Loess Plateau

Although the Loess Plateau is in an arid zone, there are occasional heavy rainfalls. Especially in the summer, heavy rains flow through here, and the nature of the loess is loose and can be easily washed away by water. After the erosion of flowing water, the Loess Plateau has gradually changed, and many people believe that the Loess Plateau is now rugged, and a large part of the reason is the erosion of flowing water.

In fact, we can see from many programs that the washing effect of flowing water on arid areas, especially when heavy rain comes, many animals under the surface will be washed out. The Loess Plateau has been formed for many years, and it is impossible to count how many times it has rained.

In fact, many areas are wind-formed or water-formed, and basins are the best example of this. However, this is also inseparable from the changes in the earth's surface, the earth has existed for so long that no one knows what it was like in the first place.

The "Loess Plateau" was formed due to the accumulation of wind and sand, climatic conditions, etc.

Yellow sand accumulated for thousands of years, eventually turning a lake into a plateau.

In a nutshell, the Loess Plateau was formed by wind deposition.

The crust in the area has been dominated by uplifting, coupled with the sinking of the loess layer under the action of cold air.

Because of the climate, geographical location, many years of loess accumulation formed.

I think it's because of the changes in the local climate and location.

This is related to the geological structure, since it is loess, there must be loess.

The Loess Plateau was formed by wind deposition.

1. The reason for the formation of the Loess Plateau is mainly due to the accumulation of wind, and the surface morphology of the Loess Plateau is formed by the erosion of flowing water.

2. Introduction to the Loess Plateau: The Loess Plateau is located in the north-central part of China, mainly composed of the Shanxi Plateau, the Shaanxi-Gansu-Jin Plateau, the Longzhong Plateau and the Hetao Plain, which is one of the four major plateaus in China and one of the birthplaces of the ancient civilization of the Chinese nation. The Loess Plateau covers a vast area west of the Taihang Mountains, east of the Wusheling Mountains, north of the Qinling Mountains and south of the Great Wall, with a total area of 640,000 square kilometers, located on the second step of China, and is the most concentrated and largest loess area on the earth, as well as one of the most serious soil erosion and the most fragile ecological environment in the world.

<> "How did the Loess Plateau form?"

In film and television works, as soon as we see the unique yellow earth of Shaanxi, we have a sense of desolation. But where did the tens of billions of tons of loess on the Loess Plateau come from? This has always been a mystery to be solved.

According to the data, geologists of different schools have put forward at least more than 20 hypotheses about the origin of loess, most of which have been refuted.

Shui Cheng theory believes that the loess is mainly brought and accumulated from a place not far from the plateau by the action of flowing water, and flowing water plays an important role here. The silver sock sedan chair because the Yellow River once flowed through that area.

The residual theory believes that the loess of the Loess Plateau is caused by the in-situ soil formation of the rock foundation in its geology under the weathering action of tens of millions of years, otherwise there will not be so much loess at all.

According to the theory of wind formation, the formation of loess is mainly formed by the action of the wind blowing soil from other places here and accumulating it.

Although the theory of wind is considered to be the most convincing explanation. However, in recent years, the theory of polysis has been proposed, which poses a strong challenge to the theory of wind formation. Since then, the formation of the Loess Plateau has not been conclusively concluded and remains a mystery to this day.