How sand is made, how desert sand is formed

Sand is a natural stone in the natural state, by the force of water for a long time repeated collision, friction production, its composition is more complex, the surface has a certain smoothness, the content of impurities of non-metallic ore.

The river sand particles are smooth, relatively clean, and wide; River sand has no taste, and sea sand has a salty taste. After drying and screening, river sand can be widely used in various dry mortars; For example, thermal insulation mortar, adhesive mortar and plastering mortar are washed, dried, and graded river sand as the main aggregate. The strength is similar to that of mortar made of quartz sand.

Therefore, river sand generally plays an irreplaceable role in construction and decoration.

The first to explain wind erosion sorting!

This explanation is not fabricated out of thin air, but scientists have studied some specific deserts, such as the Nevada Desert in the United States, the Taklamakan Desert in China, and the Gurbantunggu Desert in China.

Yes, due to the large temperature difference between day and night in the high mountains, the rocks of the mountain will become very brittle after being exposed to the sun during the day and getting cold at night, and the rocks will be very easy to break at this time, so after the wind blows, if the rocks are located in the upper floors under the action of the wind, they will also have a grinding effect with the ice in the cryosphere, and if the debris produced by the rocks is more broken, then these debris will usher in the sun after the glacier, and finally become our common sand under the action of natural weathering.

At this time, the light grit will be blown to the final destination under the action of the wind, and the grit in the texture will be left on the rock again waiting for new weathering, and the destination of this sand will eventually evolve into a terrifying desert over time. One of the characteristics of this type of desert is that it is surrounded by high mountains.

The second explains the role of the river!

This explanation is obvious, that is, there are no mountains around the desert, but there is still a desert, a more typical desert formed by the river Horqin Sandy Land, the main ** of these sand is the sand washed out by the river, you must know that the river has been rushing, has a natural grinding effect, the achievement is thought to be washed away to form debris of the rocks, the river will also form a large alluvial plain, once there is a drought, then these alluvial plains will gradually weathered to form sand, so that the formation of a river desert.

The third explanation is the physical weathering of sandstone!

This is the third type of desert, which is neither backed by mountains nor alluvial plains left by arid rivers, so how did the sand of this type of desert form? During geological time, there was a type of sandstone composed mainly of sand, which was more easily weathered into sand than rocks, such as the Mu Us Desert, where the sand was mainly weathered from the rocks of the Cretaceous dunes.

The fourth explanation is that it is influenced by a combination of land, ocean currents and weather!

Like the Atacama Desert in South America and the Namibi Desert in Africa, these two deserts are located on the west coast of the Tropic of Cancer and the Tropic of Capricorn. In summary, all four explanations have relatively typical deserts, which means that the sand of different deserts on Earth is different, but in the final analysis, these sands are formed from rock debris.

Desert sand, like the sand on the seashore, is formed by weathering, extrusion, erosion, decomposition, erosion, and sedimentation of rocks. As the earth's crust fluctuates, it rises to the surface.

Therefore, it cannot be used in building structures like sea sand.

Rocks are weathered and washed by rain or rolled from rocks.

Sand is generally divided into two categories: natural sand and artificial sand. Rock particles formed by natural conditions (mainly rock weathering) with a particle size of less than 5mm are called natural sand.

How sand is formed] Sand grains are small, but they have great potential.

Introduction: Sand is the most common in our daily life, we need it for the house we live in, and we also need it for the road we walk, which shows that sand is so important to us. The grains of sand are small, but they have great potential.

Together, these fine grains of sand can be used for many purposes, such as building houses and repairing road surfaces, as well as filtration, farming, and landscaping. Sand is so powerful, so let's take a look at how exactly sand is formed, shall we?

Sand or sand is a kind of fine particle or something shaped like sand. It is formed by weathering rocks, and small grains of sand are deposited to form soil, that is, plains; Medium-quality sand grains are deposited by the action of the wind and carried by the flow of water to form sandy beaches; Mass sand particles will remain in place and continue to weather, eventually turning into soil. This is how the soil on Earth is now formed.

Sand is a very fine rock particle that is divided and has a size of: These particles within this size are called sand grains. In geology, the size is called mud, and the size of 2-64 mm is called gravel.

There is a rustling sensation when rubbing the sand with your fingers, while mud has a powdery sensation.

Sand (sand) is one of the main constituent materials of concrete and mortar, and it is also the most commonly used material in civil engineering and construction engineering. Sand is generally divided into two categories: natural sand and artificial sand. Natural sand is mainly formed by rock weathering under natural conditions, while artificial sand is mainly formed by workers crushing rocks, but the cost of artificial sand is too high and there are many powders, so it is generally not suitable to be used.

Sand has a wide range of uses: in addition to the above-mentioned use for building houses, repairing roads, breeding and landscaping, it can also be used as a smelting agent and a sandbag for boxing. In everyday life it also plays a cleaning role:

For example, workers can use sand to clean wine bottles, metal utensils, etc. Sand is also used for porcelain and cooking. If there is organic oil on the ground, sprinkle a handful of sand and clean it up immediately.

The sand is made by the forces of nature over thousands of years, and is extremely fine and soft, making it suitable for some soft products. Although there are not many types of sand and the appearance is coarse, it is still very powerful for us.

Introduction: Although sand is very beneficial to human life, it also brings some effects, such as sandstorms, mudslides and so on. We should also take into account the environment while making rational use of it.

After the weathering of the rock, it is carried by the transportation of wind or water current, the small mass is taken away and deposited to form the soil - plain, the medium mass is taken away when the wind speed or flow rate decreases and the sediment is deposited to form a beach (the soil is carried farther when the carrier speed drops lower, and the gravel is deposited in advance), and the large mass remains in place and continues to be weathered. In the end, it turned into soil, and that's how the soil on Earth is now formed. Of course, there are also phenomena of magma eruptions forming rocks, although there are far fewer volcanoes today than in ancient times.

The sand used now is brought from the sand field, where the sand gathers.

The main component of sand is silica.