What is the difference between the mud on the seabed and the ordinary thin mud?

The deepest Mariana Trench.

Sediment is also present. It's just that these compositions differ from the mud near the land. Only the diameter, content, pore system, etc. of the sand can be distinguished.

Even the exterior is muddy. In an open space, the internal and external pressures of an object are balanced. Underwater water does not exceed the compression capacity of the substance, so the mud can remain unchanged under water.

We can see in some documentaries that there are always fish hiding in the sand on the bottom of the sea, and they want to hide themselves waiting to hunt other small creatures, and the deeper the seabed, the fewer kinds of creatures. This is because of the ability of seabed organisms to withstand pressure.

It takes a certain level to survive. At a depth of more than 8000 meters, we can still see some fish. They are also alive because their bodies are relatively loose. The inside of the body is filled with fluid, which can maintain the same pressure as the outside. This relieves the internal pressure.

The deepest bottom of the trench**, but in fact, the soft mud that still exists at the bottom of the Mariana Trench, the only difference is the mineral particle size, water content of the sediments on this seabed.

Pore systems, etc., can be distinguished from terrestrial sediments. But the term ooze is largely the same. In a simple word, it's mud or mud!

This is because the internal and external pressures of an open object are balanced. Because as long as the water pressure does not exceed the compressive strength of the substance, the substance can basically retain its shape underwater. Of course, it is possible to calculate the degree to which the next cup will be deformed at the bottom of the Mariana Trench.

But one thing is certain, an open cup will not break!

The mud composition of the seabed is mainly silica.

Because of the compressive strength of its particles.

It is very high that seawater can penetrate around it, so the pressure on these particles is balanced. As long as this water pressure does not exceed the limit pressure of this particle, the mud will continue to exist on the seabed. Of course, the pressure on the seabed is not enough, but the pressure in the interior of the earth is enough.

Under extreme high pressure, the substance can change into another cardiac form, and the changes in other substances can be described.

If there is such a strong pressure on the seabed at 10,000 meters, will the seabed soil here be very dense? You know, every square centimeter of soil here bears tons of weight. If it is on the ground, this pressure can make the soil very strong.

But the situation at the bottom of the sea is completely different. According to scientists.

At a depth of 10,000 meters, the seafloor soil is very soft and not as hard as the ground. Many people seem to be unable to understand why the soil can be softened when the pressure on the seabed is so great at 10,000 meters. In this regard, scientists explain that the material that makes up the soil on the seabed is completely different from the ground.

It's more complicated. There are not only decomposition products from the decomposition of the debris after the death of living things, but also volcanic ash.

mineral deposition, cosmic dust, etc.

Ordinary soil is a complex mixture, and the composition of the soil varies from place to place, but the elements that make up these soils are nothing more than oxysilicon, calcium, aluminum, iron, etc., most of which exist in the form of silicates. And the soil on the bottom of the sea, which is closely combined with minerals, has a great effect.

The soil on the bottom of the sea is very soft and very fine after drying, which is not the case with ordinary thin mud, which will form lumps after drying.

The difference is quite big, the texture of the soil on the bottom of the sea is more delicate, and there are many rich minerals in it.

The difference in the middle can be distinguished by the content of the sand, the diameter of the thing. By observation, it can only be observed that the ground is harder due to the pressure, and the land in the sea is softer because the pressure is not so great.

There are still a lot of minerals in the soil in the sea, and there is a lot of salt, and it is difficult to mine, and many construction sites do not need it, and the scope of use is relatively small.

The sedimentation of seawater is divided into littal, shallow, semi-abyssal and abyssal sea. Because the sediment of the ocean has better sortability, that is, the larger the particle size of the sediment carried by the river entering the sea, the earlier the sediment will be deposited and the closer it will be to the coast. Therefore, the sedimentation of the coastal zone is often sand, and the seaside that you see is the coastal sediment.

The deeper the sea, the smaller the particle size of the mechanical sediments, so the mechanical sediments in the semi-abyssal and deep seas are basically muddy.

The production of oil on the seabed requires a strong material base, organic sludge. Organic silt is a mixture of sediment and the carcasses of living organisms that sink to the bottom of the sea. The continental shelf has a huge layer of organic silt, which is good for oil production, so it may be rich in oil.

Beyond the continental slope, there is a gentle continental base, which, although the water depth is more than 2,000 meters, deposits a large amount of sediment and biodetritus, and the sediment is up to 10 kilometers thick, making it an important sedimentary zone in the ocean. These huge sediments are accumulated in the oxygen-poor environment of the seabed, which is rich in organic matter, so it has good conditions for the formation of oil and gas, and it is also an oil and gas enrichment area.

Scientists have also found that many small ocean basins or marginal seas with water depths of up to 4.5 kilometres, such as the Gulf of Mexico, the Mediterranean, the South China Sea, the Sea of Japan, the Sea of Okhotsk and the deep-sea portions of Indonesian waters, are rich in oil resources.

Today, seabed oil is extracted mainly in the Gulf of Mexico, the Gulf of Venezuela, the Persian Gulf, the Gulf of Guinea, the Gulf of California, off the coast of Australia, off the coast of Brazil, and in the Bohai, East and South China Seas of China.