The so-called magma sac refers to the area filled with magma under the volcano, which is the place where magma is relatively rich in the crust or upper mantle rock medium. To put it bluntly, it's like a big oil bubble, except that it's filled with lava instead of oil.

Each volcano has such a magma sac underneath, which stores the "ammunition" of volcanic eruptions, and the power of a volcanic eruption is directly related to the size and pressure of the magma sac underneath.

For example, the magma sac at the bottom of the Yellowstone volcano complex in the United States is 70 kilometers in diameter and 10 kilometers thick, and it contains more than 700 cubic kilometers of hot magma. Even this magma sac under the Yellowstone volcano has long become a concern for geologists from all over the world, because once the Yellowstone volcano erupts, the spewed material is enough to exceed 1,000 cubic kilometers, enough to plunge half of the world into a climate similar to a nuclear winter.

Volcanic eruptions are not only about lava, but also about many other substances.

And how big is this magma sac beneath the Great Tamu volcano? Tang Feng didn't even dare to measure it, anyway, once this magma sac completely erupted, it would not be a matter of nuclear winter, it would be a terrifying killer that could directly kill at least a quarter of the creatures on the earth, and over time, the damage caused would be even greater

Now this terrifying killer is revealing its original face because of Tang Feng's impulsiveness.

Tang Feng, who single-handedly caused this situation, was really anxious and angry, but there was no good way, if he didn't block this big guy. Then Tang Feng has really become a sinner through the ages!

Tang Feng has a big heart, which is innate. When this guy encounters something, the more anxious he is, the more stable he is. Although the situation in front of me is already on fire. The thief went to the wall, the child lay on the edge of the well, and a few of them were in the realm of the four major emergencies on the forcing state, but Tang Feng's heart gradually stabilized, because he suddenly thought of a direction to solve this problem.

The reason why the magma sac is called magma sac is actually very clear from the name. That is, it is in the form of a sac, which is enriched with relatively circulating hydrothermal fluid.

So. The magma in the magma sac actually flows with the molten material in the mantle, otherwise the magma in the magma sac would not remain melted. It had long since cooled down into a lump of rock.

Well, since it is connected to the mantle, it means that the magma sac has a passage to the bottom

Tang Feng looked down along the scope of the star core survey, and sure enough. Beneath this magma sac that is not known how many kilometers thick. Hundreds of red magma channels have poked the relatively hard upper mantle rock layers into a sieve.

In fact, the lithosphere of the earth is not only the crust of the light finger, but also the relatively hard lithosphere at the top of the upper mantle, and the combination of this lithosphere and the earth's crust is the entire lithosphere of the earth. Below the lithosphere, there is the asthenosphere that produces magma, that is, the layer of mantle with a depth of 80~400 kilometers, and this asthenosphere is the main source of magma.

Right now. There is still a lithosphere more than ten kilometers thick between the magma sac at the bottom of the Great Tamu volcano and the asthenosphere. Hundreds of magma channels of different sizes have carved open the lithosphere more than ten kilometers thick, forming hundreds of channels for transporting magma.

Some of these channels are responsible for the continuous transport of magmatic material from the asthenosphere into this huge magma sac, while the other part is responsible for the continuous transportation of material from the asthenosphere of the mantle.

It is this rhythm of inward and outward transport, combined with the geological stability of the surrounding lithosphere, that allows this huge magma sac to maintain a very delicate balance of pressure. But even if the pressure balance is maintained, the pressure in this magma sac is actually huge and incredible, but this delicate balance confuses everyone's eyes, including Tang Feng.

To reduce the pressure in the magma sac, it is only necessary to block up some of the passages that carry the magma material inside.

The pressure in the hundreds of magma channels is undoubtedly much smaller than the huge pressure in the magma sacs, and these magma channels are only a few kilometers thick and only a few hundred meters in diameter, and the most important thing is that the magma channels at the bottom are long enough, which provides a very good prerequisite for closing these magma channels.

However, it is definitely not an easy task to close a part of the magma channel. Because the rock layer between the magma sac and the asthenosphere below has almost become a sieve, and the geological structure is definitely not as stable as the layer of rock that is only three kilometers thick in the upper part of the magma sac, so these channels cannot be directly closed, otherwise it is estimated that the rock structure here will be destroyed before the channel is closed, and then the most likely result is that the entire lithosphere of this layer will collapse, and then the magma sac and the asthenium below will merge directly into one

This situation is absolutely catastrophic, if that happens, unless the star core reaches the fifth level, there is probably no way in this world to stop the full-scale eruption of the Great Tamu Volcano.

Therefore, in order to close these magma channels, it is necessary to mobilize enough rocks from the outside, use the external rocks and the high temperature and high pressure environment here to melt these rocks, and then mobilize a large number of rocks to continue to block, so that if the continuous blockade continues, it will slowly block part of the magma channels, so as to achieve the purpose of reducing the internal pressure of the magma sac.

At this time, Tang Feng felt that his previous approach to opening the way for the Great Tamu Volcano was very stupid. Forced, originally wanted to tune. Drama the nerves of various countries, but it turned out to be such a non-ending situation, and in the end you have to be stupid. Forcefully use the energy storage of the star core to wipe his belly

If I knew this, I wouldn't have moved the Great Tamu Volcano in the first place, and I would have done some submarine earthquakes or something, so as to cover up the disappearance of the two sea mud rare earth mines in the past. It's good that a hole has been opened for the Great Tamu Volcano, but it has to be painstakingly plugged again.

Is this the legendary lifting of a stone to shoot oneself in the foot?

Even though I feel stupid. Forced, it's just stupid. The typical performance of patients with advanced cancer, but Tang Feng also had to frantically plug the mouth. But fortunately, the method that Tang Feng came up with is not bad, at least there are a few magma passages that have been slowly blocked under this method.

It's just that the energy storage of the star core consumes a direct pump that makes Tang Feng feel distressed (to be continued.) )