Chapter 279

Lei Wenjun got off the plane near the cave, so when he recovered his spirit, they didn't spend much time in the cave.

After arriving at the cave, Lei Wenjun first asked his assistant to debug the equipment at the edge of the pit to prepare for the survey later.

The debugging process is not simple. It is not easy to fix the instrument or calculate the irradiation angle.

He himself took advantage of this gap to the inner side of the cave entrance and carefully studied the rocks near the entrance.

He first touched the surface of the gravel with his hand.

This ordinary person can only jump out of the rock wall of "no crack" after looking at it for a long time. In Lei Wenjun's eyes, it is a sample that can provide a lot of information.

This is the difference between insiders and laymen. It is like an old driver who can make a small film with less than ten letters and numbers.

Then Lei Wenjun picked up a small tungsten steel sand drill and dug into the non bearing part of a rock wall.

Kaka, Kaka——

The drilling process lasted more than two minutes, and the drill bit penetrated about 20 cm.

Then Lei Wenjun put down the equipment and replaced it with a set of precision probes.

Five minutes later.

Lei Wenjun stood up and said to Lin Ziming:

"Colonel Lin, the SPT blow count is about 50, the rock wall structure is very clear, and the core has no obvious signs of fracture, which belongs to standard medium weathering."

Lin Ziming quickly asked:

"Moderately weathered? Is there a specific year reference?"

Lei Wenjun thought for a moment and pointed to a lady outside the cave who was being blown by the breeze

"Although the arc-shaped top of this cave is a typical tuyere structure, the position of the cave is inclined to the side of the positive wind direction, and the wind will not be particularly strong.

So combining these judgments

The cave began to show signs of weathering almost 60 years ago. "

"More than 60 years?"

Hearing this figure, Lin Ziming and old Wei looked at each other and thought:

"Mr. Wei, it seems that your guess should be correct."

According to the family tree of Mo family.

Mo shaonan was born more than 270 years ago. When he was 17, he was taken away by Mo Peidong. When he was nearly 90, Yunyou disappeared.

Therefore, the year of his disappearance was about 180 years ago.

This year is about 30 years different from the C14 result made by Wang Jun and his team. Therefore, Mo shaonan probably spent about 30 years in the secret room.

Although the lost third ancestor of the Mo family, there are still a lot of unsolved problems in the cause of death.

For example, practitioners on the fifth floor of jiedan territory can theoretically live for more than 200 years. They should not sit down naturally so early.

But these are all things that happen in specific nodes and have nothing to do with the timeline - for example, we don't know the psychology of a dying Han traitor taking selfie every time he goes to the toilet, but we can know how many disgusting things he has done in the past four years.

According to the previous guess of Old Wei's family owner.

The third-order cloud hidden rune is ineffective when no one has input Reiki or provided Reiki for a long time, resulting in the exposure of the cave.

Lei Wenjun's test results basically have a data support for this guess.

Then Lei Wenjun took samples at many locations of the cave and finally determined that the exposure year of the cave was in front of more than 60 people.

Although human identification may not be as accurate as mechanical analysis, there is a certain deviation in theory.

But no matter how big the error is, it can't be as exaggerated as a hundred years - after all, the surface weathering may behave differently for various reasons, but the core is not so easy to go wrong.

After confirming this information, Lei Wenjun followed Lin Ziming and others to the edge of the pit.

this moment.

A device similar to the dental comprehensive machine lying on when looking at teeth has been placed over the hole. Feng Yuhua, Lei Wenjun's assistant, is beating and calculating data on the keyboard with both hands.

There is a saying that this hand can be used to write novels at least 30000 words a day.

Come to the pit.

Seeing that the relevant equipment was still under commissioning, Lei Wenjun squatted down and observed the deep pit with the naked eye.

Lin Ziming looked at Lei Wenjun, half joking and half reminding:

"Lao Lei, be careful. There will be no people in this pit."

Lei Wenjun nodded and suddenly gave a light sigh.

Then the whole man climbed to the ground and leaned down with his right hand.

Click——

A stone forty or fifty centimeters deep in the pit was gently broken down by him.

Then Lei Wenjun took out his hand, looked at the stone, frowned and said:

"Something's wrong... This stone is different from the cave and the rocks in the cave. It's completely different."

Lin Ziming looked at him and asked:

"What do you say?"

Lei Wenjun first pointed to the opening and the top of the cave, pointing to standard brown rocks. He only listened to him:

"The rocks inside and at the entrance of the cave are common phyllite and basalt, with some gneiss on the outside - this is a common rock in both the native and the Da Mo world, and a conventional variety evolved due to oxygen content and planetary gravity."

Then he showed the stone in his hand to Lin Ziming, pointed to the bump on it and said:

"But this stone is different. It is a bit like ultrabasic intrusive rock.

Colonel Lin, do you see the grain like structure and massive structure on it?

This shows that its metal content is very high, either iron or magnesium.

I saw this area when I came here. It belongs to standard oblique scattered terrain, and there can be no metal veins. "

Lin Ziming looked at him thoughtfully:

"Director Lei, do you mean... Was it placed here? Or even artificial?"

Lei Wenjun was silent for a moment and shook his head:

"It's hard to say. It's only possible. After all, it's only a sample.

The great Mo world is mysterious and unpredictable. There may be any geological structure beyond our concept. "

Then he looked at his assistant Feng Yuhua and asked:

"Yuhua, is the rangefinder ready?"

Feng Yuhua nodded quickly and replied:

"Leisuo, the data and inclination have been debugged."

This time Lei Wenjun brought them an ultra far laser rangefinder, which is more than four times better than Lin Ziming's.

This rangefinder can be said to be the equipment measuring the farthest distance apart from astronomical equipment at present - the principle of astronomical equipment is completely different and can not be compared.

The positioning of this detector is actually ultra long distance detection under extreme conditions.

After all, Da Mo is different from the mainland. After the day, it is 168 hours of night. Without some powerful equipment, it is impossible to work normally in the field.

Even when the headquarters first prepared the machine, one of the possible uses considered was to "carry out depth detection of unknown pits".

After all, field exploration is difficult to return, but in fact, there are only those kinds of theoretical projects, which can be listed by exhaustive method.

According to the original design.

Under normal circumstances, this device can detect a range of 100 kilometers.

That is, it's almost a little shorter from Chongming Island to Songjiang.

Then Lin Ziming confirmed that the generator brought was enough to support the maximum power of the detector, and said to Lei Wenjun:

"Director Lei, let's start."

Lei Wenjun now stood at the main control console, nodded at the speech and said to Feng Yuhua:

"Yuhua, turn it on!"

Feng Yuhua's hands knocked out the residual shadow on the keyboard again, and said at least:

"The measured inclination is 7.29 °, the output power increases from 500 MW, the red text is pulled to the far left, start!"

Next second.

The laser rangefinder received the command and sent out a slight red light in an instant.

Whew——

As we all know, the speed of light is 299792.458 kilometers per second.

The irradiation distance of this equipment under the limit power is 100 km, that is to say, it takes less than a blink of an eye from sending out to reaching the limit of the laser.

However, what makes everyone cool behind is

After a few seconds, the screen is still blank.

In other words, the depth of the hole exceeds 80 kilometers, or 80000 meters.

Lei Wenjun stared at the screen closely. After a while, he suddenly said:

"Yuhua, prepare the rope. I'm going down the pit!"