Li Siguang (1889101October 26th-1971April 29th), formerly known as Li Zhongmai, was born in Huanggang, Hubei, and was a Mongolian. Geologist, educator, musician, social activist, the founder of geomechanics in China, and one of the main leaders and founders of modern earth science and geological work in China;
In 2009, the first batch of outstanding scientists and founding fathers who made outstanding contributions to the development of new China after the founding of New China were elected as one of the 100 people who moved China since the founding of New China.
Li Siguang founded geomechanics, which made great contribution to the development of China petroleum industry.
In his early years, he made exquisite research on Odonata fossils and their stratigraphic stratification, put forward the existence of Quaternary glaciers in eastern China, established new concepts of geomechanics and tectonic system, established the concept of tectonic system, and founded geomechanics school.
It is pointed out that the three subsidence zones of the new Cathaysian tectonic system have broad prospects for oil exploration, and a way to predict earthquakes by combining active tectonic research with in-situ stress observation is created.
Extended data:
Mongolian descent:
Mongolians have a very strong national color and culture since ancient times. According to legend, the history of Mongols is very long, reaching more than 3,000 years, and the history recorded in literature alone reaches 1000 years.
At the earliest time, our country once had the name of a nation, which was Tatar. Some scholars have suggested that this title is the name of the pre-Mongols. Scholars believe that Tatar is the predecessor of Mongols, but some scholars disagree with another name-Tiele is the predecessor of Mongols.
But the difference is that in Mongolia, many experts hold the same opinion. They think that the earliest Xiongnu evolved into later Mongolia.
As early as 200 BC, Donghu was conquered by Xiongnu leaders and their subordinates. Since then, East Lake has been ruled by Huns for three centuries.
Later, at the end of the first century BC and the beginning of the second century BC, the rule of the Xiongnu finally came to an end, because the Xiongnu tribe was attacked by the Han Dynasty. The earliest inhabitants of East Lake were Xianbei people, who moved to other places after the Xiongnu rule. The Huns who ruled here claimed to be Xianbei people, so the Xianbei tribe gradually flourished.
As early as the 4th century AD, some Xianbei people living in other places changed their names to "Qidan", and Xianbei people living in another area near Xing 'an Mountains also changed their names, namely Shiwei. According to historical records, Mongols are a small part of Shiwei people, which was recorded as early as the Tang Dynasty and has always been called Wumeng Shiwei tribe.
According to historical records, there were only two clans in the earliest Mongolian period, namely, Nigus and Qiuyan. The two tribes were defeated by the Turks respectively, and finally only two pairs of men and women remained in the whole tribe. They fled together and found a place to live for more than 400 years. During these 400 years, the tribe gradually prospered.
Because there has been no migration for more than 400 years, with the increasing population, there is no more place to live, so we have to start migration. At this time, this big tribe has formed about 70 branches. These 70 branches have a famous name, that is, the Dileqin Mongolian tribe.
After the migration, many excellent Mongolians appeared in the tribe, as well as many native Mongolians.
In the later period, there have been three very powerful tribes in Mongolia, namely Turkic, Naiman and Wanggu. These three tribes were also the earliest Mongolians. We are all familiar with Genghis Khan. Genghis Khan began to unify the Mongols in the13rd century. After Genghis Khan ruled, Mongolians began to be divided according to the system.
Mongolians began to have differences, and ethnic and regional differences caused differences among these tribes. These tribes with different styles together formed the whole Mongolia, and finally formed a unified nation with the same language and goal in the same area under the rule, which was later Mongolia.
References:
Baidu Encyclopedia-Li Siguang