Li Siguang's contributions are as follows:

1. Li Siguang is one of the pioneers of Chinese geology. He founded geomechanics and made important contributions to the development of China's petroleum industry.

2. In the early years, he conducted exquisite research on the fossils of the family Nymphaeidae and their stratigraphic layering significance. The existence of Quaternary glaciers in eastern China was proposed. Using the mechanical point of view to study the movement of the earth's crust and the laws of mineral distribution, we established the concepts of new edge disciplines "geomechanics" and "tectonic system".

3. He has advocated throughout his life the study of the occurrence, development and combination of geological structures from a mechanical perspective. He believes that various structural traces are the result of geostress activities. He has established the concept of "tectonic system" and created the geological system. School of mechanics.

Extended information:

Anecdotes about Li Siguang

1. Origin of the name

Li Siguang was born in a poor family. Because Li Siguang was the second child, his father Li Zhuohou gave him a famous name: Li Zhongkui. In 1902, under the leadership of Zhang Zhidong, leader of the Westernization faction and governor of Huguang, Hubei began to build a large number of new primary and secondary schools. In addition to teaching students traditional classics, they also imparted scientific and technological knowledge.

The news soon spread to Huanggang, and Zhong Kui was eager to try. He came to Wuchang and filled out the registration form at the Hubei Provincial Academic Affairs Office. Maybe he was too nervous, so he mistakenly entered his age "fourteen" in the name column. After discovering the mistake, he was reluctant to spend money to buy another form because his family was poor. When he was having trouble, he looked up and saw the words "Four Forms of Light Quilt" on the horizontal plaque hanging in the middle of the hall in front of him.

Zhong Kui’s eyes lit up. He added a few strokes to the “ten” in the name column and wrote it as “Li”, and added the word “光” after the “four”. After making the changes, he said with satisfaction : "Four lights, all sides are bright, and the future is promising." From then on, he changed his name to Li Siguang.

2. Contribution to music

In addition to being a geologist, Li Siguang is also a music fan and composed China's earliest violin piece "The Road Is Difficult".

Ma Shengyun, a researcher at the Institute of Geomechanics of the Chinese Academy of Geological Sciences, said that Li Siguang fell in love with the violin when he was studying in the UK. Li Siguang studied hard in the UK for 7 years. Before returning to China in 1920, he wrote the violin piece "The Road Is Difficult". According to the research of the Modern Music Room of Shanghai Conservatory of Music, it is the earliest violin piece in China with music score as evidence.

Baidu Encyclopedia——Li Siguang