The earth has a history of 4.6 billion years. In such a long period of time, the geological structure and environment of the earth have been changing. The earth’s landform tens of millions of years ago is bound to be different from that of now. In tens of millions of years, the earth’s landform will be different from that of now. Where there was water, it may become land. For example, Shanxi is a big coal province now A long time ago, Shanxi was a land of huge forests. Later, the geological movement took place, and all the trees turned underground to form the present coal.
71% of the earth’s area is the ocean, and there are some fresh water lakes. The largest lake in China is Qinghai Lake, covering an area of 4583 square meters, but the deepest lake is only 32.8 meters. The deepest lake in the world is 50 times deeper than Qinghai Lake, and this lake is Baikal lake.
Lake Baikal is the largest freshwater lake in Asia and Europe, and also the deepest lake in the world, with a total length of 636 km and the deepest depth of 1637 m, covering an area of 31722 square kilometers. Its water content is about 23 billion tons, accounting for 20% of the total water content of freshwater lakes in the world. The comparison between Qinghai Lake and Baikal Lake is the difference between elephant and monkey. However, through research, scientists found that Lake Baikal is growing rapidly. In the future, it may form a freshwater ocean, which may divide the Eurasian continent in two in 20 million years.
Why does this happen? Scientists say that in terms of the history of Lake Baikal’s formation, about 70 million years ago, a crack appeared in the central area of Eurasia due to the interaction between the Eurasian plate and the Indian plate, which was formed by strong earthquakes after the collision between plates. Scientists call this area with ancient cracks the Lake Baikal rift zone. Later, with the frequent occurrence of earthquakes, the cracks will grow longer and bigger, and finally Lake Baikal was formed 25 million years ago.
Later, as the little ice age passed, the earth’s temperature continued to rise, resulting in the melting of ice and snow. A large amount of melted water flowed into the crack, and finally Lake Baikal was formed. The crack formed after the collision of the plates was deep and bottomless, so Lake Baikal was also deep and bottomless, which naturally formed the deepest lake in the world.
In 2017, geologists surveyed the area around Lake Baikal again, and found that the mountains around Lake Baikal are rising at the rate of 5-6 mm per year, and the lakeshore is also rising at the rate of about 2 mm per year, while the earthquake prone depression near Lake Baikal is declining at the rate of 4 mm per year. This means that the lake is expanding further.
As long as there are no major unexpected changes in the earth, Lake Baikal will continue to expand slowly, gradually becoming the first freshwater ocean in the world, and will completely divide the Eurasian continent into two in 20 million years.
However, there is no absolute thing in the world. Some people think that no one can be sure what will happen in the future in terms of the earth’s geology. In 20 million years, the earth’s geological environment cannot remain unchanged. Once great changes occur, no one knows what the future development of Lake Baikal will be. Maybe it is possible that Lake Baikal will become a dry lake in tens of millions of years.
However, with the rapid development of human science and technology, the destruction of the earth’s environment is becoming more and more serious. The greenhouse effect leads to the rising global temperature, and the ice and snow in the north and south poles will melt slowly. In the future, the earth’s land area may be less and less, and the ocean area will be larger and larger. Human beings can only build marine cities to live in the ocean. It is also possible that in 20 million years, human science and technology will be improved It’s very developed, and it’s very easy to immigrate to other planets. Guys, what do you think Lake Baikal will be like after 20 million? Welcome to comment below.