When was the wild age?
The great flood refers to the early state after the formation of the earth. Five billion years ago (the formation of the solar system), the crust was very thin and the temperature was extremely high. The orogeny triggered floods. The original meaning of the word flood refers to the early floods on the earth.
There are at least three floods on the earth, and Dayu's flood control is the latest one, about 4000 years ago. Dayu's harnessing water and setting Kyushu is the earliest example of transforming nature in human history.
The original meaning of famine is the ignorance of vegetation, which refers to the ancient times, at least 5 million years before human beings appeared, when the earth was still in a state of chaos and ignorance.
The ancients said: the heavens and the earth are mysterious and the universe is vast. It means that heaven and earth were in a chaotic state at first, just like a mysterious and turbid gas. Later, space and time gradually emerged, and different elements emerged through evolution and existed independently of each other. The boundaries between liquid and solid in the world are clear and desolate.
Extended data:
Formation and evolution of flood era
Compared with the sun, the atmosphere is mostly depleted of hydrogen, nitrogen and inert gases such as argon, neon and xenon. On the contemporary earth, the neon-silicon ratio is only11kloc-0/0 of the sun. Therefore, it is obvious that the earth's atmosphere does not completely come from the gas part of the solar nebula. The early atmosphere of the earth is usually considered to be composed of methane, with a small amount of hydrogen, ammonia and water.
This assumption is mainly based on the inferred composition of Jupiter and other planetary atmospheres. However, the temperature of these planets may be much lower than that of the earth when they rise, so they cannot be used as models of the early atmosphere of the earth. If the earth starts to increase from a microsatellite at around 600K, it is conceivable that an atmosphere will appear after the increase.
It is generally believed that the atmosphere and hydrosphere (ocean) are formed by substances released by volcanic activities. However, the earth may also contain a small amount of water during its growth, because water condenses from the solar nebula at a temperature of about 350K, and the source of the earth's water and atmosphere may be the asteroid belt. Carbonaceous chondrites contain a lot of water and other volatiles in the earth's atmosphere, which is an obvious evidence.
The asteroid belt used to contain much more matter than modern times, and many of these substances have disappeared because of collisions with other planets. Many craters on Mercury, Moon, Mars and Venus show that they are all strongly bombarded by meteorites that may mainly come from the asteroid belt. The earth must have been bombarded so strongly in the early days.
Carbonaceous chondrites contain 10% water, while 0.5% of the materials on the earth may be composed of carbonaceous chondrites from the asteroid belt. Part of the atmosphere and hydrosphere may be composed of materials released by these meteorites when they hit. Huge carbonaceous chondrites will release a lot of water vapor when they hit.
Some of them are preserved in the atmosphere, but most of them condense into water to form streams, rivers and lakes, and finally form primitive oceans. Nitrogen can also be released by heating during impact. Complex hydrocarbons in meteorites can be decomposed to produce simple hydrocarbons such as methane and ethane. They can also react with water to produce gases such as carbon monoxide, hydrogen, ethanol and ammonia.
Water is decomposed by ultraviolet radiation energy and discharged in the atmosphere, which will also cause the increase of hydrogen and oxygen. Some ammonia and methane can also come to the earth in a frozen state from fragments of meteorites or comets (comets may also be abundant in the early history of the earth), or from microsatellites formed near Jupiter or Saturn.
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