Origin of oil.

Best answer: After a large number of plants and animals die, the organic substances that make up their bodies are decomposed continuously, and mixed with sediment or carbonate sediment to form sediment. Due to the continuous accumulation and thickening of sediments, the temperature and pressure rise. With the continuous progress of this process, the sediments become sedimentary rocks, and then form sedimentary basins, and then gradually form oil after long compression and heating.

After a large number of plants and animals die, the organic substances that make up their bodies are decomposed continuously, and they are mixed with sediment or carbonate sediment to form sediment. Due to the continuous accumulation and thickening of sediments, the temperature and pressure rise. With the continuous progress of this process, the sediments become sedimentary rocks, and then form sedimentary basins, and then gradually form oil after long compression and heating.

oil:

Petroleum refers to the mixture of gaseous, liquid and solid hydrocarbons with natural occurrence. Oil is divided into crude oil, natural gas, natural gas liquid and natural tar, but it is still used as the definition of crude oil.

Petroleum is a viscous, dark brown liquid, which is called industrial blood. Oil is stored in some parts of the upper crust. The main component is a mixture of various alkanes, cycloalkanes and aromatic hydrocarbons. Is one of the main objects of geological exploration.

The oil-forming mechanism of petroleum includes two theories, namely, bio-sedimentary oil-changing and petrochemical oil-changing. The former is widely accepted, which holds that petroleum was formed by the long evolution of organisms in ancient oceans or lakes, and belongs to bio-sedimentary oil-changing and cannot be regenerated. The latter thinks that oil is generated by carbon in the earth’s crust, which is irrelevant to biology and renewable. Petroleum is mainly used as fuel oil and gasoline, and is also the raw material of many chemical industrial products, such as solutions, fertilizers, pesticides and plastics.

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