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Degasification of the earth

LIAO Yong-yan(Fisheries College of Guangdong Ocean University,Zhanjiang 524025,China)  
Based on the constraints of the data of geology,geophysics,geochemistry,astrophysics,palaeoecology,we made research on degassing of the earth.The result shows: via the accretion,portion of cold matter of solar system formed the early earth.With the effect of that collision kinetic energy converted into heat energy,the surface of the early earth melted.On the condition of high temperature and high pressure,crystal water of the substance that composing the surface earth was released into the original atmosphere,and the carbonate,vitriol and halide decomposed,the carbon dioxide,sulfureted hydrogen,sulfur dioxide,hydrogen chloride,hydrogen fluoride were released into the atmosphere,too.All these gases composed the original atmosphere.With effect of geopotential and radiation energy,when the interior of the earth continued to melt,the surface of the earth solidified to form the original lithosphere.Afterward,except the surface original lithosphere,all the earth melted completely.The gases,such as the vapor and carbon dioxide that resulted from the melting of the interior substance of the earth,were enclosed by the lithosphere.Only when the glacier formation and melting,the epeirogenesis and the thalassogenesis occurred,then the volcano and earthquake occurred,these gases could be released out of the surface of the earth.These degassing is influenced by many factor,such as the melting condition of the interior of the earth,the position of the glacier formation(in ocean or in land),biotic evolvement,the intensity of the sunshine.
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