Conditions for Appearance of Life on Earth 93 



carbons (ethane, propane, butane, and others), and, therefore, cannot be con- 

 sidered as a primary source of the formation of petroleum. 



Thus, the available data reveal the insolvency of different variants of the 

 organic (biogenic) hypothesis, and favour the hypothesis of abyssal inorganic 

 origin of petroleum and gas not connected, however, with magmas. 



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