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Until recently, geologists and scientists believed that hydrocarbons (oil and natural gas) were formed only from living microorganisms that were compressed in the upper layers of the Earth's crust, and heated with high temperatures from the upper mantle. Now, a new research comes to show that it may be, indeed, possible that hydrocarbons be also formed in the upper mantle, as some scientists have proposed. The mantle stretches from underneath the crust to the planet's super-hot core. Its upper part was demonstrated to exhibit all the conditions required for the formation of deep oil and gas deposits.The reason why the debate as to whether this is possible or not lasted for so long is the fact that oil as we know it is entirely made up of organic material, as in remnants of large amounts of microorganisms. If hydrocarbons form in the mantle, then this means that no organic material can be found in it. The recent study, conducted by scientists from the Carnegie Institution's !
Geophysical Laboratory, working together with colleagues from Russia and Sweden, proved that ethane and heavier hydrocarbons could be synthesized at great depths, under the correct pressure-temperature ratio.“We were intrigued by previous experiments and theoretical predictions. Experiments reported some ...
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http://news.softpedia.com/news/Hydrocarbons-Can-Form-in-the-Upper-Mantle-117603.shtml
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