New claims, from US Researchers, of abiotic oil/gas.

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Look ma! No dead dinosaurs!

Abiotic Synthesis Of Methane: New Evidence Supports 19th-Century Idea On...

Their study is scheduled for Nov./Dec. issue of ACS’ Energy & Fuels, a bi-monthly publication. Anurag Sharma and colleagues note that the traditional process involves biology: Prehistoric plants died and changed into oil and gas while sandwiched between layers of rock in the hot, high-pressure environment deep below Earth’s surface. Some scientists, however, believe that oil and gas originated in other ways, including chemical reactions between carbon dioxide and hydrogen below Earth’ surface.

The results “strongly suggest” that some methane could form strictly from chemical reactions in a variety of chemical environments. This study further highlights the role of reaction pathways and fluid immiscibility in the extent of hydrocarbon formation at extreme conditions simulating deep subsurface.