How about dinosaur dung? vs geochemical vs terrestial sources of hydrocarbons?
Do those claiming a finite supply of hydrocarbons in the world use that claim as a basis of slowing their use or increasing their use... i've lost track?
one could say france had "energy policy" right, but they have a pretty active chemical industry like most of europe.. one that's always been pressed for feestocks..
always interesting to think that mother earth has been producing and trapping hydrocarbons from the beginning, a little of this way, a little of that, a little of a lot here, a little or a lot there..
EXAMPLE
Molecular geochemical evidence for the origin of natural gas from dissolved hydrocarbon in Ordovician formation waters in central Ordos Basin
Li Xianqing, Hou Dujie, Tang Youjun, Hu Guoyi and Xiong Bo
Having studied the biomarker composition and maturity of dissolved hydrocarbons from Ordovician formation waters, the authors presented molecular geochemical evidence for the controversial origin of natural gases in central Ordos Basin. The dissolved hydrocarbons in Well Shan 12 and Well Shan 78 are relatively high in abundance of tricylic terpane, pregnane series and dibenzothiophene series and low in Pr/Ph (< 2) and hopane/sterane ratios, indicating the source input of marine carbonates. In contrast, the dissolved hydrocarbons in Well Shan 81 are free from tricyclic terpane and pregnane series, with trace dibenzothiophene series and high Pr/ Ph (3.27) and higher hopane/sterane ratios, which are the typical features of terrestrial organic matter. Furthermore, Well Shan 37 and Well Shan 34 are between the two situations, having a mixed source of marine carbonate and terrestrial organic matter. The maturity of biomarkers also supports the above suggestions. These results are consistent with the geological background and source rock distribution in this region.