Author/Authors :
Tian، نويسنده , , Hui and Cheng، نويسنده , , Peng and Zhou، نويسنده , , Qin and Xiao، نويسنده , , Xianming and Wilkins، نويسنده , , Ronald W.T.، نويسنده ,
Abstract :
A complete series of C32–C35 benzohopanes and corresponding C31–C34 25-norbenzohopanes were tentatively identified in Devonian and Jurassic bitumen sands from the northwestern Sichuan Basin in southwestern China. Although other origins cannot be excluded, the relative distributions of C32–C35 benzohopanes and C31–C34 25-norbenzohopanes, along with other biomarker parameters, suggest that the 25-norbenzohopanes formed by demethylation of the corresponding benzohopanes.
