Biomarkers of photosynthetic sulfur bacteria in Lower Cretaceous crude oils, East Brazilian marginal basin

Bruno Q. Araújo,Vinícius B. Pereira,Francisco R. Aquino Neto,Débora A. Azevedo

Organic Geochemistry（2020）

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摘要

•GC × GC–TOFMS analysis used to characterize aryl isoprenoids and diagenetic carotenoids.•Application of high temperature GC × GC for structured resolution of biomarkers.•Isorenieratane, chlorobactane and diagenetic derivatives found in Cretaceous crude oils.•Photic zone euxinia (PZE) occurred in rifted South Atlantic marginal basins.•Molecular geochemical indicators of green sulfur bacteria revealed by GC × GC–TOFMS.

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关键词

2,3,6-trimethylaryl isoprenoids,Diagenetic aromatic carotenoids,Biphenyl atropisomers,Sulfur bacteria,Photic zone euxinia,Cretaceous crude oils,GC × GC−TOFMS

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