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Disaster and Earth Science

Polycyclic isoprenoids

Polycyclic isoprenoids are divided into groups based on how many C10 units, or we say terpenoids their precursors possessed. Thus, for example, a triterpane had a precursor that had between 30 and 40 carbons.

>>Biomarker classification

>>>Lipids

>>>>Acetogenic lipids

>>>>Isoprenoids

>>>>Acyclic and cyclic isoprenoids

>>>>Polycyclic isoprenoids

>>>>Hopanoids

>>>>Steroids

>>>>Carotenoids

>>>>Squalene

>>>Kerogen

>>>Diagenesis and catagenesis

>>Biomarker as Source Indicator

>>>Steranes, hopanes etc

>>>Hydrocarbons

>>>Environmental Indicators

>>>Indicators of Euxinia

>>Experimental methods to extract biomarkers

>>>Source rock

>>>Extraction

>>>Fractionation

>>>GCMS