The Summons Lab • Geobiology and Astrobiology at MIT

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  • Biomarkers
    • What is a biomarker?
    • Biomarkers as source indicators
      • Steranes, hopanes, etc.
      • Hydrocarbons
      • Environmental indicators
      • Indicators of euxinia
      • Literature cited
    • Experimental methods
      • Source rock
      • Extraction
      • Fractionation
      • GC-MS
      • Compound-specific isotopes
    • Biomarker classification
      • Lipids
        • Acetogenic lipids
        • Isoprenoids
          • Acyclic and cyclic isoprenoids
          • Polycyclic isoprenoids
            • Hopanoids
            • Steroids
            • Carotenoids
            • Squalene
      • Isotopes
        • Selected publications on using isotopes as biomarkers
      • Kerogen
      • Diagenesis and catagenesis
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    • Gas Chromatographs
      • Gas chromatography – mass spectrometry
      • High Resolution Mass Spectrometer
    • Liquid Chromatography
    • Isotope Ratio Mass Spectrometry
      • Compound-specific isotope analysis
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Roger Summons

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