Table 2.

Concentrations and δ-13C levels of archaeal and bacterial lipids and δ-13C levels of total organic carbon and carbonate of Eel-pc36

Depth interval (cm) Archaeolsn-2-HydroxyarchaeolCrocetane MAGE cis-ω7-16:1 δ-13C (‰) of total organic carbon δ-13C (‰) of CO32−
δ-13C (‰) Concn (μg/g) δ-13C (‰) Concn (μg/g)δ-13C (‰) Concn (μg/g)δ-13C (‰) Concn (μg/g)
0–3 −101.1 1.3 −105.23.8 NDa ND −76.7 1.00 −28.8 −18.0
3–6 −100.6 1.3 −105.8 2.7 −91.60.3 −77.6 1.16 −28.9 −24.0
6–9−102.6 1.5 −105.5 2.3ND ND −80.8 0.95−29.7 −32.5
9–12 −102.1 1.1 −105.7 1.0ND ND −86.5 1.03−28.5 −29.9
  • a ND, not determined.