TABLE 3.

GDGT abundance and composition in different MGP sediment layers

Sediment sampleDepth (cm)Conc (μg g−1)% of total GDGTa
GDGT IaGDGT IIIGDGT IVGDGT VIII
13GB02C0-10.663.012.44.620.1
13GB02C13-1416.543.617.214.324.9
25GB13B0-10.249.019.28.823.1
25GB13B13-140.676.814.82.55.9
27GB15C0-10.863.110.76.319.9
27GB15C12-1311.140.728.87.123.4
28GB16C0-10.861.013.24.321.5
28GB16C13-147.646.025.28.220.6
29GB18B0-10.368.819.92.29.9
29GB18B14-151.458.117.46.518.1
  • a The chemical nomenclature for GDGT carbon skeleton moities is based on the scheme described by Schouten et al. (53).