Science Advances

Supplementary Materials

The PDF file includes:

  • Fig. S1. Area seabed photographs at Lomvi and Lunde pockmarks.
  • Fig. S2. Scanned images of archive half sections and description of core GeoB21616-1.
  • Fig. S3. Scanned images of archive half sections and description of core GeoB21637-1.
  • Fig. S4. Scans of cut slabs from seabed carbonates with detailed U-Th sample locations and ages (ka BP ± 2σ).
  • Fig. S5. Scans of thin-section slabs impregnated in epoxy resin with detailed U-Th sample locations and ages in ka BP ± 2σ.
  • Fig. S6. Scans of thin-section slabs impregnated in epoxy resin with detailed U-Th sample locations and ages in ka BP ± 2σ.
  • Fig. S7. Thin-section micrographs of seabed samples.
  • Fig. S8. Thin-section micrographs of core samples (all cross-polarized light; pore space appears black).
  • Fig. S9. Range of (230Th/232Th) versus (238U/232Th) from this study compared to other seep carbonate literature.
  • Fig. S10. Calculated U-Th ages without dates excluded based on screening criteria plotted against sampling depth.
  • Fig. S11. Seep carbonate ages and respective relative sea level.
  • Fig. S12. Cross plots of carbonate carbon and oxygen stable isotope compositions (in ‰ VPDB).
  • Fig. S13. Breakdown of the uncertainty budget of calculated seep carbonate ages.
  • Fig. S14. Alternative interpretation of U-Th data.
  • Table S1. Mineralogical compositions (weight %) of seabed sampled carbonates.
  • Table S2. Mineralogical compositions (weight %) of core carbonates.
  • Legend for data file S1
  • References (5557)

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Other Supplementary Material for this manuscript includes the following:

  • Data file S1 (Microsoft Excel format). Spreadsheet containing U-Th isotopic data of seep carbonates and seep carbonate-free sediment, as well as calculated U-Th ages and carbonate δ13C and δ18O values.

Files in this Data Supplement: