Fig. 2: Geochemical proxy records from the North Sea and Svalbard cores, showing volcanic and sedimentological changes associated with the Paleocene–Eocene Thermal Maximum (PETM). | Nature Communications

Fig. 2: Geochemical proxy records from the North Sea and Svalbard cores, showing volcanic and sedimentological changes associated with the Paleocene–Eocene Thermal Maximum (PETM).

From: Paleocene/Eocene carbon feedbacks triggered by volcanic activity

Fig. 2: Geochemical proxy records from the North Sea and Svalbard cores, showing volcanic and sedimentological changes associated with the Paleocene–Eocene Thermal Maximum (PETM).

Records are shown against depth in m core depth (below oil rig floor ‘Kelly bushing’ for 22/10a-4 and E-8X). a–d Well site 22/10a-4 (North Sea). e–g Well site E−8X (North Sea). h–i Core BH9/05 (Svalbard). Bulk sediment total organic carbon δ13CTOC is reported as ‰ VPDB, Vienna PeeDee Belemnite. Total organic carbon (TOC) is reported as % of the bulk weight. Hg is reported as parts per billion (ppb). Hg/TOC envelope reflects an analytical error, illustrating higher uncertainty in samples with lower TOC. The 22/10a-4 lithological (lith.) log, δ13CTOC, and TOC from are from (ref. 26). The BH9/05 δ13CTOC and age model are from (ref. 40), and Hg data are from (ref. 7). The position of the Paleocene/Eocene boundary, defined as the onset of the PETM, is shown as a horizontal dashed line.

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