Fig. 3: IODP Expedition 396 borehole information showing the late Palaeocene and early PETM fill (lithostratigraphic units IV and V).
From: Shallow-water hydrothermal venting linked to the Palaeocene–Eocene Thermal Maximum
From left to right, proximity to the centre of the HTVC decreases. The grey background delineates the Modgunn Vent infill. The ‘unconformity’ label indicates the unconformity that formed shortly after the vent; other unconformities are indicated by wiggly lines. The δ13C measurements were carried out on total organic carbon (δ13Corg). Red dots indicate the onset of the PETM CIE dominated by marine organic matter, and yellow dots indicate the PETM CIE with organic material largely derived from terrestrial sources. Biostratigraphic dating is discussed in the text and the electronic supplement. mbsf, metres below seafloor according to IODP’s C-SFA definition; LO, last occurrence; FO, first occurrence.
