Fig. 3: Paleocene-Eocene Thermal Maximum (PETM) carbon isotope excursion (CIE) onset on the mid-Atlantic Coastal Plain.
From: Astrochronology of the Paleocene-Eocene Thermal Maximum on the Atlantic Coastal Plain
a Tuned δ13C values of the Howards Tract (HT) cores. b Tuned δ18O values of the HT cores. c Tuned calcium content generated from X-ray fluorescence (XRF) scans (gray line) and filtered precession (P) cycles (red line, detailed in Fig. 2h) of the HT cores. d δ13C values of the Mattawoman Creek-Billingsley Road (MCBR) cores in stratigraphic depth20. e δ13C values of the Wilson Lake core in stratigraphic depth. The data source for Wilson Lake: Cibicidoides spp. and bulk carbonate (Z06 denotes ref. 89); Anomalinoides acutus and Cibicidoides spp. (S12 denotes ref. 53); organic matter of dinocysts90.
