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(A) Age model of the PETM sequence in the New Jersey Coastal Plain (1, 2). (B) Comparison of the marine bulk carbonate and benthic foraminiferal isotope gradients (mean values), and the relation between total CIE values and the PETM paleodepth estimates of refs. 1 and 3. Note the difference between the bulk carbonate record and the benthic foraminiferal record, which mimics the surface ocean mixed layer CIE magnitude of 3.5–4‰.
