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. 2018 Jul 23;9:2877. doi: 10.1038/s41467-018-05104-9

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© The Author(s) 2018

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 1 — Os_i values (in blue) and ¹⁹²Os concentrations (in red) for the analyzed middle Eocene sediments from the three different sites. a ODP Site 959; b ODP Site 1263; c IODP Site U1333. The MECO interval is defined based on TEX₈₆ values for Site 959 (in black; Cramwinckel et al.¹³) and bulk carbonate stable oxygen isotope ratios (δ¹⁸O) for Site 1263 (in black; Bohaty et al.¹⁰). The MECO is characterized by low carbonate content at Site U1333 (in grey; Westerhold et al.⁸⁴). The error bars indicate fully propagated analytical uncertainties (2σ)