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. 2021 Sep 2;8:231. doi: 10.1038/s41597-021-01013-7

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© The Author(s) 2021, corrected publication 2022

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Fig. 1 — Tephrostratigraphy of the DEEP site. Lithology of the upper 450 meter composite depth (mcd) of the DEEP site from Lake Ohrid and the position of tephra layers (black bars) along with the Marine Isotope Stages (MIS, numbers of glacials given only) boundaries of Lisiecki and Raymo⁵⁹ and the Total Inorganic Carbon (TIC) content vs. age of the DEEP site sediments². High TIC contents correlate with interglacials, thus illustrating the climatostratigraphic position of tephra layers²¹. The volcanic source and equivalent eruption of tephra layers are given as published in^{2,14,20,22,23,30,60}. For new tephra layers (in bold italics) the supposed volcanic origin is given according to the CaO/FeO vs. Cl diagram by Giaccio, et al.⁶¹. Tephra layers with an * represent cryptotephra. The different colors used for labelling the tephra layers correspond to their different volcanic origins. Campanian Volcanic Zone (CVZ) according to Rolandi, et al.⁶². Masseria del Monte Tuff (MdMT) according to Albert, et al.⁶³. CI = Campanian Ignimbrite.