Fig. 2: New Aptian Pb isotopic profiles of silicate fractions from DSDP site 463 and a compilation of published and new δ13Ccarb and Os data.
From: Brief and intensive volcanic emissions from Ontong Java Nui heralded Oceanic Anoxic Event 1a
Lithology is based on ref. 16; biostratigraphy is based on refs. 13,19; δ13Ccarb data with chemostratigraphic segments (Ap1–Ap15) are based on refs. 13,17,19, and this study; and Os isotopic data are from this study and refs. 11,19. The interval of Globigerinelloides algerianus zone is slightly modified based on the newly acquired foraminiferal specimens (Supplementary Fig. S5). Here, according to depth information reported in ref. 16, the basal 10 cm of Core 70 overlaps with the underlying Core 71. To resolve the overlap, we adjusted the previously reported depths of Core 71, Sections 1 and 2 by adding +10 cm. Because there is a 10 cm core gap at the top of Core 71, Section 3, we used the previously reported core depths for the samples from lower than Core 71, Section 216. Abbreviations: mbsf meter, below seafloor, CIE carbon isotope excursion, OAE oceanic anoxic event, OJN Ontong Java Nui, BAR Barremian, kw/kr Kwaimbaita/Kroenke, sg Singgalo, G. Globigerinelloides, L. Leupoldina, trocoid. trocoidea, P. Paraticinella, M. Microhedbergella, minig. miniglobularis, reni. renilaevis, T. Ticinella.
