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. 2020 May 29;6(22):eaaz3053. doi: 10.1126/sciadv.aaz3053

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Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).

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Fig. 5 — Manganese is strongly enriched in the transitional unit that is interpreted as sediment deposited in the immediate wake of the impact (15). Elevated concentrations of Mn were measured in samples beyond 2.1 Ma after the impact, based on correlated micropaleontologic data (26). Aluminum concentrations in these samples are shown as proxies for suevite components, suggesting the Mn anomalies in the transitional unit and the lowermost postimpact sediments are not correlated with reworked impactite debris.