Fingerprinting the Cretaceous-Paleogene boundary impact with Zn

Index

Abstract

This paper presents zinc isotope data from Cretaceous-Paleogene (K-Pg) boundary sedimentary rock layers. The data show heavier Zn isotope compositions and lower Zn concentrations compared to surrounding rocks, the impact site carbonate platform, and most carbonaceous chondrites. The authors argue that these isotopic signatures are consistent with Zn volatilization during the K-Pg impact event, providing a novel isotopic fingerprint for this process.

Publisher

Nature Communications

Published On

Jul 05, 2021

Authors

Ryan Mathur, Brandon Mahan, Marissa Spencer, Linda Godfrey, Neil Landman, Matthew Garb, D. Graham Pearson, Sheng-Ao Liu, Francisca E. Oboh-Ikuenobe

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