1. Globally distributed iridium layer preserved within the Chicxulub impact structure
- Author
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Goderis, Steven, Sato, Honami, Ferrière, Ludovic, Schmitz, Birger, Burney, David, Kaskes, Pim, Vellekoop, Johan, Wittmann, Axel, Schulz, Toni, Chernonozhkin, Stepan, Claeys, Philippe, de Graaff, Sietze, Déhais, Thomas, de Winter, Niels, Elfman, Mikael, Feignon, Jean-Guillaume, Ishikawa, Akira, Koeberl, Christian, Kristiansson, Per, Neal, Clive, Owens, Jeremy, Schmieder, Martin, Sinnesael, Matthias, Vanhaecke, Frank, Van Malderen, Stijn, Bralower, Timothy, Gulick, Sean, Kring, David, Lowery, Christopher, Morgan, Joanna, Smit, Jan, Whalen, Michael, Chenot, Elise, Christeson, Gail l., Cockell, Charles S., Gebhardt, Catalina, Goto, Kazuhisa, Green, Sophie L., Jones, Heather, LeBer, Erwan, Lofi, Johanna, IODP-ICDP Expedition 364 scientists,, Perez-Cruz, Ligia, Pickersgill, Annemarie E., Poelchau, Michael H., Rae, Auriol S.P., Rasmussen, Cornelia, Rebolledo-Vieyra, Mario, Riller, Ulrich, Tikoo-Schantz, Sonia M., Tomioka, Naotaka, Urrutia-Fucugauchi, Jaime, Xiao, Long, Yamaguchi, Kosei E., Stratigraphy and paleontology, Stratigraphy & paleontology, Natural Environment Research Council (NERC), Earth Sciences, Chemistry, Analytical, Environmental & Geo-Chemistry, Faculty of Sciences and Bioengineering Sciences, Institut de chimie et procédés pour l'énergie, l'environnement et la santé (ICPEES), Université de Strasbourg (UNISTRA)-Matériaux et nanosciences d'Alsace (FMNGE), Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Biological Psychology, Texts and Traditions, and Sociology and Social Gerontology
- Subjects
010504 meteorology & atmospheric sciences ,Cretaceous–Paleogene boundary ,010502 geochemistry & geophysics ,01 natural sciences ,Chicxulub crater ,Sedimentary depositional environment ,Paleontology ,Impact crater ,Iridium anomaly ,SDG 14 - Life Below Water ,Impact structure ,ComputingMilieux_MISCELLANEOUS ,Research Articles ,0105 earth and related environmental sciences ,Horizon (geology) ,Extinction event ,Multidisciplinary ,SciAdv r-articles ,Généralités ,Geology ,IODP-ICDP Expedition 364 Scientists ,K-Pg boundary ,Chemistry ,[SDU]Sciences of the Universe [physics] ,Hypervelocity ,mass extinction ,Research Article - Abstract
The Cretaceous-Paleogene (K-Pg) mass extinction is marked globally by elevated concentrations of iridium, emplaced by a hypervelocity impact event 66 million years ago. Here, we report new data from four independent laboratories that reveal a positive iridium anomaly within the peak-ring sequence of the Chicxulub impact structure, in drill core recovered by IODP-ICDP Expedition 364. The highest concentration of ultrafine meteoritic matter occurs in the post-impact sediments that cover the crater peak ring, just below the lowermost Danian pelagic limestone. Within years to decades after the impact event, this part of the Chicxulub impact basin returned to a relatively low-energy depositional environment, recording in unprecedented detail the recovery of life during the succeeding millennia. The iridium layer provides a key temporal horizon precisely linking Chicxulub to K-Pg boundary sections worldwide., SCOPUS: ar.j, info:eu-repo/semantics/published
- Published
- 2020
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