Goderis, Steven ORCID: 0000-0002-6666-7153, Sato, Honami, Ferriere, Ludovic ORCID: 0000-0002-9082-6230, Schmitz, Birger, Burney, David, Kaskes, Pim ORCID: 0000-0002-2605-6366, Vellekoop, Johan ORCID: 0000-0001-6977-693X, Wittmann, Axel ORCID: 0000-0001-7572-0801, Schulz, Toni, Chernonozhkin, Stepan M., Claeys, Philippe ORCID: 0000-0002-4585-7687, de Graaff, Sietze J., Dehais, Thomas, de Winter, Niels J., Elfman, Mikael, Feignon, Jean-Guillaume, Ishikawa, Akira ORCID: 0000-0002-8938-0200, Koeberl, Christian, Kristiansson, Per, Neal, Clive R., Owens, Jeremy D., Schmieder, Martin, Sinnesael, Matthias ORCID: 0000-0003-0354-8250, Vanhaecke, Frank, Van Malderen, Stijn J. M., Bralower, Timothy J., Gulick, Sean P. S., Kring, David A., Lowery, Christopher M., Morgan, Joanna, V, Smit, Jan and Whalen, Michael T. (2021). Globally distributed iridium layer preserved within the Chicxulub impact structure. Sci. Adv., 7 (9). WASHINGTON: AMER ASSOC ADVANCEMENT SCIENCE. ISSN 2375-2548

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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.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Goderis, StevenUNSPECIFIEDorcid.org/0000-0002-6666-7153UNSPECIFIED
Sato, HonamiUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ferriere, LudovicUNSPECIFIEDorcid.org/0000-0002-9082-6230UNSPECIFIED
Schmitz, BirgerUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Burney, DavidUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kaskes, PimUNSPECIFIEDorcid.org/0000-0002-2605-6366UNSPECIFIED
Vellekoop, JohanUNSPECIFIEDorcid.org/0000-0001-6977-693XUNSPECIFIED
Wittmann, AxelUNSPECIFIEDorcid.org/0000-0001-7572-0801UNSPECIFIED
Schulz, ToniUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Chernonozhkin, Stepan M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Claeys, PhilippeUNSPECIFIEDorcid.org/0000-0002-4585-7687UNSPECIFIED
de Graaff, Sietze J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Dehais, ThomasUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
de Winter, Niels J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Elfman, MikaelUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Feignon, Jean-GuillaumeUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ishikawa, AkiraUNSPECIFIEDorcid.org/0000-0002-8938-0200UNSPECIFIED
Koeberl, ChristianUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kristiansson, PerUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Neal, Clive R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Owens, Jeremy D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schmieder, MartinUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sinnesael, MatthiasUNSPECIFIEDorcid.org/0000-0003-0354-8250UNSPECIFIED
Vanhaecke, FrankUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Van Malderen, Stijn J. M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bralower, Timothy J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gulick, Sean P. S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kring, David A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lowery, Christopher M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Morgan, Joanna, VUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Smit, JanUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Whalen, Michael T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-606349
DOI: 10.1126/sciadv.abe3647
Journal or Publication Title: Sci. Adv.
Volume: 7
Number: 9
Date: 2021
Publisher: AMER ASSOC ADVANCEMENT SCIENCE
Place of Publication: WASHINGTON
ISSN: 2375-2548
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
SIDEROPHILE ELEMENT SYSTEMATICS; PLATINUM-GROUP ELEMENTS; K-PG BOUNDARY; CHONDRITIC IMPACTOR; MASS EXTINCTION; LONAR CRATER; CONSTRAINTS; COMPONENT; PYRITE; EVENTMultiple languages
Multidisciplinary SciencesMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/60634

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