IMIS | Lifewatch regional portal

You are here


[ report an error in this record ]basket (0): add | show Print this page

Globally distributed iridium layer preserved within the Chicxulub impact structure
Goderis, S.; Sato, H.; Ferrière, L.; Schmitz, B.; Burney, D.; Kaskes, P.; Vellekoop, J.; Wittmann, A.; Schulz, T.; Chernonozhkin, S.M.; Claeys, P.; de Graaff, S.J.; Déhais, T.; De Winter, N.J.; Elfman, M.; Feignon, J.-G.; Ishikawa, A.; Koeberl, C.; Kristiansson, P.; Neal, C.R.; Owens, J.D.; Schmieder, M.; Sinnesael, M.; Vanhaecke, F.; Van Malderen, S.J.M.; Bralower, T.J.; Gulick, S.P.S.; Kring, D.A.; Lowery, C.M.; Morgan, J.V.; Smit, J.; Whalen, M.T.; IODP-ICDP Expedition 364 Scientists (2021). Globally distributed iridium layer preserved within the Chicxulub impact structure. Science Advances 7(9): eabe3647.
In: Science Advances. AAAS: New York. ISSN 2375-2548, more
Peer reviewed article  

Available in  Authors 

Authors  Top 
  • Goderis, S., more
  • Sato, H.
  • Ferrière, L.
  • Schmitz, B.
  • Burney, D.
  • Kaskes, P., more
  • Vellekoop, J., more
  • Wittmann, A.
  • Schulz, T.
  • Chernonozhkin, S.M., more
  • Claeys, P., more
  • de Graaff, S.J., more
  • Déhais, T., more
  • De Winter, N.J., more
  • Elfman, M.
  • Feignon, J.-G.
  • Ishikawa, A.
  • Koeberl, C.
  • Kristiansson, P.
  • Neal, C.R.
  • Owens, J.D.
  • Schmieder, M.
  • Sinnesael, M., more
  • Vanhaecke, F., more
  • Van Malderen, S.J.M., more
  • Bralower, T.J.
  • Gulick, S.P.S.
  • Kring, D.A.
  • Lowery, C.M.
  • Morgan, J.V.
  • Smit, J.
  • Whalen, M.T.
  • IODP-ICDP Expedition 364 Scientists

    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.

All data in the Integrated Marine Information System (IMIS) is subject to the VLIZ privacy policy Top | Authors