ArticleScience advances2021
Globally distributed iridium layer preserved within the Chicxulub impact structure.
Article in Science advances, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
What it found
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Who cites it
8 citing papers in PubMed.
- Volcanic forcing of global climate cooling at the Younger Dryas onset preserved in North American sediments.Science advances · 2026Article
- Article
- A long-lived impact-generated hydrothermal system at the Chicxulub impact structure.Communications earth & environment · 2026Article
- ProlongedNature communications · 2025Article
- Reduced contribution of sulfur to the mass extinction associated with the Chicxulub impact event.Nature communications · 2025Article
- Hot carbonates deep within the Chicxulub impact structure.PNAS nexus · 2024Article
- Life before impact in the Chicxulub area: unique marine ichnological signatures preserved in crater suevite.Scientific reports · 2022Article
- Impact and habitability scenarios for early Mars revisited based on a 4.45-Ga shocked zircon in regolith breccia.Science advances · 2022Article
Corrections and comments
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Authors and funding
33 authors.
Funding
No grant is acknowledged in the PubMed record.
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.
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Registered trials
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