Prolonged 187Os/188Os excursion implies hydrothermal influence after the Chicxulub impact in the Gulf of Mexico
The Cretaceous/Paleogene boundary asteroid impact is recorded globally as a negative <sup>187</sup>Os/<sup>188</sup>Os excursion, including in sediments recovered from the IODP-ICDP drilling within the peak ring of the Chicxulub structure in the Gulf of Mexico. The reconstructed marine <sup>187</sup>Os/<sup>188</sup>Os curves can be used for global age correlations on the ~10 kyr scale. However, the versatility of Os isotope clock between the proximal and distal sites remains unclear. This paper presents <sup>187</sup>Os/<sup>188</sup>Os records from early Paleocene sediments deposited in the Chicxulub impact basin and Mexican sites with biochronological scales. The results for these proximal sites show a recovery timescale of ~700 kyr, which is significantly longer than that of the distal sites (~200 kyr). The interval showing the <sup>187</sup>Os/<sup>188</sup>Os decline coincides with the enrichment of hydrothermally-derived Mn, implying that hydrothermal venting at the Chicxulub structure may have played a role in the marine chemistry and ecosystem of the Gulf of Mexico.
Authors
- Honami Sato (ORCID: https://orcid.org/0000-0002-1002-6453)
- Ignacio Arenillas (ORCID: https://orcid.org/0000-0003-4632-533X)
- Philippe Claeys (ORCID: https://orcid.org/0000-0002-4585-7687)
- José Antonio Arz
- Christopher M. Lowery (ORCID: https://orcid.org/0000-0002-0101-4397)
- Steven Goderis (ORCID: https://orcid.org/0000-0002-6666-7153)
- J. Morgan (ORCID: https://orcid.org/0000-0003-2933-9473)
- Vicente Gilabert (ORCID: https://orcid.org/0000-0001-7302-5901)
- S. P. S. Gulick (ORCID: https://orcid.org/0000-0003-4740-9068)
- Akira Ishikawa (ORCID: https://orcid.org/0000-0002-8938-0200)
Institutions
- Tokyo Institute of Technology (JP)
- Planetary Science Institute (US)
- Japan Agency for Marine-Earth Science and Technology (JP)
- Vrije Universiteit Brussel (BE)
- Kyushu University (JP)
- Universidad de Zaragoza (ES)
- Planetary Systems (United States) (US)
- Instituto Aragonés de Ciencias de la Salud (ES)
- Imperial College London (GB)
- Universitat de Barcelona (ES)
- The University of Texas at Austin (US)
Publication Details
- Journal
- Nature Communications
- Published
- 2025-04-08
- DOI
- https://doi.org/10.1038/s41467-025-58112-x
- Citations
- 1
- Primary Topic
- Astro and Planetary Science
- Type
- article
- Field-Weighted Citation Impact
- 1.15
Funders
- National Aeronautics and Space Administration
- European Commission
- Belgian Federal Science Policy Office
- Fonds Wetenschappelijk Onderzoek
- Universidad Nacional Autónoma de México
- Vlaamse regering
- Japan Society for the Promotion of Science
- Japan Agency for Marine-Earth Science and Technology
- European Regional Development Fund
- Agencia Estatal de Investigación