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October 2, 2025Geochemistry Geophysics GeosystemsOpen Access

High‐Fidelity Cretaceous‐Paleogene Boundary Investigations: Records of Impact and Transport

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Authors

CRCatherine H. RossBaylor UniversityCKChristian KoeberlUniversity of ViennaSGS. P. S. GulickPlanetary Systems (United States)

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Overview

New research uncovers a four-layer structure of ejecta in sediment from the K-Pg boundary, suggesting significant changes in understanding impact transport mechanisms.

Key Points

  • A new model describes four ejecta layers instead of the previous dual-layer model.
  • Micro-x-ray fluorescence mapping revealed distinct layers of impact spherules and shocked minerals.
  • This research provides insights into the mechanisms of ejecta production and transport after the Chicxulub impact.
  • The findings have implications for understanding sedimentary processes in other K-Pg sites worldwide.

Cite This Study

Ross et al. (2025) studied this question.

synapsesocial.com/papers/68de6f3f83cbc991d0a22b16https://doi.org/10.1029/2025gc012674
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