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January 26, 2026Meteoritics and Planetary ScienceOpen Access

The effect of early diagenetic processes on the quantification of fossil micrometeorite abundance and flux in the geological record

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Authors

IMIsabelle MattiaMGM. J. GengeMSMartin D. Suttle

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Overview

This research investigates how early diagenetic processes affect fossil micrometeorites' abundance and flux in geological records, suggesting preservation strategies.

Key Points

  • This study aims to explore how early diagenetic processes impact the preservation and quantification of fossil micrometeorites in sedimentary rocks.
  • Analyzed fossil micrometeorites from Cenomanian sediments in the Cretaceous Chalk Supergroup
  • Used optical and SEM–EDX analyses to identify I-type cosmic spherules
  • Investigated calcitic concretions as potential sites for enhanced preservation
  • Identified 17–18 I-type spherules with typical dendritic textures and signs of alteration
  • Found calcitic concretions had a comparable concentration of I-types to the surrounding marl
  • Demonstrated that preservation per original sediment volume in concretions could be enhanced by up to ~60%

Cite This Study

Mattia et al. (2026) studied this question.

synapsesocial.com/papers/69770413722626c4468e910chttps://doi.org/10.1111/maps.70105
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Also Consider

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  1. 1The geochemistry of concretions from the Kimmeridge Clay Formation of southern and eastern England1991 · 79 citations
  2. 2Diversity among fossil micrometeorites in the late Devonian2025 · 1 citations
  3. 3Diagenetically altered fossil micrometeorites suggest cosmic dust is common in the geological record2017 · 52 citations
  4. 4The classification of micrometeorites2008 · 269 citations
  5. 5Accretion Rates of Meteorites and Cosmic Dust in the Early Ordovician1997 · 93 citations