The Kalkowsky Project - Chapter VI

A panorama of broken ooids

Authors

  • Bruno R.C. Granier Author
  • Philippe Lapointe Author

DOI:

https://doi.org/10.2110/carnets.2024.2405

Keywords:

oolite, broken ooids, broken and regenerated ooids, radial fabrics, Argentina, France, Greece, Spain

Abstract

Broken ooids are known to occur in both aragonitic and calcitic ooids with radial fabrics. In the literature, it has been suggested that synsedimentary breakage could be related to attrition/mechanical impacts, hypersalinity, or desiccation. However, this paper demonstrates that none of the aforementioned phenomena provides a valid explanation. Although the exact process remains unknown (potentially involving some synsedimentary recrystallization), it is shown that: 1) the breakage is genetically linked to the radial fabrics; 2) the ratio of ooid breakages increases with the relative thickness of the radial cortical layers; 3) fracture growth in broken ooids proceeds centripetally.

CG2405

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Published

2024-02-29

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Section

Articles

How to Cite

The Kalkowsky Project - Chapter VI: A panorama of broken ooids. (2024). Carnets Geol., 24, 91-112. https://doi.org/10.2110/carnets.2024.2405