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Methaniferous active faults and seismic cycle in the genesis of the Athabasca giant U deposits: conceptual and numerical investigation

Yannick Branquet 1, 2, 3 Philippe Boulvais 2 Julien Mercadier 4 Patrick Ledru 5 Charles Khairallah
1 ISTO - Institut des Sciences de la Terre d'Orléans - UMR7327
2 GR - Géosciences Rennes
3 Métallogénie - UMR7327
ISTO - Institut des Sciences de la Terre d'Orléans - UMR7327
4 CREGU - Centre de recherches sur la géologie des matières premières minérales et énergétiques
5 AREVA
Abstract : The reduction process of uranyles and the graphitic faults dynamics are still unconstrained in the formation of giant unconformity-related uranium deposit of Athabasca. Previous and new data on graphitc faults and mineralization are suggestive of paleo-seismicity, possibly during the mineralizing event. Highlighted by data from current active methaniferous fault, we proposed a new model based on seismic cycle for that mineralization, implying seismic pumping, methane production and discharge. Numerical modeling shows that consequences are of first order on paleo-hydrodynamics.
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Conference papers
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https://hal-insu.archives-ouvertes.fr/insu-02281695
Contributor : Isabelle Dubigeon <>
Submitted on : Monday, September 9, 2019 - 2:12:07 PM
Last modification on : Friday, February 19, 2021 - 4:22:04 PM

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  • HAL Id : insu-02281695, version 1

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Citation

Yannick Branquet, Philippe Boulvais, Julien Mercadier, Patrick Ledru, Charles Khairallah. Methaniferous active faults and seismic cycle in the genesis of the Athabasca giant U deposits: conceptual and numerical investigation. 15th Biennial Meeting of the Society for Geology Applied to Mineral Deposits, Aug 2019, Glasgow, United Kingdom. ⟨insu-02281695⟩

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