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Étude isotopique du cycle biogéochimique du magnésium à haute précision : impact de la biologie terrestre

Abstract : Understanding and quantifying the biogeochemical cycle of carbon during the alteration process was modeled according to different parameters. The assessment of the alteration balance of rocks and the determination of control factors is a major tool for understanding the Earth's climate. Chemical erosion of silicate and carbonate minerals in the long term plays an important role in the (Berner et al., 1983). Magnesium is a chemical soluble in water, it is mainly due to the alteration of rocks. The phenomenon of alteration is a preponderant factor in the regularization of the terrestrial climate by consuming atmospheric CO₂. Moreover, this chemical element (Mg) represents a nutrient essential to life (plant growth). The objective of my thesis work is to develop a tool isotope to trace the biogeochemical cycle of Mg. My job will be to quantify and qualify the biogeochemical cycle at the small catchment scale. On the other hand, we will be interested in basins on a larger scale. The Himalayan and Taiwanese basins which are characterized by of alteration strongly influenced by the reaction kinetics.
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Submitted on : Monday, November 15, 2021 - 10:22:22 AM
Last modification on : Thursday, January 13, 2022 - 10:35:49 AM
Long-term archiving on: : Wednesday, February 16, 2022 - 7:36:53 PM


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  • HAL Id : tel-03428390, version 1


Imene Bedja. Étude isotopique du cycle biogéochimique du magnésium à haute précision : impact de la biologie terrestre. Géochimie. Université de Lorraine, 2021. Français. ⟨NNT : 2021LORR0162⟩. ⟨tel-03428390⟩



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