CHOIX1

Organic matter (OM) represents only a small part of the sedimentation. Unlike other deposited particles, it can evolve rapidly during burial by interacting with the grains of the host rock and producing fluids (gases and liquids) that will be very mobile. Because of its degradation by bacteria, its preservation depends on many parameters but above all on the fine grain size of the grains deposited at the same time. Thus, clays represent the most favourable environment for the preservation of OM, but their complex mineralogy makes them a particular material that will also be transformed during burial. The products of their interactions have of interest to the mining and then to the oil industry, of course, since these processes are at the origin of large series of coal and the production of hydrocarbons. But recently, studies have been increasingly interested in these two elements as tracers of the origin of sediments and as markers of burial, which is of major interest in understanding the filling of basins and their post-deposition evolution.

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Mineral deposits, exploration techniques, geostatistics, mining economics. The training is mainly focused on interventions by professionals (mining and quarrying). Two days of field work illustrate certain exploration methods, in particular through the study of uranium mineralization and gypsum.

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