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Évolution thermique des séries sédimentaires de la Marge ardéchoise : étude pétrographique de la matière organique et des argiles. Thermal evolution of the sedimentary series of the Ardèche Margin: petrological studies of organic matter and clays

Abstract : Two wells, Balazuc (BA1) and Morte-Mérie (MM1), located in a confined area (1200 m apart) and separated by the Uzer fault (a Liassic structure with a dip fault of 1300 m) were analysed using conventional methodologies and techniques (PRV, TAI, XRD, STEM) in order to compare the diagenetic evolution of clays and organic matter. The thermal convective process allows the circulation of hot fluids and the oxidation of organic matter. The conductive process allows the maturation of the organic matter, the expulsion of hydrocarbons and the deposit of pyrobitumes in the migration channels
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Luis Martinez, Joëlle Duplay, Jean-Robert Disnar, Geneviève Farjanel, Philippe Larqué, et al.. Évolution thermique des séries sédimentaires de la Marge ardéchoise : étude pétrographique de la matière organique et des argiles. Thermal evolution of the sedimentary series of the Ardèche Margin: petrological studies of organic matter and clays. Comptes Rendus Géoscience, Elsevier Masson, 2002, 334, pp.1021-1028. ⟨10.1016/S1631-0713(02)01848-5⟩. ⟨hal-00077687⟩

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