Interpretation of gamma-rays logs: the distribution of Uranium in carbonate platform. - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Article Dans Une Revue Comptes Rendus Géoscience Année : 2005

Interpretation of gamma-rays logs: the distribution of Uranium in carbonate platform.

Résumé

High gamma-radioactivity in carbonates is usually ascribed to uranium of detrital minerals and organic matter, and to thorium and potassium of clays. The present study based on Urgonian marls and marly limestones (France) shows that some of the most radioactive values correspond instead to some ‘pure' limestones. These peaks are generally associated with a sequence boundary or a maximum flooding surface. Low-level γ-spectrometry and ICP–MS analyses show that although high radioactivities are mostly associated with uranium, there is no obvious correlation between uranium enrichment and lithology. Also, correlation between high radioactivity and argillaceous beds might not be systematic.

Domaines

Stratigraphie

Dates et versions

hal-00102963 , version 1 (03-10-2006)

Identifiants

Citer

M.C. Raddadi, Annie Arnaud-Vanneau, Gérard Poupeau, Elizabeth Carrio-Schaffhauser, Hubert Arnaud, et al.. Interpretation of gamma-rays logs: the distribution of Uranium in carbonate platform.. Comptes Rendus Géoscience, 2005, 337, pp.1457-1461. ⟨10.1016/j.crte.2005.08.009⟩. ⟨hal-00102963⟩
125 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More