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From a series of whole-coal channel samples of the Sydney Coalfield of Nova Scotia, data on 30 metals and sulfur were obtained in order to study their stratigraphic variation, abundance, and origin. The data suggest the presence of distribution patterns (trends) that can be described in terms of concentration peaks occurring at the bottom or top of the channel samples. Complex or cyclical trends are observed in coal samples from the thicker 200 cm seams. These trends are genetically linked with deposition of pyrite and the depositional history of the peat swamps to form coal. Regional trends are not found in the data but there is a suggestion that some chalcophile metals are age-dependent and occur in the younger seams in the Point Aconi area.   RESUME  On a preleve des donnees sur 30 metaux et le soufre dans une suite d'echantillons de charbon global provenant de chenaux du bassln houiller de Sydney, en Nouvelle-Ecosse, afin d'en etudier la variation stratigraphique, l’abondance et l'origine. Leur traitement suggere la presence de patrons de distribution [tendances] sous la forme de pics de concentration qui se trouvent a la base ou au sommet des echantillons de chenal. On observe des tendances complexes ou cycliques dans les echantillons de charbon provenant des couches plus epaisses [200 cm]. L'origine de ces tendances est reliee au depot de la pyrite ainsi qu's l'histoire du remplissage des tourbieres d'ou provient le charbon. A defaut d'avoir une tendance regionale, ces donnees conduisent a suggerer une dependence vis-a-vis l'âge de certains mineraux chalcophiles qui se trouvent dans les lits plus jeunes de la region de Point Anconi.  [Traduit par le journal]

Geochemical trends in whole-seam coal channel samples from the Sydney coalfield (upper carboniferous), Nova Scotia, Canada