ABSTRACT

An outcrop of Albian-aged sediments located on Fall Creek, in the Rocky Mountain Foothills, contains an interval of the Viking Formation. The significance of this locality, which was studied by integrating lithostratigraphy and foraminiferal content, is threefold. This outcrop, which can be considered as a reference section, is the first documented occurrence of the Viking Formation. The Viking Formation at this locality is not underlain by the early late Albian Joli Fou Formation, such as in the central plains, but rather by marine sediments of the middle Albian Hulcross Formation/Harmon Member. The distribution of marine sediments associated with the Hulcross Sea are much more extensive than previously documented.

RESUME

Un affleurement de sediments de l'Albien situe au ruisseau Fall, dans les Foothills des montagnes Rocheuses contien un affleurement de la Formation de Viking. L'importance de cette localite qui a ete etudiee en integrant la lithostratigraphie et le contenu en foraminiferes, est de trois ordres. Il s'agit de la premiere apparition documentee de la Formation de Viking en affleurement. La Formation de Viking de cette localite ne recouvre pas la Formation Joli Fou de l'Albien superieur comme dans les plaines centrales mais recouvre plutot des sediments marins de la Formation Hulcross/Membre de Harmon de l'Albien moyen. La distribution des sediments marins associes a la mer de Hulcross sont beaucoup plus etendus que ce qui avait ete documente auparavant.

Traduit par Lynn Gagnon