Observations on the Ichnology of the Meguma Group (? Cambro-Ordovician) of Nova Scotia

Auteurs-es

  • R. K. Pickerill Department of Geology, University of New Brunswick, Fredericton, New Brunswick* Canada E3B 5A5
  • J. Duncan Keppie Department of Mines and Energy, 1690 Mollis Street, Halifax, Nova Scotia, Canada B3J 2X1

DOI :

https://doi.org/10.4138/1381

Résumé

The trace fossils Arenicolites variabalis Cirauliahnis montanus and Paleodictyon (Glenodictyum) cf. imperfection from the ?Cambro-Ordovician Meguma Group of Nova Scotia are described in detail. The significance of the occurrence of each of these ichnospecies is also noted. The environmental and stratigraphic ranges of A. variabalis are extended respectively to 'deep water' and the Ordovician; the stratigraphic range of C. montanus is extended to the Ordovician and its presence in the Meguma Group to date represents the first and only recording of the species in the western hemisphere; P. cf, irnperfectum provides additional evidence that at least part of the Goldenville Formation is Ordovician. RÉSUMÉ On décrit en détail les traces fossiles Arenicolites variabalis, Circulichnis montanus et Paleodiotyon (Glenodictyum) cf, imperfection provenant du groupe Meguma (?Cambro-Ordovicien) de la Nouvelle-Ecosse. De plus, l'on met en évidence la signification de la presence de chacune de ces ichnoespèces. On étend l'environnement d'A. variabilis jusqu'en 'eau profonde' et sa portée stratigraphique jusqu'à l'Ordovicien; la portée stratigraphique de C. montanus est étendue à l'Ordovicien et jusqu'à ce jour, le groupe Meguma repréaente le seul endroit dans l'hemisphère ouest oû sa présence est notée; P. cf. imperfectum fournlt une preuve de plus qu'au moins une partie de la formation de Goldenville date de l'Ordovicien. [Traduit par le journal]

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Publié-e

1981-10-10

Comment citer

Pickerill, R. K., & Keppie, J. D. (1981). Observations on the Ichnology of the Meguma Group (? Cambro-Ordovician) of Nova Scotia. Atlantic Geoscience, 17(3). https://doi.org/10.4138/1381

Numéro

Vol. 17 No. 3 (1981)

Rubrique

Notes

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