Summary of macrofloral biostratigraphy of Sydney Coalfield, Nova Scotia, Canada (Carboniferous, Westphalian/Cantabrian age)

Auteurs-es

  • Erwin L. Zodrow Department of Geology, University College of Cape Breton, Sydney, Nova Scotia B1P 612, Canada

DOI :

https://doi.org/10.4138/1672

Résumé

Bell's (1938) macrofloral biostratigraphy (three floristic zones of Westphalian C and D ages) of the Sydney Coalfield is fundamentally revised. The revision is based mainly on two lines of evidence: (1) newly collected macrofloras (sphenophylls, odontopterids, pecoplerids) by the present author and K. McCandlish since 1974 from the upper part of the Sydney Coalfield in the Point Aconi area, and (2) extension of ranges for some of Bell's records, especially S. cuneifolium and Linopteris oblique. As interpretative results, the age of the Sydney Coalfield is considered to be Westphalian C to Cantabrian (earliest Stephanian), with the two recognized macrofloristic zones (Lonchopteris eschweileriana and L. oblique zones) of Westphalian C, and Westphalian D and Cantabrian ages, respectively. Key words: macrofloral biostratigraphy revision, Westphalian C-Cantabrian, Sydney Coalfield, Canada. RÉSUMÉ La biostratigraphie macrofloristique du Bassin houiller de Sydney, telle qu'éablie par Bell en 1938 (trois zones floristiques d'âges westphaliens C et D), fait l'objetd'une profonde révision qui se jusdfie surtout (l)par de nouveIles récoltes de macroflore (sphénophyllées, odontoptéridées, pecoptéridées) réalisés depuis 1974 par l'auteur et K. McCandlish dans la partie supérieure de ce bassin (région de Point Aconi), ainsi que (2) par relargissement de l'extension d'une portion des taxons recensés par Bell, notamment S. cunefolium et Linopieris oblique. Suite à cette inteiprètalion,on considère que l’âge du Bassin houiller de Sydney s'échelonne du Westphalien B au Cantabrien (début du Stéphanien). De plus, on y reconnait deux zones macrofloristiques, soil la Zone à Lonchopteris eschweileriana et la Zone a L. oblique, respectivement d'âges westphalien C et westphalien D â cantabrien. Mots-clés: biostratigraphie macrofloristique, révision, Westphalien C à Cantabrien, Bassin houiller de Sydney, Canada. [Traduit par le journal]

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Publié-e

1989-04-01

Comment citer

Zodrow, E. L. (1989). Summary of macrofloral biostratigraphy of Sydney Coalfield, Nova Scotia, Canada (Carboniferous, Westphalian/Cantabrian age). Atlantic Geoscience, 25(1). https://doi.org/10.4138/1672

Numéro

Vol. 25 No. 1 (1989)

Rubrique

Articles

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