Etude stratigraphique des spores dans les couches de transition "Gedinnien-Siegenien" à Nonceveux et à Spa (Belgique)
Steemans, P. (1981). Etude stratigraphique des spores dans les couches de transition "Gedinnien-Siegenien" à Nonceveux et à Spa (Belgique). Ann. Soc. géol. Belg. (1968) 104(1): 41-59
In: Annales de la Société géologique de Belgique. Vaillant-Carmanne: Liège. ISSN 0037-9395, meer
Gedinnian-Siegenian transition beds (Lower Devonian) have been studied palynologically at Nonceveux and Spa. 140 Spore taxa are recorded, 50 of which are common to both sections. The latter have allowed the recognition of three biozones to which a fourth can be added for Nonceveux only. The four biozones can be used for correlations on the south flank of the Dinant Synclinorium and with Wales. Reworked acritarchs associated with the spores allowed further observations to those made known already by Vanguestaine (1979). It is evidently possible to erect a viable biostratigraphy for the littoral sediments of the Lower Devonian in the Ardennes.
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