{"refrec":{"BRefID":223814,"RR":"<b>Steemans, P.</b> (1981). Etude stratigraphique des spores dans les couches de transition \"Gedinnien-Siegenien\" à Nonceveux et à Spa (Belgique). <i>Ann. Soc. géol. Belg. (1968) 104(1)</i>: 41-59","BEntID":215537,"PublicFlag":1,"CheckedFlag":0,"wosflag":null,"vabbflag":null,"RefStringPartII":". <i>Ann. Soc. Géol. Belg. (1968) 104(1)</i>: 41-59","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Steemans, P.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Steemans, P.","Englishabstract":"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.","AbstractOtherLang":"Une étude stratigraphique des spores a été réalisée dans les couches de transition \"Gedinnien - Siegenien\" (Dévonien Inférieur) à Nonceveux et à Spa. Sur les 140 taxa observés, seulement 50 sont communs aux deux coupes. A l'aide de ces derniers, 3 biozones communes aux deux coupes ont été définies. Une quatrième zone a été trouvée à Nonceveux. Les 3 premières ont permis de faire, sur une base biostratigraphique, des corrélations entre les deux coupes. Les quatre biozones servent à relier ces observations et d'autres faites sur le bord sud du synclinorium de Dinant et au Pays de Galles. L'étude des acritarches remaniés associés aux spores accroit le nombre d'observations déjà faites par M. Vanguestaine (1979). L'espoir de réaliser une biostratigraphie élaborée dans les sédiments littoraux du Dévonien Inférieur ardennais commence a se concrétiser.","BibLvlCode":"AS","StandardTitle":"Etude stratigraphique des spores dans les couches de transition \"Gedinnien-Siegenien\" à Nonceveux et à Spa (Belgique)","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-04-19 01:31:33.732836","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":1981,"MonPub":null,"DateUpdate":"2015-09-10","DateCreate":"2013-03-21","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":1},"refs":null,"anarec":{"AnaID":223814,"PubliDate":1981,"Pagination":"41-59","XtraPublOfAnaID":null,"ISBN":null,"Volume":"104","Issue":"1","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":45503,"SerRR":"Annales de la Société géologique de Belgique. 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