{"refrec":{"BRefID":223806,"RR":"<b>Bless, M.J.M.; Boonen, P.; Dusar, M.; Soille, P.</b> (1981). Microfossils and depositional environment of late Dinantian carbonates at Heibaart (Northern Belgium). <i>Ann. Soc. géol. Belg. (1968) 104(1)</i>: 135-165","BEntID":215529,"PublicFlag":1,"CheckedFlag":0,"wosflag":null,"vabbflag":null,"RefStringPartII":". <i>Ann. Soc. Géol. Belg. (1968) 104(1)</i>: 135-165","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Bless, M.J.M.; Boonen, P.; Dusar, M.; Soille, P.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Bless, M.J.M. <i>et al.</i>","Englishabstract":"The core intervals of five boreholes in the Dinantian carbonates of the Heibaart area in northern Belgium have been investigated on their microfossil contents and lithofacies. The foraminifers suggest an early Warnantian age. No conodonts have been recovered. Twenty-eight species of ostracodes are described, two of them being new : <i>Bairdia robinsoni</i> nov. sp. and <i>Rectobairdia conili</i> nov. sp. The carbonates consist of bioclastic wackestones, bioclastic-peloid grainstones and algal bindstones. The depositional environment varied from an open marine shelf lagoon in the earliest Warnantian (Cf 6a zone) to very shallow lagoons with a restricted water circulation in the Cf 6a - ß zone. The extreme large size of the ostracode species recovered from the Cf 6a - ß zone is not characteristic of the very shallow lagoon environment. Extremely large ostracodes have also been recognized in other carbonate facies of Dinantian age.","AbstractOtherLang":"Le contenu en microfossiles et les lithofaciès ont été étudiés à partir des intervals carrottés de cinq sondages dans les carbonates dinantiens de la région de Heibaart dans le Nord de la Belgique. Les foraminifères suggèrent un âge Warnantien précoce. Aucun conodonte n'a été isolé. Vingt-huit espèces d'ostracodes sont décrites ; deux d'entre elles sont nouvelles : <i>Bairdia robinsoni</i> nov. sp. et <i>Rectobairdia conili</i> nov. sp. Les carbonates consistent en \"wackestones\" bioclastiques, en \"grainstones\" à \"pellets\" bioclastiques et en \"bindstones\" algaires. L'environnement de dépôt a varié d'un lagon ouvert aux influences marines dans le Warnantien le plus ancien (zone Cf 6a) à des lagons très peu profonds à circulation d'eau réduite dans la zone Cf 6a - ß. La très grande taille des espèces d'ostracodes isolés de la zone Cf 6a - ß n'est pas caractéristique d'un faciès lagunaire très peu profond. Des ostracodes de très grande taille ont été observés dans d'autres faciès carbonatés d'âge Dinantien également.","BibLvlCode":"AS","StandardTitle":"Microfossils and depositional environment of late Dinantian carbonates at Heibaart (Northern Belgium)","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-04-21 01:32:00.046017","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":223806,"PubliDate":1981,"Pagination":"135-165","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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