{"refrec":{"BRefID":233641,"RR":"<b>Casier, J.-G.; Lethiers, F.; Préat, A.</b> (2001). Ostracods and rock facies associated with the Devonian-Carboniferous boundary series in the Puech de la Suque section, Montagne Noire, France. <i>Bull. Kon. Belg. Inst. Natuurwet. Aardwet. = Bull. - Inst. r. sci. nat. Belg., Sci. Terre 71</i>: 31-52","BEntID":225327,"PublicFlag":1,"CheckedFlag":0,"wosflag":0,"vabbflag":null,"RefStringPartII":". <i>Bull. Kon. Belg. Inst. Natuurwet. Aardwet. = Bull. - Inst. r. sci. nat. Belg., Sci. Terre 71</i>: 31-52","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Casier, J.-G.; Lethiers, F.; Préat, A.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Casier, J.-G. <i>et al.</i>","Englishabstract":"4,750 ostracods valves and carapaces have been extracted from across the Devonian-Carboniferous boundary sequence in the Puech de la Suque section, Montagne Noire, southern France, and 72 species have been identified half of which belong to the Thuringian ecotype. The study revealed that a maximum of 31.5 percent of the species disappeared in this section as a result of the Hangenberg Event — a low rate of extinction compared to that generally associated worldwide with the Frasnian-Famennian boundary (75 %). The Hangenberg Event differs also from the Frasnian-Famennian boundary Event by the absence of ostracod \"disaster species\". The facies of the boundary series is relatively homogeneous and composed of grey to slightly pinkish and yellowish mudstones and wackestones with various bioclasts (ammonoids, trilobites, bivalves etc.), and radiolarian wackestones and packstones. Despite the difficulty to reconstruct a bathymetric profile, the inferred environment points to quiet and deeper water-conditions, below or near the storm wave base, and there is no evidence of turbidites and mudflows. The succession corresponds most likely to a distal carbonate ramp, its lower part being characterized by hemipelagic or pelagic sediments. The microfacies analysis shows that no significant paleo-environmental changes occurred at the Devonian-Carboniferous boundary.Two new species (<i>Proparaparchites? procerus</i> nov. sp. and <i>Paraparchites puechdelasuquensis</i> nov. sp.), and one new sub-species (<i>Gerodia weyeri olempskae</i> nov. subsp.) are established.","AbstractOtherLang":"4750 valves et carapaces d'ostracodes ont été extraites de part et d'autre de la limite Dévonien-Carbonifère, dans la coupe du Puech de la Suque (Montagne Noire, France) et 72 espèces sont identifiées dont la moitié appartient à l'écotype de Thuringe. L'étude montre qu'un maximum de 31,5 pour-cent des espèces d'ostracodes disparaissent suite à l'Evénement Hangenberg, valeur faible en comparaison de l'extinction (75 %) observée à la limite des étages Frasnien et Famennien. L'Evénement Hangenberg diffère aussi de celui de la limite Frasnien-Famennien, par l'absence d'espèces d'ostracodes profiteuses. Les faciès observés sont homogènes et composés de mudstones et wackestones gris légèrement rosâtres ou jaunâtres, à bioclastes variés (ammonoïdes, trilobites. bivalves...), et de wackestones et packstones à radiolaires. Malgré la difficulté d'établir une courbe bathymétrique, l'environnement correspondant était calme et profond, situé sous ou à proximité du niveau d'action des vagues de tempêtes, sans la présence de turbidites et de courants de boue. La succession correspond à une rampe carbonatée distale, dont la partie inférieure est caractérisée par une sédimentation hémipélagique ou pélagique. L'analyse des microfaciès montre qu'il n'y a pas de changement important de l'environnnement au niveau de la limite Dévonien- Carbonifère.Deux nouvelles espèces (<i>Proparaparchites? procerus</i> nov. sp. et <i>Paraparchites puechdelasuquensis</i> nov. sp.) et une nouvelle sous-espèce (<i>Gerodia weyeri olempskae</i> nov. subsp.) sont fondées.","BibLvlCode":"AS","StandardTitle":"Ostracods and rock facies associated with the Devonian-Carboniferous boundary series in the Puech de la Suque section, Montagne Noire, France","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2025-07-02 08:33:14.980000","timezone_type":1,"timezone":"+00:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"Ostracods, Sedimentology, Devonian-Carboniferous boundary, Hangenberg Event, Montagne Noire","OtherDescriptors":null,"Notes":null,"AnaPub":2001,"MonPub":null,"DateUpdate":"2014-02-17","DateCreate":"2014-02-17","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":1},"refs":null,"anarec":{"AnaID":233641,"PubliDate":2001,"Pagination":"31-52","XtraPublOfAnaID":null,"ISBN":null,"Volume":"71","Issue":null,"BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":64308,"SerRR":"Bulletin van het Koninklijk Belgisch Instituut voor Natuurwetenschappen. 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