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FLÉRON VERVIERS - Service géologique de Wallonie

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Juslenville GroupSeilles and Thon-Samson Formation (Ron<strong>de</strong>-HaieFormation not observed on this sheet) : limestones,generally light-coloured, metre- to plurimetrethickbed<strong>de</strong>d, overlain by the crinoidal limestonesof the Thon-Samson Formation ; ooidslocally abundant, bioclastic and algal layers.Lives Formation : dark grey stratified limestonesforming sedimentary sequences, with stromatolithictop. Cherts are concentrated in the upper part.BBNBBNBILBILBay-Bonnet Gruppe:Moha Formation:mittel- bis grobkörnige, dunkelgraue bis schwarzeKalksteine in Bänken mehrerer Meter Mächtigkeit;Vorkommen von Ooi<strong>de</strong>n.Terwagne Formation:Feine bis grobkörnige Kalksteine, dunkelgrau bisschwarz, in Bänken von einem Meter bis zumehrerer Meter Mächtigkeit, Vorkommen von 3konglomeratischen Lagen mehrerer DezimeterMächtigkeit (Kalksteinblöcke in einer tonigenMatrix).Brèche <strong>de</strong> la Belle-Roche Formation:Kalkbreccie.Groep van Bay-Bonnet:Formatie van Moha: donkergrijze tot zwarte mid<strong>de</strong>lmatigtot grofkorrelige kalksteen met ooï<strong>de</strong>n,in banken, één tot meer<strong>de</strong>re meters dik.Formatie van Terwagne: donkergrijze tot zwarte,fijne tot grofkorrelige kalksteen in banken, één totmeer<strong>de</strong>re meters dik. Er komen drie <strong>de</strong>cimetersdikkeconglomeraathorizonten voor (kalksteenblokkenin kleiige matrix).Formatie van <strong>de</strong> Breccie van Belle-Roche: kalksteenbreccie.Bay-Bonnet Group :Moha Formation : thick-bed<strong>de</strong>d medium- to coarse-grainedlimestones, dark grey to black ; occurrenceof ooids.Terwagne Formation : fine- to coarse-grained limestones,dark grey to black, medium- to thickbed<strong>de</strong>d;3 <strong>de</strong>cimetre-thick conglomeratic horizons(limestone pebbles in an argillaceousmatrix).Belle-Roche Breccia Formation: calcareous breccia.Bilstain Gruppe:Dolomies <strong>de</strong> la Vesdre Formation: Dolomitsteine,krinoi<strong>de</strong>nführen<strong>de</strong> Dolomitsteine, dunkelgrau bis141

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