Mid-Famennian cryptalgal-sponge crinoidal mud mounds and oolitic ironstones of the Limbourg-Dolhain area (Verviers Synclinorium, Eastern Belgium): Stop 2. ; Récifs famenniens dans la Synclinorium de la Vesdre (Ardenne orientale, Belgique): monticules de boue carbonatée cryptalgaire à crinoïdes, éponges et oolithes ferrugineuses du Famennien moyen de la région de Limbourg-Dolhain (Verviers Synclinorium, est de la Belgique

After the mass extinction of colonial reefs in the Ardennes at the Frasnian-Famennian boundary, (crypt)algal-sponge-crinoidal mud mounds suddenly appeared during the mid-Famennian time (Early-Late marginifera Zone) in the Verviers Synclinorium (Eastern Belgium). These carbonate buildups represent the first reported occurrence of mud mounds in the latest Upper Devonian of Western Europe. The mounding sites for the mud mounds (locally known as "the Marbre rouge à crinoïdes de Baelen") are developed on a block-faulted basement. ; Après l'extinction massive des récifs coralliens des calcaires dévo... Mehr ...