LES FORMATIONS DU ...
LES FORMATIONS DU DEVONIEN MOYEN DE LA BELGIQUE
P. Bultynck, M. Coen-Aubert, L. Dejonghe, J. Godefroid, L. Hance, D. Laroix, A. Préat, P. Stainier, P. Steenmans, M. Streel & F. TourneurMemoirs of the GSB n°30 - 1991
ABSTRACT.
The authors present proposals to standardize the subdivision into formations of the Middle Devonian strata of the Dinant Synclinorium, the Namur Synclinorium and the Vesdre Massif. They recognize ten formai formations, and one informal, in the Couvinian (uppermost Emsian and Eifelian) and the Givetian strata of the southern flank of the Dinant Synclinorium. These formations are from older to younger : the St.-Joseph Fm, the Eau Noire Fm, the Couvin Fm, the Jemelle Fm, the Lomme Fm, the “X” Formation at Wellin, the Hanonet Fm, the Trois-Fontaines Fm, the Terre d'Haurs Fm, the Mont d'Haurs Fm and the Fromelennes Fm. The Middle Devonian succession of the northern flank of the Dinant Synclinorium and of the southern flank of the Namur Synclinorium comprises the Rivière Fm, the Névremont Fm and the Le Roux Fm. On the northern flank of the Namur Synclinorium, the Middle Devonian is represented by the Bois de Bordeaux Fm.In the Middle Devonian succession of the Vesdre Massif, the authors recognize the Vicht Fm, the Pépinster Fm, the Névremont Fm and the Le Roux Fm.
The authors describe and figure a stratotype and, in some cases, an other reference section for each formation. Lateral changes and age of the formations are also discussed.
