5.1 Deville Group - Dv
Description: Equivalent of the “Système Devillien” of Dumont (1847). It consists of two formations from base to top: the La Longue-Haie and the Les 4 Fils Aymon Fms. The upper boundary of the Deville Group with the Revin Group is placed by Beugnies (1960) at the top of the Renaissance Mbr (Les 4 Fils Aymon Fm); its lower boundary is not observed.
(M. VANGUESTAINE)