Ostracodes et sédimentologie du sommet de l'Eifelien et la Base du Givetien, à Couvin (bord sud du Bassin de Dinant, Belgique)

About seventy ostracod species are present in the upper part of the Hanonet Formation (Upper Eifelian) and in the base of the "Trois-Fontaines" Formation (Lower Givetian) of the "La Couvinoise" quarry at Couvin (southern border of Dinant Basin, Belgium). The ostracods belong to the "Eifeler Okotyp" and four associations are recognized which characterize successively a quiet open marine environment on the outer ramp (ecozone III), a shallow marine environment with increasing of water turbulence on the mid- and inner ramps (ecozone II), an open lagoonal environment on the upper part of the inner... Mehr ...