|OSTRACODS FROM THE EIFELIAN/GIVETIAN TRANSITION AT GLAGEON|In: Géobios. Association Européenne de Paléontologie: Lyon. ISSN 0016-6995, more
OSTRACODS; EIFELIAN; GIVETIAN; PALEOECOLOGY; SEDIMENTOLOGY
|Authors|| || Top |
- Casier, J.G.
- KASIMI, R.
- Preat, A.
Fifty-six ostracod species are recognized in the Hanonet Formation (Upper Eifelian) and in the lowermost Trois-Fontaines Formation (Lower Givetian) of the Glageon Quarry (Southern border of the Dinant Basin, Avesnois, Northern France). The ostracods belong to the Eifel ecotype sensu BECKER (in BANDEL & BECKER, 1975) and two assemblages are recognized : 1. assemblage III characterizes a relatively quiet marine environment below wave base on the mid-ramp setting (Hanonet Formation); 2. assemblage II characterizes a shallow marine environment above wave base on the inner-ramp (lower part of the Trois-Fontaines Formation). Comparatively with other outcrops from the Southern border of the Dinant Basin, the sea level fluctuations were of very low amplitude near the Eifelian/Givetian boundary at Glageon. The study of sediments in Glageon is consistent with the data from ostracods.