GEOLOGY OF THE PUAGNE AREA, SAMBRE-ET-MEU SE BAND (BELGIUM) - HYPOTHESIS BASED ON THE MATURATION STATE OF THE FOSSILIZED PALYNOMORPHS

The Sambre-et-Meuse Band comprises Ordovician and Silurian strata with a low degree of evolution (absence of slaty cleavage, a mean reflecta nce -Ro- values of the dispersed organic matter), except in the three localities: Ombret, Oxhe and the southern part of the ''Pointe de Puag ne''. The reflectance values along a meridian line through Puagne, all ow the accurate location of several thrust faults and postulate a low sedimentation during the Lochkovian on the Sambre-et-Meuse. The origin of the reworked acritarchs in the Lower Devonian is reconsidered.