A NEW GEOLOGICAL MAP OF THE BRABANT MASSIF, BELGIUM

A new geological map, mostly subcrop, of the Brabant Massif is present ed, based on a revised lithostratigraphy of the outcrop area and on re cently acquired palaeontological and lithological data from boreholes in the concealed area. New interpretations of magnetic and gravity dat a are used to extend the lithostratigraphical units into areas with fe w or no boreholes. A structural model of the western, northern and sou thern parts of the Brabant Massif is presented. The main anticlinal ax is plunges towards the west-northwest, its core comprising Upper Preca mbrian (?) to Lower Cambrian terrigenous rocks which outcrop in the so utheast. To the north of the main axis, younger rocks appear in regula r succession, but to the southwest this picture is complicated by the occurrence of a second anticlinal structure and by a subparallel magma tic arc.