Achêne - Leignon. Carte géologique de Wallonie à l'échelle 1:25.000. 54/5-6 ; Achêne - Leignon. Geological map of Wallonia (Belgium) at the scale 1:25.000. 54/5-6

New geological map of Wallonia published at the scale of 1/25.000, based on a new field work and using previous scientific data produced, since the previous edition of Lohest and Mourlon published in 1900 at the scale 1/40.000 by the "Commission Géologique de Belgique". The sheet "Achêne" has been previously mapped by Dupont and Mourlon at the scale of 1/20.000 for the "Musée Royal d'Histoire Naturelle de Belgique" but never published. ; carte géologique (lithostratigraphique) couleurs sur fond topographique ; Modernisation de la carte géologique de la Wallonie ; 1:25 000