Alternative texts - timeline
Geological map of Wallonia
Isohypse-maps
Geological map - Brabant Massif
Timeline
1830 : Foundation of Belgium
1896 : Foundation of GSB - Geological mapping of surface cover
1920 : Subcrop map by Fourmarier
1968 : Subcrop map by Legrand
1993 : Subcrop map by De Vos et al
2004 : Subcrop map by De Vos et al
Click on the text of the 4 maps from 1920 to 2004 to get an illustration
1920 - Subcrop map by Fourmarier
1968 - Subcrop map by Legrand
1993 - Subcrop map by De Vos et al
2004 - Subcrop map by De Vos et al
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