Hannut Formation

Lithologies

• The Chercq Member, tuffite, clay and glauconite bearing sand layers. This member is most distinctively recognizable in the province of Hainaut;
• The Lincent Member, a locally lithified, predominantly clayey layer. It occurs in and around the Hesbaye region;
• The Halen Member, clayey silt and silty sand;
• The Waterschei Member, calcareous clay and silty clay. It occurs in the northeast of Belgium;
• The Grandglise Member, the upper glauconiferous sand. It is almost always present.

  Stratigraphic relations