Kortrijk Formation | |
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Stratigraphic range: Ypresian ~ | |
Type | Geological formation |
Unit of | Ieper Group |
Sub-units | Mont Héribu Member Orchies or Saint-Maur Member Moen or Roubaix Member Aalbeke Member |
Underlies | Tielt Formation |
Overlies | Landen Group Tienen & Hannut Formations |
Thickness | up to 125 m (410 ft) |
Lithology | |
Primary | Marine claystone |
Location | |
Region | Hainaut, West Flanders, East Flanders & Walloon Brabant |
Country | Belgium |
Extent | Campine Basin |
Type section | |
Named for | Kortrijk |
Region | West Flanders |
The Kortrijk Formation (Dutch: Formatie van Kortrijk; French: Formation de Courtrai; abbreviation: Ko; named after the West Flemish city of Kortrijk) is a geologic formation in the Belgian subsurface. This formation crops out in northern Hainaut, southern West and East Flanders and in Walloon Brabant. The formation consists of marine clay from the Ypresian age (early Eocene, about 54 million years old).[1][2]