The information on this page is a summary description.
The full formal description is available here: Gentbrugge Formation
| Abbreviation | http://ncs.naturalsciences.be/paleogene-neogene/275-gentbrugge-formation-012017 |
| Parent unit | Formal |
| Child units | Ieper Group |
| Lithological description | Kwartecht Member, Merelbeke Member, Pittem Member, Vlierzele Member, Aalterbrugge Member |
| Age | This formation of marine origin consists at the base of a very fine silty clay or clayey, very fine silt. To the south and upwards, it is followed by an alternation of layers of glauconiferous, clayey silty, very fine sand and clayey sandy, coarse silt, disturbed by bioturbation. The clayey members are covered by fine sand, clearly horizontally bedded or cross bedded. The sediments contain different layers of sandstones. |
| Thickness | Late Ypresian. |
| Area of occurrence | Maximum 50 m in the north and decreasing to the south and the east. |
| Type locality | the formation mainly outcrops in the centre of East? and West?Flanders and on the hills in the southern part of East? and West?Flanders. It occurs also in the subsoil of the province of Antwerp and northwest Belgium. Some outliers can be observed to the south till northern Hainaut and eastwards from the Senne River. The regional distribution map of the Gentbrugge Formation is figured in Maréchal (1993, p 222) as understood at that time; the extension mapped on the 1:50 000 geological maps can be consulted on https://dov.vlaanderen.be/dovweb/html/geologie.html. |
| Alternative names | |
| Authors | |
| Date | Geets (1988) and Steurbaut (1998) |
| Cite as | Steurbaut, E., De Ceukelaire, M., Lanckacker, T., Matthijs, J., Stassen, P., Van Baelen, H. & Vandenberghe, N., 2017. The Gentbrugge Formation, 09/01/2017. National Commission for Stratigraphy Belgium. http://ncs.naturalsciences.be/lithostratigraphy/Gentbrugge-Formation |
