Gentbrugge Formation

The information on this page is a summary description.
The full formal description is available here: Gentbrugge Formation

Abbreviation Ge
Parent unit Ieper Group
Child units Kwartecht Member, Merelbeke Member, Pittem Member, Vlierzele Member, Aalterbrugge Member
Lithological description 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.
Age Late Ypresian.
Thickness Maximum 50 m in the north and decreasing to the south and the
east.
Area of occurrence 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.
Type locality
Alternative names
Authors Steurbaut, E., De Ceukelaire, M., Lanckacker, T., Matthijs, J., Stassen, P., Van Baelen, H. & Vandenberghe, N.
Date 09/01/2017
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

Paleogene

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