Vert Galand Formation

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

Abbreviation VEG
Parent unit
Child unit Bruyelle Member, Merlin Member
Lithological description The Vert Galand Formation groups the marly facies of Turonian age, which were known as “Dièves” and “Fortes Toises”. The Vert Galand Formation (VEG) consists of two distinctive members, the Bruyelle and Merlin Members. Summary description from Hennebert & Doremus (1997a, b), from top to bottom:
VEG Fm Merlin Member: greenish-grey marls, with fine glauconite; white marl with grey siliceous concretions.
VEG Fm, Bruyelle Member: greenish-grey marl, with phosphatised gravel at the base; pale-grey marl with fine to coarse glauconite grains.
Age Turonian
Thickness Up to 75 m in the Mons basin, 50 m in the Tournai basin.
Area of occurrence Mons (Haine) and Tournai basins, transgressing over the Brabant Parautochton, extending into the North of France.
Type locality No formal stratotype defined for the formation. The 19th century quarries in Tournaisian limestone of the ‘quartier Longuesault – Barges – Vert Galand’ southwest of Tournai allowed observations of the Cretaceous overburden. Decimal geographical coordinates for Rue du Vert Galant 50,576 – 3, 363; Lambert ’72 coordinates 78750 – 141100.
Alternative names
Authors Dusar, M.
Date 01/12/2017
Cite as Dusar, M., 2017. The Vert Galand Formation, 01/12/2017. National Commission for Stratigraphy Belgium.

Lithostratigraphic units

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