The information on this page is a summary description.
The full formal description is available here: Grandcourt Formation
Abbreviation
GRT
Parent unit
Child units
Lithological description
Generally bituminous grey clay and marl with a thin silty-calcareous lamination, and laminar limestone nodules (“Schistes Cartons” Member), passing toward the top to sandier laminated marl, rich in septaria. Occurrences of centimetric to decimetric limestone beds.
Age
The Grandcourt Formation is dated from Toarcian, from Harpoceras falciferum Zone to Grammoceras thouarcense Zone (Delsate, 1990; Laenen, 1991).
Thickness
Thickness of approximately 40 m in the western area. It thickens towards the east to reach about 60 m near the Luxemburg border.
Area of occurrence
The formation outcrops in the south of Belgian Lorraine
Type locality
Latour borehole.
Alternative names
Authors
Boulvain, F., Belanger, I., Delsate, D., Ghysel, P., Godefrout, P., Laloux, M., Monteyne, R. & Roche, M.
Date
01/01/2001
Cite as
Boulvain, F., Belanger, I., Delsate, D., Ghysel, P., Godefrout, P., Laloux, M., Monteyne, R. & Roche, M., 2001. The Grandcourt Formation, 01/01/2001. National Commission for Stratigraphy Belgium. http://ncs.naturalsciences.be/lithostratigraphy/Grandcourt-Formation
