The information on this page is a summary description.
The full formal description is available here: Longwy Formation
Abbreviation
LGW
Parent unit
Child units
Lithological description
Orange yellow sandy limestone, followed by shelly limestone with locally conglomeratic layers with bioclastic limestone clasts. The base of the formation corresponds to the first limestone deposit superposed on Mont-Saint-Martin or, towards the west, on Grandcourt Formation. Its top coincides with the base of the “Marnes de Longwy”.
Age
Longwy Formation is dated from Lower Bajocian Hyperlioceras discites Zone to Stephanoceras humphriesianum Zone (Maubeuge, 1951, 1954).
Thickness
The formation is about 50 m thick in the eastern area. Its thickness gradually thins towards the west, with no possibility of giving any value.
Area of occurrence
Longwy Formation crops out in the extreme south of Belgian Lorraine and the north-east of French Lorraine.
Type locality
Old quarries near the village of Tellancourt and road Ruette-Tellancourt, close to the French border.
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 Longwy Formation, 01/01/2001. National Commission for Stratigraphy Belgium. http://ncs.naturalsciences.be/lithostratigraphy/Longwy-Formation
