The information on this page is a summary description.
The full formal description is available here: Vieux-Moulains de Thilay Formation
Abbreviation
VMT
Parent unit
Child units
Lithological description
Dark and light grey laminated siltstone and slate, “quartzophyllades zonaires” from the literature, with black slate levels.
Age
Outcrops west of Vieux-Moulins de Thilay are dated with acritarchs as Arenig to Llanvirn (Early to Middle Ordovician) by Roche et al. (1986). New evidence on the range of the genus Frankea and the species F. sartbernardensis (Servais, 1993; Brocke et al., 1995) allow to restrict the age of the unit from late Arenig to Llanvirn (Mid Ordovician).
Thickness
Unknown.
Area of occurrence
In the core of a fold in the eastern part of the massif at Vieux-Moulins de Thilay, Franc-Bois de Willerzie, les Hubiets (Geukens, 1981; Roche et al., 1986).
Type locality
Not yet defined; type area in the outcrops north of the hamlet of Vieux-Moulins de Thilay, close to Croix Scaille.
Alternative names
Authors
Verniers, J., Herbosch, A., Vanguestaine, M., Geukes, F., Delcambre, B., Pingot, J.-L., Belanger, I., Hennebert, M., Debacker, T., Sintubin, M. & De Vos, W.
Date
01/01/2001
Cite as
Verniers, J., Herbosch, A., Vanguestaine, M., Geukes, F., Delcambre, B., Pingot, J.-L., Belanger, I., Hennebert, M., Debacker, T., Sintubin, M. & De Vos, W., 2001. The Vieux-Moulains de Thilay Formation, 01/01/2001. National Commission for Stratigraphy Belgium. https://ncs.naturalsciences.be/lithostratigraphy/Vieux-Moulains-de-Thilay-Formation
