The information on this page is a summary description.
The full formal description is available here: Froide Fontaine Formation
Abbreviation
FRF
Parent unit
Child units
Lithological description
Cleaved mudstone and siltstone, of greenish grey to dark grey unweathered colours, with additionally decimetric beds of obliquely stratified rather coarse sandstone; often micaceous, a typical feature of the formation. Clearly more sandy (up to half sandstone and half slate) than the other two Silurian units of the Senne valley.
Age
Middle Wenlock to lower Ludlow based on chitinozoans (Verniers, pers. comm. in Doremus & Hennebert, 1995).
Thickness
Between 160 and 270 m.
Area of occurrence
Brabant Massif, outcrop area: Senne and Sennette valleys.
Type locality
Senne valley, between the village of Horrues and its hamlet Froide Fontaine, in a road section at km 22.5 of the road N55, Enghien-Soignies.
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 Froide Fontaine Formation, 01/01/2001. National Commission for Stratigraphy Belgium. https://ncs.naturalsciences.be/lithostratigraphy/Froide-Fontaine-Formation
