The information on this page is a summary description.
The full formal description is available here: Criptia Group
Abbreviation
CRI
Parent unit
Child units
Lithological description
A group for a thick unit of shale and silty shale, homogeneous with various colours (greenish, grey, ochre) and a stratification difficult to distinguish. In the group a green to greenish grey soft shale unit can be differentiated. The Génicot Fm is supposed to be the underlying unit. The covering unit is a more silty and darker coloured unnamed shale unit.
Age
Without fossils, a late Llandovery or possibly Wenlock to early Ludlow age is tentatively postulated.
Thickness
Unknown, tentatively estimated at several hundred meters.
Area of occurrence
Puagne-Sart-Eustache area; in the southern structural unit, western part of the Condroz inlier (Puagne point structural area).
Type locality
Not defined yet; area between the city of Fosses and the village Sart-Eustache.
Alternative names
The unit was already described as “Schistes de Criptia” by Michot (1928).
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 Criptia Group, 01/01/2001. National Commission for Stratigraphy Belgium. https://ncs.naturalsciences.be/lithostratigraphy/Criptia-Group
