The information on this page is a summary description.
The full formal description is available here: La Roche Formation
| Abbreviation | LAR |
| Parent unit | none |
| Child units | |
| Lithological description | Dark grey or bluish slate, siltstone and shale, with few bluish sandstone intercalations. |
| Age | Pragian |
| Thickness | From 215 m south of Couvin to 800 m along the southern flank of the La Roche Syncline. |
| Area of occurrence | Southern and south-eastern limbs of the Dinant Synclinorium from the French border to Amonines. Northwards, the typical facies tend to disappear and there is no trace of them anymore south of the Xhoris Fault (Marion & Barchy, in press, a, b). |
| Type locality | Sections along the road N833 from La Roche-en-Ardenne to Hotton (Stainier, 1994). |
| Alternative names | Facies de La Roche |
| Authors | Denayer, J. & Mottequin, B. |
| Date | 23/09/2025 |
| Cite as | Denayer, J. & Mottequin, B., 2025. The La Roche Formation, 23/09/2025. National Commission for Stratigraphy Belgium. https://ncs.naturalsciences.be/lithostratigraphy/La-Roche-Formation |
| Additional information |
