The information on this page is a summary description.
The full formal description is available here: Rivière Formation
| Abbreviation | RIV |
| Parent unit | none |
| Child units | Rouillon Member, Roisin Member, Claminforge Member |
| Lithological description | Heterolithic formation made of conglomerate, sandstone, siltstone, shale and impure limestone, reddish to greenish. |
| Age | Eifelian |
| Thickness | 120 m in the type area, rapidly decreasing eastwards. |
| Area of occurrence | Northern limb of the Dinant Synclinorium, fully developed west of the Samson River valley. |
| Type locality | No good section exposes the entire formation. The Rouillon Member is exposed along the Namur-Dinant road at Rivière on the left bank of the Meuse River. The stratotype of the Claminforge Member is situated along the disused railway south of Aisemont. |
| Alternative names | Grauwacke de Rouillon, Macigno de Claminforge |
| Authors | Denayer, J., Coen-Aubert, M., Marion, J.-M. & Mottequin, B. |
| Date | 23/09/2025 |
| Cite as | Denayer, J., Coen-Aubert, M., Marion, J.-M. & Mottequin, B., 2025. The Rivière Formation, 23/09/2025. National Commission for Stratigraphy Belgium. https://ncs.naturalsciences.be/lithostratigraphy/Riviere-Formation |
| Additional information |
