The information on this page is a summary description.
The full formal description is available here: Sainte-Marie Formation
| Abbreviation | STM |
| Parent unit | none |
| Child units | |
| Lithological description | Dark grey and bluish, usually laminar, siltstone, slate and sandy shale with frequent porphyroblasts of biotite, magnetite, garnet and ilmenite. |
| Age | Most probably late Lochkovian |
| Thickness | 1400-2000 metres |
| Area of occurrence | Ardenne Anticlinorium east of the Mogimont Fault near Vivy and north-eastwards up to the Vencimont Fault near Sainte-Ode. |
| Type locality | There is no continuous section exposing the Sainte-Marie Formation, but the typical facies can be observed in the small cliff below the Notre-Dame de Lorette Chapel, north of Remagne. |
| Alternative names | Schistes de Sainte-Marie |
| Authors | Denayer, J. & Mottequin, B. |
| Date | 23/09/2025 |
| Cite as | Denayer, J. & Mottequin, B., 2025. The Sainte-Marie Formation, 23/09/2025. National Commission for Stratigraphy Belgium. https://ncs.naturalsciences.be/lithostratigraphy/Sainte-Marie-Formation |
| Additional information |
