The information on this page is a summary description.
The full formal description is available here: Montfort Member
| Abbreviation | MTF |
| Parent unit | Condroz Formation |
| Child units | Bon-Mariage Facies, Gombe Facies, Barse Facies, Rivage Facies, Citadelle de Huy Facies |
| Lithological description | Rhythmic and gradded often thick beds of quartzitic arkosic sandstone, with laminar and cross stratifications, load casts, channels, ripple marks, bioturbations, etc. |
| Age | Late Famennian |
| Thickness | 55-65 m in the type area |
| Area of occurrence | Northern limb of the Dinant Synclinorium, HaineSambreMeuse Overturned Thrust sheets and Vesdre area. |
| Type locality | Section in the disused Montfort quarry in the Ourthe River valley, the Facies have their own type localities |
| Alternative names | Grès de Montfort |
| Authors | Mottequin, B., Denayer, J., Delcambre, B., Marion, J.-M. & Poty, E. |
| Date | 23/09/2025 |
| Cite as | Mottequin, B., Denayer, J., Delcambre, B., Marion, J.-M. & Poty, E., 2025. The Montfort Member, 23/09/2025. National Commission for Stratigraphy Belgium. https://ncs.naturalsciences.be/lithostratigraphy/Montfort-Member |
| Additional information |
