The information on this page is a summary description.
The full formal description is available here: Aisemont Formation
| Abbreviation | AIS |
| Parent unit | none |
| Child units | Tchafornis Member, Mallieue Member, Fond des Cris Member |
| Lithological description | A first unit of bioclastic limestone, rich in corals or nodular, overlain with grey fossiliferous shales and topped by a second unit of bioclastic limestone with oncoids and corals, locally dolomitic. |
| Age | Late Frasnian |
| Thickness | Variable, 20-30 m in the type area. |
| Area of occurrence | Brabant Parautochthon, Haine-Sambre-Meuse Overturned Thrust sheets, Vesdre area, Theux Window, Campine Basin and northern limb of the Dinant Synclinorium between Lesves and Remouchamps. |
| Type locality | The stratotype of the Aisemont Formation is located in the northern part of the former Moreau quarry at Aisemont has been infilled. The Mallieue section (road and disused quarry) exposes the entire formation and can be used as neostratotype. |
| Alternative names | Premier biostrome à Phillipsastrea, Schistes intermédiaires and second biostrome à Phillipsastrea. |
| 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 Aisemont Formation, 23/09/2025. National Commission for Stratigraphy Belgium. https://ncs.naturalsciences.be/lithostratigraphy/Aisemont-Formation |
| Additional information |
