The information on this page is a summary description.
The full formal description is available here: Hautrage Flints Formation
| Abbreviation | HTR |
| Parent unit | Chalk group |
| Child unit | |
| Lithological description | Chalky marls or coarse-grained chalks, slightly glauconitic, with numerous and voluminous irregular brown-black flints. These flints often contain numerous, small (mm size), white sponge spicules. |
| Age | Late Turonian on the basis of Micraster leskei. |
| Thickness | 3 to 25 m near Saint-Vaast in the eastern part of the basin. |
| Area of occurrence | Mons Basin. Towards the west in France the equivalent is the “Craie à cornus”. Near the northern border of the Mons basin between Ghlin and Saint-Denis the Hautrage Formation is strongly silicified: see Saint-Denis Silicite Formation. |
| Type locality | In the railway cutting at Hautrage (see Robaszynski, 1975, p. 36) . |
| Alternative names | |
| Authors | Robaszynski, F., Dhondt, A.V. & Jagt, J.W.M. |
| Date | 01/01/2001 |
| Cite as | Robaszynski, F., Dhondt, A.V. & Jagt, J.W.M., 2001. The Hautrage Flints Formation, 01/01/2001. National Commission for Stratigraphy Belgium. http://ncs.naturalsciences.be/lithostratigraphy/Hautrage-Flints-Formation |
