The information on this page is a summary description.
The full formal description is available here: Thulin Marls Formation
| Abbreviation | THU |
| Parent unit | Chalk group |
| Child unit | |
| Lithological description | Chalky marls, yellowish white at outcrop, green when fresh; occasionally chalk banks of a fewdecimetresthickness contain a denser sediment. The marls occasionally contain a coarser, glauconitic, diachronous level, with small black shiny pebbles, a few mm to a few cm in size: this is the Maubeuge Glauconite Member or “Tourtia de Maubeuge” (Robaszynski, 1971b, 1975 a,b). |
| Age | Middle Turonian on the basis of Terebratulina rigida, Coscinophragma irregularis, Helvetoglobotruncana helvetica, Marginotruncana marginata… |
| Thickness | From a few m up to 20 m. |
| Area of occurrence | Mons Basin and northern France. |
| Type locality | Borehole Jardiné, at Thulin, between 156.5 and 140.5 m (see Robaszynski, 1975b, p. 35). |
| 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 Thulin Marls Formation, 01/01/2001. National Commission for Stratigraphy Belgium. http://ncs.naturalsciences.be/lithostratigraphy/Thulin-Marls-Formation |
