5.33.5 Montignies Formation - MOG

Authors: Groessens et al., 1982; Paproth et al., 1983; Conil & Delcourt, 1989; Doremus & Hennebert, 1995a, 1995b.

Description: Dark, argillaceous, cherty and very fossiliferous limestones. The limestone produces a fetid smell when freshly broken.

Stratotype: Exposures in the "Val de la Marquette" at Montignies-lez-Lens.

Area: Western HSA, at least from Péruwelz to Seneffe.

Thickness: 65 m in the type area.

Age: Moliniacian (Groessens et al., 1982).