Nouvelles Chalk Formation

The information on this page is a summary description.
The full formal description is available here: Nouvelles Chalk Formation

Abbreviation NOU
Parent unit Chalk group
Child unit
Lithological description A pure, massive, soft, very fine-grained white chalk, without flints, except for two to three bands of small flint nodules at the top. There is a gradual transition to the underlying Obourg Fm. At the southern margin of the basin, a prominent hardground may be present in the uppermost part of this formation.
Age Transition between the early and the late Late Campanian; cephalopods: Belemnitella minor I, Bt. woodi, Trachyscaphites spiniger; brachiopods: Magas chitoniformis (= M. pumilus auct.); echinoids: Micraster schroederi, Echinocorys gibba; foraminifers: first Bolivinoides australis (4 – 5 pustules); the majority of fossil taxas already found in the underlying Obourg Fm.
Thickness 20 to 25 m at the margin of the Mons basin, but about 75 m at Beaulieu in a subsidence area of this basin.
Area of occurrence Mons Basin, in outcrops along the margins and in boreholes.
Type locality No stratotype has been designated for the Nouvelles Formation. The Formation outcrops in quarries, especially at Harmignies (section in the C.C.C. quarry studied in Robaszynski & Christensen, 1989).
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 Nouvelles Chalk Formation, 01/01/2001. National Commission for Stratigraphy Belgium. http://ncs.naturalsciences.be/lithostratigraphy/Nouvelles-Chalk-Formation

Lithostratigraphic units

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