The information on this page is a summary description. The full formal description is available here: Gulpen Formation Abbreviation GUL Parent unit Chalk group Child units Zeven Wegen Member, Beutenaken Member, Vijlen Member, Lixhe Member, Lanaye Member Lithological description Five members are distinguished as follows from the base to the top: – Zeven Wegen Member...
The information on this page is a summary description. The full formal description is available here: Houthem Formation Abbreviation Ho Parent unit Chalk group Child units Lithological description This marine entity consists of soft, pale grey to pale yellow, mostly coarse and porous limestone with firm shell layers and limestone knolls. The basal part looks...
The information on this page is a summary description. The full formal description is available here: Zeven Wegen Member Abbreviation Parent unit Gulpen Formation Child units Lithological description White to light grey, fine-grained chalks with basal layer of glauconitic zones, towards the west with randomly distributed black, fine-grained flints with glassy fracture. Age Thickness Up...
The information on this page is a summary description. The full formal description is available here: Beutenaken Member Abbreviation Parent unit Gulpen Formation Child units Lithological description Light greyish to whitish yellow, glauconitic fine- grained clayey and calcareous marls, with glauconite concentration in lowermost metre. Age Thickness Up to about 10 m Area of occurrence...
The information on this page is a summary description. The full formal description is available here: Vijlen Member Abbreviation Parent unit Gulpen Formation Child units Lithological description Yellowish grey, glauconitic fine- grained chalks, with basal glauconite-rich portion, subdivided into seven intervals by P. J. Felder & Bless (1994), each with distinctive fossil assemblages. Age Thickness...
The information on this page is a summary description. The full formal description is available here: Lixhe Member Abbreviation Parent unit Gulpen Formation Child units Lithological description White, fine-grained chalks with irregular dark blue-grey to black flint nodules. West of the River Maas (Meuse) threefold subdivision possible on flint type and abundance. Age Thickness Total...
The information on this page is a summary description. The full formal description is available here: Lanaye Member Abbreviation Parent unit Gulpen Formation Child units Lithological description White, fine-grained chalks with irregular light to dark blue-grey flint nodules; west of River Maas with 23 flint bands, east of river bedding the Lixhe Member is absent...
The information on this page is a summary description. The full formal description is available here: Maastricht Formation Abbreviation MAA Parent unit Chalk group Child units Valkenburg Member, Gronsveld Member, Schiepersberg Member, Emael Member, Nekum Member, Meerssen Member, Lonzéee Member Lithological description Six members are distinguished, as follows from the base to the top: –...
The information on this page is a summary description. The full formal description is available here: Valkenburg Member Abbreviation Parent unit Maastricht Formation Child units Lithological description Poorly indurated, white-yellowish to yellowish grey, fine- to coarse-grained “chalk” with greyish brown flint nodules of varying size in the west. In the east, sequence changes into alternation...
The information on this page is a summary description. The full formal description is available here: Gronsveld Member Abbreviation Parent unit Maastricht Formation Child units Lithological description Poorly indurated, white- yellowish to yellowish grey, fine to coarse-grained “chalk”. In its lower portion, small, light to dark greyish brown flint nodules of varying size and shape,...
