Carboniferous Limestone Group

Formal (Van Adrichem Boogaert & Kouwe 1994).
Lithological description

Group of mainly light-grey, brown and black carbonates. Variable number of claystones can be intercalated. In places bedded cherts occur.

Depositional setting

Marine deposit formed on a carbonate platform and its basinward slope.

Definition of lower boundary

Underlain by clastic sediments of the Banjaard group.

Definition of upper boundary

Overlain by claystones of the Limburg Group.

Thickness indication
Up to 768 m in LTG-01.
Geographical distribution
Regional correlation
UK: Carboniferous Limestone Group; GER: Kohlenkalk Group; BEL: Carboniferous Limestone Group.
Tournaisian - Visean.
Depth (thickness) AH:
1883 - 2836 m (953 m)
Depth (thickness) AH:
2318 - 2392 m (74 m)
Origin of name
Name derived from the British stratigraphic nomenclature where it is used for the massive Lower Carboniferous carbonate deposits of northwestern Europe.
Previous name(s)
Reviewed by (date)
Tom van Hoof (2017).
Van Adrichem Boogaert, H.A. & Kouwe, W.F.P. 1994. Stratigraphic nomenclature of The Netherlands; revision and update by RGD and NOGEPA, Section B, Devonian and Dinantian. Mededelingen Rijks Geologische Dienst, 50, 1-20.
Cite as
TNO-GDN ([YEAR]). Carboniferous Limestone Group. In: Stratigraphic Nomenclature of the Netherlands, TNO – Geological Survey of the Netherlands. Accessed on [DATE] from