Formal (Van Adrichem Boogaert & Kouwe 1995).
Thick succession of predominantly fine-grained siliciclastic deposits with intercalated coal seams. In the northwestern offshore: succession of coarse-grained, gravelly sandstones.
Deltaic and fluvial-plain sedimentation in a lacustrine basin with a number of marine incursions.
Definition of lower boundary
Definition of upper boundary
UK: Westoe Coal Formation, Caister Coal Formation & Schooner Formation; GER: Ruhr-Gruppe; BEL: Belgian Coal Measures Group.
Origin of name
Named after the Caumerbeek, a small stream running through the town of Heerlen, in the heart of the former Dutch coal-mining district. Several of the coal mines were situated along this stream.
Van Adrichem Boogaert, H.A. & Kouwe, W.F.P. 1995. Stratigraphic nomenclature of The Netherlands, revision and update by RGD and NOGEPA, Section C, Silesian. Mededelingen Rijks Geologische Dienst, 50, 1-40.
TNO-GDN ([YEAR]). Caumer Subgroup. In: Stratigraphic Nomenclature of the Netherlands, TNO – Geological Survey of the Netherlands. Accessed on [DATE] from https://www.dinoloket.nl/en/stratigraphic-nomenclature/caumer-subgroup.