Formal (Van Adrichem Boogaert & Kouwe 1995).
Succession of largely orange- or brownish-red, but also grey or variegated mudstones with some intercalated sandstone beds, mostly without coal seams.
Distal flood-plain deposition with sheet floods and small-scale fluvial channels.
Definition of lower boundary
Definition of upper boundary
The upper Ketch Member of the Schooner Formation and the Brig Formation of Cameron (1993) are partial lithostratigraphic counterparts in the UK offshore.
UK: upper Ketch Member and Brig Formation; GER: Ruhr-Gruppe; BEL: Strijen Formation and Neeroeteren Formation.
Origin of name
Named after the Hunze river, which runs through the province of Drenthe, where deposits of this subgroup are common in the subsurface.
Barren Measures (DCCR) (NAM 1980).
Cameron, T.D.J. 1993. Carboniferous and Devonian of the Southern North Sea. ln: Knox. R.W.0'8. & Cordey, W.G. (eds.) Lithostratigraphic nomenclature of the UK North Sea 5, British Geological Survey, Nottingham, 94 p.
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]). Hunze Subgroup. In: Stratigraphic Nomenclature of the Netherlands, TNO – Geological Survey of the Netherlands. Accessed on [DATE] from http://www.dinoloket.nl/en/stratigraphic-nomenclature/hunze-subgroup.