Code
ORPA
Status
Formal (Van Adrichem Boogaert & Kouwe 1994).
Lithologische beschrijving
Grey and green-grey, silty claystones containing a few thin sandstone beds and some thin, brown, intercalated dolomite beds.
Afzettingsmilieu
Floodplain and limnic depositional environment.
Definitie ondergrens
Overlies the Caledonian basement unconformably.
Definitie bovengrens
Overlain conformably by the sandstone-dominated Buchan Formation.
Dikte indicatie
Up to 296 m.
Geografische verbreiding
Regionale correlatie
UK: ?; GER: ?; BEL: ?
Ouderdom
Givetian - Frasnian.
Holostratotype
Well:
Depth (thickness) AH:
2717 - 3013 m (296 m)
Oorsprong naam
Named after the South West Patch, a shoal in the central North Sea.
Vorige benaming(en)
None.
Gereviewed door (datum)
Tom van Hooff (2017).
Referenties
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]). Patch Formation. In: Stratigraphic Nomenclature of the Netherlands, TNO – Geological Survey of the Netherlands. Accessed on [DATE] from https://www.dinoloket.nl/en/stratigraphic-nomenclature/patch-formation.