Formal (Van Adrichem Boogaert & Kouwe 1993).
Sequence of white to light-grey, fine- to medium-grained sandstones alternating with siltstones and claystones, and traces of coaly matter.
Lower-coastal-plain to fluvial-plain setting, with marine influences.
Definition of lower boundary
Conformably overlies claystones of the Fourteens Claystone Member.
Definition of upper boundary
Conformably overlain by the claystones of the Driehuis Mottled Claystone Member, or it is unconformably overlain by younger sediments.
UK: Humber Group; GER: ?; BEL: -.
late Tithonian - early Berriasian.
Origin of name
Named after the town of Santpoort, in the south of the Dutch province of Noord-Holland.
Van Adrichem Boogaert, H.A. & Kouwe, W.F.P. 1993. Stratigraphic nomenclature of The Netherlands; revision and update by RGD and NOGEPA, Section G, Upper Jurassic and Lower Cretaceous. Mededelingen Rijks Geologische Dienst, 50, 1-80..
TNO-GDN ([YEAR]). Santpoort Member. In: Stratigraphic Nomenclature of the Netherlands, TNO – Geological Survey of the Netherlands. Accessed on [DATE] from https://www.dinoloket.nl/en/stratigraphic-nomenclature/santpoort-member.