Serpulite Member

Code
SKWFF
Status
Formal (NAM & RGD 1980). Amended (Van Adrichem Boogaert & Kouwe 1993).
Lithological description

Bluish grey, limestone-rich claystone interval which is characterised by the dominant occurrence of serpulid fragments. The frequently intercalated microcoquina beds and laminae contain abundant pelecypod and ostracod remains. Anhydritic beds and nodules are abundant.

Depositional setting

Lacustrine basin-margin to marginal-marine sub-basin (lagoonal) setting. With low input of clastic material.

Definition of lower boundary

Usually conformably overlies the Weiteveen Upper Marl Member, but locally unconformably overlies the Altena Group or older sediments.

Definition of upper boundary

Marked by characteristic wire-line log marker, corresponding to conspicuous claystone break in the clayey-marly interval with limestones.

Thickness indication
Up to 120 m.
Geographical distribution
Regional correlation
UK: ?; GER: Serpulit (Münder Formation); BEL: -.
Age
Berriasian.
Holostratotype
Depth (thickness) AH:
1230 - 1330 m (100 m)
Hypostratotype
Depth (thickness) AH:
1046 - 1087 m (41 m)
Hypostratotype
Depth (thickness) AH:
1697 - 1708 m (11 m)
Hypostratotype
Depth (thickness) AH:
1174 - 1218 m (44 m)
Hypostratotype
Depth (thickness) AH:
295 to 374 m (79 m)
Origin of name
Named after the dominantly occurring serpulite fragments.
Previous name(s)
None.
Reviewed by (date)
Sander Houben (2017).
References
NAM & RGD 1980. Stratigraphic nomenclature of The Netherlands. Verhandelingen van het Koninklijk Nederlands Geologisch Mijnbouwkundig Genootschap 32, 77 p.
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..
Cite as
TNO-GDN ([YEAR]). Serpulite Member. In: Stratigraphic Nomenclature of the Netherlands, TNO – Geological Survey of the Netherlands. Accessed on [DATE] from http://www.dinoloket.nl/en/stratigraphic-nomenclature/serpulite-member.