Weiteveen Lower Evaporite Member

SKWFB

Formal (NAM & RGD 1980). Amended (Van Adrichem Boogaert & Kouwe 1993).

Alternation of dolomitic and/or anhydritic claystones, anhydrites, halites and limestones. Over synsedimentary highs, the halite layers thin and disappear, accompanied by a marked decrease of the anhydrite content.

Highly-restricted lacustrine basin-margin to marginal-marine sub-basin setting. Evaporites can be attributed to a combination of estuarine basin circulation and reworking of outcropping Triassic and Zechstein evaporites.

Conformably rests on the variegated Weiteveen Basal Clastic Member, or unconformably overlies the Altena Group or older sediments. The base is placed at the lowermost carbonate or anhydrite bed.

Placed at a marked increase in GR-log readings and a drop in resistivity log readings, caused by the higher clay content of the Weiteveen Lower Marl Member.

Generally less than 60 m and up to 96 m in SCH-197.

UK: ?; GER: Münder Formation; BEL: -.

late Tithonian.

Named after the village of Weiteveen, municipality of Schoonebeek, in the southeastern part of the province of Drente.

None.

Sander Houben (2017).

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..