Code
ROSLA
Status
Informal (RGD 1993).
Lithologische beschrijving
Light grey sandstone. The moderately rounded grains of the sandstones vary in grainsize from coarse to fine.
Afzettingsmilieu
Fluvial and aeolian (?).
Definitie ondergrens
The contact with the underlying Ten Boer Claystone is very sharp.
Definitie bovengrens
Sharp contact with the Zechstein Group.
Dikte indicatie
7 m (in well VLR-01)
Geografische verbreiding
Locally, in central Friesland and northeastern Drenthe, . The member only occurs locally in the northeast of the map sheet area. Towards the north, the east and the west this member pinches out completely.
Regionale correlatie
UK: not present; GER: not present; BEL: not present.
Ouderdom
Wuchiapingian.
Type section
Well:
Not yet determined.
Depth (thickness) AH:
Not yet determined.
Oorsprong naam
Named after the village of Akkrum in the province of Friesland.
Vorige benaming(en)
None.
Gereviewed door (datum)
Geert-Jan Vis (2019).
Referenties
RGD 1993. Geological Atlas of the Subsurface of The Netherlands, Explanation to map sheet V: Sneek-Zwolle, Geological Survey of The Netherlands RGD, Haarlem, 126 pp. https://www.nlog.nl/sites/default/files/explanation_kbv.pdf
Cite as
TNO-GDN ([YEAR]). Akkrum Sandstone member. In: Stratigraphic Nomenclature of the Netherlands, TNO – Geological Survey of the Netherlands. Accessed on [DATE] from https://www.dinoloket.nl/en/stratigraphic-nomenclature/akkrum-sandstone-member.