Formal (Munsterman et al. 2012).
Bioturbated silty to sandy claystones. Locally glauconitic, pyritic and carbonate streaks. GR-logs show fining and coarsening upward trends. The top demonstrates coarsening upward trend in GR-log pattern.
Offshore- shelf environment.
Definition of lower boundary
Diachronously overlies the Terschelling Sandstone Member; the base is younger in the southern part of the Terschelling Basin. Contact with the Terschelling Sandstone Member is conformable and marked by a downward drop in GR-log readings (bell-shape).
Definition of upper boundary
Marked by a funnel-shaped GR-log pattern, resulting from the upward decreasing clay content. Boundary with the Scruff Spiculite Member.
UK: Humber Group; GER: ?; BEL: -.
Origin of name
Named after the village Lies on the Wadden island Terschelling.
Munsterman, D.K., Verreussel, R.M.C.H., Mijnlieff, H.F., Witmans, N., Kerstholt-Boegehold, S. & Abbink, O.A. 2012. Revision and update of the Callovian-Ryazanian Stratigraphic Nomenclature in the northern Dutch Offshore, i.e. Central Graben Subgroup and Scruff Group. Netherlands Journal of Geosciences-Geologie en Mijnbouw, 91 (4), 555-590.
TNO-GDN ([YEAR]). Lies Member. In: Stratigraphic Nomenclature of the Netherlands, TNO – Geological Survey of the Netherlands. Accessed on [DATE] from https://www.dinoloket.nl/en/stratigraphic-nomenclature/lies-member.