Lieker Member (Liekerleddet)
(Owen 1978)
Previously termed: 4b-γ , Upper Chasmops Limestone).
Main Lithologies. Nodular and bedded limestones with shales.
Basal Stratotype. Hadeland: Lunner Railway Section (Lauritzen 1973 Fig. 2 also Owen 1978 Fig. 7 for top) (NM 877 862).
Definition. The nodules and irregular beds of limestone and interbedded shales of this member constitute the upper 20.6m of the formation in the unit stratotype and extend for only 1.5km west of Lunner (Owen 1978 plate 1). A measured section, faunal log and microfacies analysis of the Lunner railway section was presented by Lauritzen (1973 Figs 2-3, 1975). The Lieker Member succeeds and passes laterally into the Nerby Member and is overlain by shales and limestones of the Lunner Formation.
(From Owen et al., 1990: The Ordovician Successions of the Oslo Region, Norway. NGU Special Publication 4. Figs. refer to the printed version.