Åsstranda Member (Åsstrandleddet)
(Harland 1980)
Skien-Langesund: Åsstranda (Harland 1980, Fig. 6) (NL 372 510)
Main Lithologies. Limestone and quartz siltstone.
Definition. The Åsstranda Member is restricted to the northern part of Skien-Langesund. Its lower part passes laterally into the Bunes Member, its upper part into the Langesundstangen Member except in the very north where it passes into the Skavråker Member (see Fig. 18). Its base lies in a transition from coarse bioclastic limestones into pale calcilutites and the member is characterised by massive and laminated calcilutites and laminated quartz siltstones (Harland 1980, Fig. 6). It is 24m thick in its type development but wedges out southwards.
Fauna. With the exception of echinoderm, mollusc, brachiopod and bryozoan bioclasts the member is reported to be unfossiliferous.
(From Owen et al., 1990: The Ordovician Successions of the Oslo Region, Norway. NGU Special Publication 4. Figs. refer to the printed version.