A Preliminary Report on a Boring through Middle Ordovician Strata in Western Scania (Sweden)

Abstract

A drilling core from Koängen, situated in the Fågelsång district, Scania, representing a section through the uppermost strata of the subzone of Climacograptus haddingi, the zone of Nemagraptus gracilis, and the lowermost part of the zone of Diplograptus multidens, is described. The portion of the core so far treated demonstrates the zone of N. gracilis of the Fågelsång district to be overlain by shales the lower part of which contains a graptolite fauna belonging to the zone of D. multidens. It also shows that these layers, following immediately above the zone of N. gracilis, can not be identical with those of the zone of Dicranograptus clingani in south-eastern Scania, and further that the zone of Diplograptus molestus ought not to be maintained any longer in the Fågelsång district.