Upper Jurassic and Lower Cretaceous geology of Sweden

Publisher Website
Google Scholar
Abstract
New data are given on the Swedish Upper Jurassic and Lower Cretaceous sedimentary sequences, including unpublished subsurface documentation from the hydrocarbon prospecting. A brief review is given on the Swedish Upper Jurassic and Lower Cretaceous sedimentary deposits, which are restricted to the southwestern margin of the East European Platform. Their distribution, depositional environments, lithology and stratigraphical representation are discussed. In terms of chronostratigraphy, foraminifers and ostracods establish the presence of the Oxfordian, Kimmeridgian and Portlandian Stages of the Upper Jurassic, and the Valanginian, Hauterivian, Barremian, Aptian and Albian Stages in the marine Lower Cretaceous. A stratigraphy of Jurassic-Cretaceous transitional beds, which probably include Portlandian, Berriasian and Valanginian non-marine strata, has yet to be established; consequently, the Jurassic-Cretaceous boundary in Sweden is still undefined. Swedish Upper Jurassic lithostratigraphical units are defined; a corresponding subdivision of the Lower Cretaceous remains to be established.

This publication has 5 references indexed in Scilit: