delta C-13 chemostratigraphy in the upper Tremadocian through lower Katian (Ordovician) carbonate succession of the Siljan district, central Sweden

Research output: Contribution to journalArticle


Based on delta C-13 data from two drillcores recovered from the Siljan district, we present a first continuous carbon isotope record of the upper Tremadocian-lower Katian limestone succession of central Sweden. New names for some isotopic carbon excursions from the Cambrian-Ordovician boundary through the basal Darriwilian are introduced. The Mora 001 core from the western part of the Siljan impact structure ranges through the Lower-Middle Ordovician, whereas the Solberga 1 core from its eastern part ranges through the Middle-lower Upper Ordovician. Upper Tremadocian and Floian units are extremely condensed and include extensive stratigraphic gaps. Multiple hardgrounds, sometimes with minor karstic overprint, imply recurrent periods of erosion and/or non-deposition. Like in other parts of Sweden, the Dapingian and Darriwilian succession is characterized by a relatively complete sedimentary record and low sedimentation rates.


  • Oliver Lehnert
  • Guido Meinhold
  • Rongchang Wu
  • Mikael Calner
  • Michael M. Joachimski
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Geology


  • Sweden, Siljan impact structure, Ordovician, carbon isotope, stratigraphy, MDICE, GICE, Kope
Original languageEnglish
Pages (from-to)277-286
JournalEstonian Journal of Earth Sciences
Issue number4
Publication statusPublished - 2014
Publication categoryResearch