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

Summary, in English

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.

• Författare: Oliver Lehnert; Guido Meinhold; Rongchang Wu; Mikael Calner; Michael M. Joachimski
• Avdelning/ar: Berggrundsgeologi
• Publiceringsår: 2014
• Språk: Engelska
• Sidor: 277-286
• Publikation/Tidskrift/Serie: Estonian Journal of Earth Sciences
• Volym: 63
• Issue: 4
• Länkar: http://dx.doi.org/10.3176/earth.2014.31
• Dokumenttyp: Artikel i tidskrift
• Förlag: Estonian Academy Publishers
• Ämne: Geology
• Nyckelord: Sweden; Siljan impact structure; Ordovician; carbon isotope; stratigraphy; MDICE; GICE; Kope
• Aktiv: Published
• ISBN/ISSN/Övrigt: ISSN: 1736-7557