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.

• Author: Oliver Lehnert; Guido Meinhold; Rongchang Wu; Mikael Calner; Michael M. Joachimski
• Department/s: Lithosphere and Biosphere Science
• Publishing year: 2014
• Language: English
• Pages: 277-286
• Publication/Series: Estonian Journal of Earth Sciences
• Volume: 63
• Issue: 4
• Links: http://dx.doi.org/10.3176/earth.2014.31
• Document type: Journal article
• Publisher: Estonian Academy Publishers
• Topic: Geology
• Keywords: Sweden; Siljan impact structure; Ordovician; carbon isotope; stratigraphy; MDICE; GICE; Kope
• Status: Published
• ISBN/ISSN/Other: ISSN: 1736-7557