δ13C chemostratigraphy in the upper Tremadocian through lower Katian (Ordovician) carbonate succession of the Siljan district, central Sweden; pp. 277–286
2014; Estonian Academy Publishers; Volume: 63; Issue: 4 Linguagem: Inglês
10.3176/earth.2014.31
ISSN1736-7913
AutoresM. Calner, Michael M. Joachimski, Oliver Lehnert, Guido Meinhold, R Wu,
Tópico(s)Geological and Geochemical Analysis
ResumoBased on δ 13 C 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.
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