
Mikael Calner
Professor

Conodont biostratigraphy and carbon isotope stratigraphy of the Middle Ordovician (Darriwilian) Komstad Limestone, southern Sweden
Författare
Summary, in English
The Komstad Limestone forms a distal part of the widespread ‘orthoceratite limestone’ of the Baltoscandian continent. In this paper, we present an integrated conodont biostratigraphy and carbon isotope stratigraphy for a major part of this formation and address its significance for evaluating Middle Ordovician correlation and overall stratigraphy. Four conodont zones are distinguished, including the Lenodus antivariabilis Zone, Lenodus variabilis Zone, the Yangtzeplacognathus crassus Zone, and the Eoplacognathus pseudoplanus Zone. Carbon isotopes have previously not been published from the Komstad Limestone. The data herein show that carbonate strata may retain a comprehensive pristine δ13C signal despite relatively strong thermal influence during diagenesis (Conodont Color Alteration Index 4–5).
Avdelning/ar
- Geologiska institutionen
Publiceringsår
2018-02-27
Språk
Engelska
Sidor
44-54
Publikation/Tidskrift/Serie
GFF
Volym
140
Issue
1
Dokumenttyp
Artikel i tidskrift
Förlag
Taylor & Francis
Ämne
- Geology
Nyckelord
- carbon isotope stratigraphy
- conodont biostratigraphy
- Darriwilian
- Komstad Limestone
- Middle Ordovician
- Sweden
Aktiv
Published
ISBN/ISSN/Övrigt
- ISSN: 1103-5897