Per Ahlberg
Professor emeritus
Ordovician graptolite biostratigraphy of the Röstånga-2 drill core (Scania, southern Sweden)
Författare
Summary, in English
The graptolite biostratigraphy of the 116.11-m-long Röstånga-2 drill core from Scania, southern Sweden, includes the Darriwilian (Middle Ordovician) Holmograptus lentus, Nicholsonograptus fasciculatus, Pterograptus elegans, Pseudamplexograptus distichus and Jiangxigraptus vagus biozones, and the lower Sandbian (Upper Ordovician) Nemagraptus gracilis Biozone. The early Darriwilian Komstad Limestone was not reached. The succession includes numerous levels of brecciated rocks and slickensides, suggesting considerable tectonic deformation and possible gaps. The boundary between the Almelund Shale Formation (below) and the Sularp Shale Formation (above) has been identified at 19.55–19.70 m, where the Fågelsång Phosphorite Bed has been identified tentatively in the Jiangxigraptus vagus Biozone. The first specimens of Nemagraptus gracilis appear higher in the succession. The international correlation of the Darriwilian graptolite succession is discussed.
Avdelning/ar
- Berggrundsgeologi
Publiceringsår
2020-05-18
Språk
Engelska
Sidor
206-222
Publikation/Tidskrift/Serie
GFF
Volym
142
Issue
3
Dokumenttyp
Artikel i tidskrift
Förlag
Taylor & Francis
Ämne
- Geology
Nyckelord
- biostratigraphy
- Darriwilian
- graptolites
- Ordovician
- Sandbian
- Scania
- Sweden
Status
Published
ISBN/ISSN/Övrigt
- ISSN: 1103-5897