Publications

Filter by author, year or title word:
... or show all publications: newest first / in alphabetic order

Pouille et al., 2013

Pouille, L., Delabroye, A., Vandenbroucke, T. R. A., Calner, M., Lehnert, O., Vecoli, M., Danelian, T. 2013. Chitinozoan biostratigraphy across the Katian (Late Ordovician) GICE event in the Borenshult-1 drillcore (Sweden). Review of Palaeobotany and Palynology 198, 134-144. | DOI | DETAILS

Show additional data in Estonian Geocollections Portal
ID3904
ReferencePouille et al., 2013
AuthorPouille, L., Delabroye, A., Vandenbroucke, T. R. A., Calner, M., Lehnert, O., Vecoli, M., Danelian, T.
Year2013
TitleChitinozoan biostratigraphy across the Katian (Late Ordovician) GICE event in the Borenshult-1 drillcore (Sweden)
JournalReview of Palaeobotany and Palynology
Volume198
pgs.134-144
Source typearticle in journal
LanguageEnglish
DOI10.1016/j.revpalbo.2013.05.007
Abstract

The Late Ordovician is a period of major global environmental changes. Its understanding requires an integrated stratigraphical approach. Here, chitinozoan assemblages are described from the Borenshult-1 drillcore from Motala (Sweden) and related to stable carbon isotope event stratigraphy. Fifty-six rock samples, corresponding to a stratigraphic interval ranging from the upper Sandbian to Llandovery, were dissolved and analysed for chitinozoans. This stratigraphic interval covers the Sandbian to Llandovery and includes, in ascending order, the Freberga, Slandrom, Fjacka, Jonstorp, Loka and Motala formations. This study resulted in identification of two biozones the Spinachitina cervicomis Biozone (lower part of the Freberga Formation), as well as its Angochitina multiplex Subzone, and the Fungochitina spinifera Biozone (upper part of the Freberga Formation). The spinifera Biozone is characterized by the presence of Lagenochitina baltica, whereas the cervicomis Biozone is defined by the presence of its index species. Despite a low recovery of chitinozoans from Borenshult-1, we suggest that the Guttenberg Isotopic Carbon Excursion (GICE), as observed in the Borenshult-1 drillcore, correlates with the S. cervicomis Biozone. This fits well with chitinozoan and carbon isotope data from the Fjacka section in central Sweden (Dalarna, Siljan region) and from the Smedsby Gard drillcore (Ostergotland). The A. multiplex Subzone which is recognised in the Borenshult-1 and nearby Smedsby Gard drillcores, predates the GICE at both localities.