The position of the Rupelian/Chattian boundary in the southern Upper Rhine Graben based on new records of microfossils
- Pirkenseer, Claudius Unit Earth Sciences, Université de Fribourg, Switzerland
- Berger, Jean-Pierre Unit Earth Sciences, Université de Fribourg, Switzerland
- Reichenbacher, Bettina Department for Earth and Environmental Sciences, Paläontologie und Geobiologie, Ludwig-Maximilians-Universität, Munich, Germany
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01.11.2013
Published in:
- Swiss Journal of Geosciences. - 2013, vol. 106, no. 2, p. 291–301
English
This study analyses the regressive phase of the marine Froidefontaine Subgroup and the subsequent fluvio-lacustrine Niederroedern formation in the southern Upper Rhine Graben during the Late Rupelian and the position of the Rupelian/Chattian boundary. The study is based on the sedimentary record and several microfossil groups from two boreholes, with a focus on new records of fish otoliths, Bolboforma and Charophyta. The biostratigraphic evaluation of these groups provides evidence for a position of the Rupelian/Chattian boundary within the upper Niederroedern Formation. This is contrary to the results from a previous sedimentological approach, which places the boundary at the base of the Niederroedern Formation. The fish fauna indicates a biogeographic relation to southern France, the Molasse Basin of Switzerland and southern Germany.
- Faculty
- Faculté des sciences et de médecine
- Department
- Département de Géosciences
- Language
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- English
- Classification
- Palaeontology
- License
- License undefined
- Identifiers
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- RERO DOC 209322
- DOI 10.1007/s00015-013-0146-4
- Persistent URL
- https://folia.unifr.ch/unifr/documents/303441
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