Environmental conditions during the late Oligocene transgression in the North Alpine Foreland Basin (Eferding Formation, Egerian) – A multidisciplinary approach
- Author(s)
- Thomas Filek, Mathias Harzhauser, Matthias Kranner, Iris Feichtinger, Jennifer Zwicker, Daniel Smrzka, Oleg Mandic, Andreas Kroh, Jörn Peckmann, Björn Berning, Alfred Uchman, Bettina Reichenbacher, Felix Hofmayer, Reinhard Rötzel, Jürgen Pollerspöck
- Abstract
The North Alpine Foreland Basin (NAFB) comprises one of the most complete sedimentary records of the
Oligocene and Miocene, driven by global sea-level fluctuations, vast sedimentary influx and tectonic movement.
The locality of Unterrudling near Eferding (Upper Austria) exposes the largest succession of sedimentary deposits
from the late Oligocene in the eastern NAFB. Additionally, this section shows the facies transition from the
shallow-water Linz-Melk Formation to the deep-water Eferding Formation. In this work, the fossil fauna and flora
of the Eferding Formation as well as its lithology are re-evaluated using a multidisciplinary approach to gain new
insights into the palaeoenvironment, palaeoclimate, and palaeoecology. A transgressive sequence is documented
using sedimentological and ichnological data. Furthermore, a correlation to the late Chattian transgressive Ch-3
sequence is suggested. The impact of rising sea-level on marine biota is shown in detail by analysing various
groups (Bivalvia, Echinodermata, Anthozoa, Foraminifera, Chondrichthyes and Osteichthyes), with several
newly reported species for the Eferding Formation. Moreover, washed in plant material was analysed for the
interpretation of the terrestrial climate indicating mainly humid subtropical conditions. Finally, the presence of
phosphatic nodules indicates eutrophication on the shelf environment and the possibility of upwelling currents.- Organisation(s)
- Center for Science Education Research (AECCs), Department of Palaeontology, Department of Geology, Department of Mineralogy and Crystallography
- External organisation(s)
- Naturhistorisches Museum Wien (NHM), Geologische Bundesanstalt, Staatl Nat Wissensch Sammlungen Bayerns, Zool Staatssammlung Munchen, Universität Hamburg, Oberösterreichisches Landesmuseum, Jagiellonian University in Krakow, Ludwig-Maximilians-Universität München
- Journal
- Palaeogeography, Palaeoclimatology, Palaeoecology
- Volume
- 580
- Pages
- 1-26
- No. of pages
- 26
- ISSN
- 0031-0182
- DOI
- https://doi.org/10.1016/j.palaeo.2021.110527
- Publication date
- 07-2021
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 105118 Palaeontology
- Keywords
- ASJC Scopus subject areas
- Earth-Surface Processes, Ecology, Evolution, Behavior and Systematics, Oceanography, Palaeontology
- Sustainable Development Goals
- SDG 14 - Life Below Water, SDG 13 - Climate Action
- Portal url
- https://ucris.univie.ac.at/portal/en/publications/environmental-conditions-during-the-late-oligocene-transgression-in-the-north-alpine-foreland-basin-eferding-formation-egerian--a-multidisciplinary-approach(a4aa95e3-abd6-4d15-af41-576b66aeb647).html