Abstract
AbstractWell-preserved Carnian (Late Triassic) palynomorphs are rare in Switzerland, despite sediments include one of the important plant fossil localities, Neue Welt near Basel. Modern detailed palynological studies on Triassic palynomorphs in general and especially in the Carnian are scarce, most palynological studies were carried out more than 50 years ago. Nevertheless (Late) Triassic sediments still yield surprises for palynological research. Here, we present the results of the re-study of the famous Belchentunnel samples that were studied and published by Bernhard Scheuring in 1970. The less cheerful result concerns the preservation of slides: more than 60% of the slides are degraded. On the other hand, the restudy of the well-preserved slides showed an unexpected number of algae, acritarchs, and spore taxa not described so far. Especially the spores facilitate the correlation with the well-known biostratigraphic schemes established for the Germanic Basin. The distribution of Porcellispora longdonensis throughout the Belchentunnel succession is especially striking. The acme just below the Schilfsandstein might suggest the presence of ephemeral ponds.
Publisher
Springer Science and Business Media LLC
Reference64 articles.
1. Amann, F., Ündül, Ö., & Kaiser, P. K. (2014). Crack initiation and crack propagation in heterogeneous sulfate-rich clay rocks. Rock Mechanics and Rock Engineering, 47(5), 1849–1865. https://doi.org/10.1007/s00603-013-0495-3
2. Baranyi, V., Miller, C. S., Ruffell, A., Hounslow, M. W., & Kürschner, W. M. (2018). A continental record of the Carnian Pluvial Episode (CPE) from the Mercia Mudstone Group (UK): palynology and climatic implications. J Geolog Soc. https://doi.org/10.6084/m9.figshare.c.4138085
3. Baranyi, V., Rostási, Á., Raucsik, B., & Kürschner, W. M. (2019). Palynology and weathering proxies reveal climatic fluctuations during the Carnian Pluvial Episode (CPE) (Late Triassic) from marine successions in the Transdanubian Range (western Hungary). Global and Planetary Change, 177(April), 157–172. https://doi.org/10.1016/j.gloplacha.2019.01.018
4. Beutler, G., Hauschke, N., & Nitsch, E. (1999). Faziesentwicklung des Keupers im Germanischen Becken. In: Hauschke, N. & Wilde, N. (Hrsg.): Trias—Eine ganze andere Welt. Mitteleuropa im frühen Erdmittelalter. Verlag Dr. Friedrich Pfeil, München 1999, ISBN 3-931516-55-5, S. pp. 129–174.
5. Brongniart, A. (1825). Observations sur les végétaux fossiles renfermés dans les grès de Hoer en Scanie. Annales Des Sciences Naturelles, 4, 200–224.