Conodont biostratigraphy and palaeoenvironmental trends during the Famennian (Late Devonian) in the thuringian buschteich section (Germany)

Beitrag in einer Fachzeitschrift
(Originalarbeit)


Details zur Publikation

Autor(en): Girard C, Cornée JJ, Charruault AL, Corradini C, Weyer D, Bartzsch K, Joachimski M, Feist R
Zeitschrift: Newsletters on Stratigraphy
Verlag: E. Schweizerbart'sche Verlagsbuchhandlung
Jahr der Veröffentlichung: 2017
Band: 50
Heftnummer: 1
Seitenbereich: 71-89
ISSN: 0078-0421


Abstract


This study characterizes the stratigraphical context as well as the palaeoenvironmental and sealevel trends during the Late Frasnian and Famennian in the Buschteich section (Thuringia, Germany). An integrated approach combines conodont biostratigraphy, chemostratigraphy based on carbon and oxygen isotopes, conodont biofacies analyses and investigations of the morphotypes of foraminifera that occur in the section was applied. Conodonts provided a fine-scale biostratigraphical framework. All the Famennian conodont biozones were identified, with the exception of the three lowest. The Frasnian-Famennian transition was further identified by a positive carbon isotope excursion. This continuous Famennian record is developed in a condensed limestone succession. The reddish Griotte facies, typical of strata of this period, were not documented. Black shales were not developed except for an interval of dark colored mud rocks corresponding to the Hangenberg event at the top of the section. The carbonate succession of Buschteich was deposited in an outer ramp environment, pelagic organisms are the dominant fauna. This is corroborated by the overall dominance of the deep-water conodont genus Palmatolepis. Microfacies, conodont biofacies and foramini - fera indicated a deepening trend from the Lower crepida to the Lower rhomboidea Zone, followed by a shallowing trend from the Upper rhomboidea to the praesulcata Zone. This sequence overall matches the sea level reference curve for Euramerica. The timing of maximum water depth at Buschteich, as well as the general sea-level reference record, differs from the Col des Tribes (Montagne Noire, France). Differential uplift or overprinting of the long-term eustatic changes may be the cause of the discrepancy in the local sea-level records.



FAU-Autoren / FAU-Herausgeber

Joachimski, Michael Prof. Dr.
Lehrstuhl für Geologie (Exogene Dynamik)


Autor(en) der externen Einrichtung(en)
Museum für Naturkunde
Università degli Studi di Cagliari
University of Montpellier / Université Montpellier


Zitierweisen

APA:
Girard, C., Cornée, J.J., Charruault, A.L., Corradini, C., Weyer, D., Bartzsch, K.,... Feist, R. (2017). Conodont biostratigraphy and palaeoenvironmental trends during the Famennian (Late Devonian) in the thuringian buschteich section (Germany). Newsletters on Stratigraphy, 50(1), 71-89. https://dx.doi.org/10.1127/nos/2016/0318

MLA:
Girard, C., et al. "Conodont biostratigraphy and palaeoenvironmental trends during the Famennian (Late Devonian) in the thuringian buschteich section (Germany)." Newsletters on Stratigraphy 50.1 (2017): 71-89.

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Zuletzt aktualisiert 2018-09-11 um 20:50