Conodont biostratigraphy and palaeoenvironmental trends during the Famennian (Late Devonian) in the Thuringian Buschteich section (Germany)
01 Jan 2017-Newsletters on Stratigraphy (Schweizerbart'sche Verlagsbuchhandlung)-Vol. 50, Iss: 1, pp 71-89
TL;DR: In this article, an integrated approach combining conodont biostratigraphy, chemostratigraphies based on carbon and oxygen isotopes, and investigations of the morphotypes of foraminifera that occur in the Buschteich section (Thuringia, Germany) was applied.
Abstract: This study characterizes the stratigraphical context as well as the palaeoenvironmental and sea-level 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 con-odont 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 shal-lowing 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.
Citations
More filters
••
TL;DR: In this article, the authors studied the geochemical and lithological expressions of the Kellwasser Event using a wide variety of paleoenvironments, a multiproxy approach, and placing of results into the broader context of Late Devonian marine biodiversity patterns.
62 citations
••
TL;DR: In this paper, the authors compared two continuous outcrops in the Montagne Noire (Col des Tribes section, France) and in Saxo-Thuringia (Buschteich section, Germany).
22 citations
••
TL;DR: The Lali section (Guangxi Province, South China) is composed of quiet-water carbonates containing abundant conodonts, which allowed recognition of 12 Frasnian and 20 Famennian biozones as discussed by the authors.
21 citations
••
TL;DR: In this paper, a case study of the Upper Devonian Chattanooga Shale in the Dupont GHS drillcore from the western margin of the Nashville Dome, the authors recognized three Frasnian, seven Famennian, and one Tournaisian conodont biozones are recognized.
18 citations
••
TL;DR: A new biostratigraphically constrained carbon isotope record from the Lali section (South China) to document perturbations in the Late Devonian carbon cycle is presented in this article.
17 citations