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Podrobnosti záznamu
| Název | | |  | Biostratigraphy and Facies of Upper Jurassic-Lower Cretaceous pelagic carbonate sediments (Oberalm-, Schrambach- and Rossfeld-Formation) in the Northern Calcareous Alps, South of Salzburg
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| | Údaj o odpovědnosti | | | | Daniela Boorová, Harald Lobitzer, Petr Skupien, Zdeněk Vašíček
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| | Další názvy | | | Autor | | | Jazyk | | | | anglicky
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| | Zdrojový dokument - seriál | | | Svazek/č. | | | | Vol. 56, no. 2
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| | Strany | | | | p. 273-318
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| | Rok | | | | 1999
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| | Poznámky | | | | 4 obr., 3 fot., 3 tab., 14 pl.
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| | | il.
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| | | Německé resumé
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| | | Obsahuje bibliografické odkazy
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| | | Zkr. název ser.: Abh. Geol. Bundesanst. (Wien)
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| | Předmětová skupina | | | Geografické jméno | | | Klíčové slovo | | | Abstrakt (anglicky) | | | | An interdisciplinary study of some key sections of Late Jurassic-Early Cretaceous pelagic carbonate sediments (Oberalm-, Schrambach- and Rossfeld-Formation) south of Salzburg was carried out with particular focus on biostratigraphy and microfacies. Calpionellids prooved to be most useful for the Late Jurassic-Berriasian sediments, while dinoflagellate cysts take over this role in sediments of Late Berriasian-Valanginian age, supplemented by occasional findings of aptychi. The most remarkable result of our study is, that the "typical" lithofacies-types of the above mentioned pelagic limestones show considerable different stratigraphic age. "Typical" limestones of Oberalm-type show for instance a Late Tithonian age in the Gutrathsberg and Mathias Waalinger Quarries, while in the Woerndl Quarry they comprise the early- (?middle) Berriasian.
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| | In the Rettenbacher Quarry pelagic limestones of Oberhalm-type are intercalated by allodapic Barmstein-Limestone beds, comprising a stratigraphic interval from the latest Tithonian to the latest Berriasian, maybe even to the early Valanginian. On the contrary the sedimentation of thin-bedded Schrambach-type limestones commenced in the Gutrathsberg Quarry already in the Late Tithonian and persisted till the Late Berriasian. In the Gutrathsberg Quarry variegated coloured marlstones ("Anzenbach-Member") are considered to mark the boundary between the Schrambach- and the Lower Rossfeld-Formation, the latter of Early Valanginian age - as prooved by the study of dinocysts and aptychi - while the marls accompanying the "wildflysch" olistolithic breccia of the Upper Rossfeld-Formation can be dated by dinoflagellate cysts as Late Valanginian.
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| | Another type of "wildflysch" breccias of the Upper Rossfeld-Formation is represented by an extremly poorly sorted clast-supprted breccia without any marly matrix. However, in between the olistolithic clast supported grainflows, also marly pockets can be observed, which yielded dinoflagellate cysts of ? Hauterivian age
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| | Přispěvatel | | | | Česká geologická služba
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| | Kód přispěvatele | | | | ČGS (UNM)
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| | Zdrojový formát | | | | U
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| | Datum vložení | | | | 31. 3. 2008 |
| | Datum importu | | | | 8. 8. 2012 |
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