Biostratigraphy and paleoecology of the Lower Cretaceous sediments in the Outer Western Carpathians (Silesian Unit, Czech Republic)

Svobodová, Marcela; Švabenická, Lilian; Skupien, Petr; Hradecká, Lenka

doi:10.2478/v10096-011-0024-9

Cited by 14 publications

(5 citation statements)

References 22 publications

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“…According to Eliáš and Stráník (1963), Eliáš (1970) and Eliáš and Eliášová (1986), the limestones are embedded in base-of-slope conglomerates and slump bodies within the Cretaceous part of the Hradiště Formation, constituting an extreme development of the Chlebovice Conglomerate. This accumulation was formed between Tithonian and Turonian (see Svobodová et al, 2004Svobodová et al, , 2011Vašíček and Skupien, 2014). According to Picha et al (2006), the Štramberk carbonate platform was the source of the clastics and large fragments of the carbonate body, later created by a combination of mass movement and tectonic activity.…”

Section: Geological Settingmentioning

confidence: 99%

Microencruster-microbial framework and synsedimentary cements in the Štramberk Limestone (Carpathians, Czech Republic): Insights into reef zonation

Hoffmann¹,

Kołodziej²,

Skupien³

2017

ASGP

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The Štramberk Limestone (Tithonian-lower Berriasian) was developed on a northerly located, isolated intra-Tethyan carbonate platform. It is composed of various facies that can be observed in olistoliths and blocks embedded in the Cretaceous flysch of the Outer Carpathians in Moravia (Czech Republic). Corals, microbialites, microencrusters and synsedimentary cements contributed on various scales to the reef framework. The importance of corals and some microencrusters to the formation of the Štramberk reef complex is well recognized, while other components received less attention in previous studies. Two end members of boundstone types are described from the Kotouč Quarry, near Štramberk. Boundstone type A is dominated by phaceloid (branching-type) corals, encrusted by microbialites and microencrusters, in particular photophile species ("Lithocodium-Bacinella", Koskinobullina socialis Cherchi et Schroeder, Iberopora bodeuri Granier et Berthou). Boundstone type B is composed of microencrusters, microbialites and synsedimentary isopachous fibrous cements, while corals are absent or subordinate. Microencrusters [Crescentiella morronensis (Crescenti), Labes atramentosa Eliášová, Perturbatacrusta leini Schlagintweit et Gawlick, Radiomura cautica Senowbari-Daryan et Schäfer, thin encrusting calcified sponges] are main biotic components of the microencruster-cement boundstone. Some identified microencrusters are known only or mostly from intra-Tethyan carbonate platforms. Except for C. morronensis, other common microencrusters in the coral-microbial boundstone (type A) are rare in the microencruster-cement boundstone (type B). The depositional setting of boundstone type A corresponds to a low-energy environment of an inner platform. Boundstone type B, until now not recognized in the Štramberk Limestone, was developed in a high-energy, upper fore-reef slope environment. Other important facies in the Kotouč Quarry are reef-derived breccias: matrix-supported breccia and clast-supported breccia with radiaxial-fibrous cement (showing some similarities to Triassic "evinosponges" cement), interpreted as being dominantly synsedimentary (pre-burial). The preliminary studies by the present authors, supported by observations under cathodoluminescence, highlight the significance of synsedimentary cementation for the formation of a boundstone framework (type B) and the stabilization of fore-reef, slope deposits.

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Section: Geological Settingmentioning

confidence: 99%

Microencruster-microbial framework and synsedimentary cements in the Štramberk Limestone (Carpathians, Czech Republic): Insights into reef zonation

Hoffmann¹,

Kołodziej²,

Skupien³

2017

ASGP

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“…Through them, the Late Valanginian age of the sediments can be derived (Leereveld 1995(Leereveld , 1997Skupien & Vašíček 2002). Cymososphaeridium validum, and Muderongia mcwhaei are most abundant in the Late Valanginian deposits of the Western Carpathians (Skupien & Smaržová 2011, Svobodová et al 2011.…”

Section: Non-calcareous Dinoflagellate Cystsmentioning

confidence: 99%

Biostratigraphy of the Lower Cretaceous Schrambach Formation on the classical locality of Schrambachgraben (Northern Calcareous Alps, Salzburg Area)

Boorová¹,

Skupien²,

Vašíček³

et al. 2015

Bull. Geosci.

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Schrambach Formation in the Eastern Alps area is conceived from the lithological and stratigraphical point of view rather non-uniform. Therefore a 200 m thick section in the type locality of the Schrambach Formation, situated south of Salzburg, is documented in this study. The studied sequence in the Schrambachgraben seems to be in the prevailing part of section in simple, monoclinal mode of deposition. The opposite is true. The section studied begins with the Oberalm Formation, passes gradually into the Schrambach Formation and ends with the lower part of the Rossfeld Formation. According to our detail results, deposits of the Schrambach Formation in this type of section occur in a minimum of three tectonic slices. The first tectonic slice is composed of a transitional sequence of the Oberalm Formation to the Schrambach Formation. The uppermost part of the Oberalm Formation is dated as the Middle Berriasian Calpionella Zone (Elliptica Subzone). According to calcareous dinoflagellates, the lower part of the stratal sequence of the Schrambach Formation belongs to the Fusca Acme Zone, which corresponds to the early part of the Late Berriasian. According to the occurrence of the calpionellids Calpionellites uncinata, Cts. darderi and Cts. major, the second slice belongs to the Early Valanginian. With respect to occurrences of ammonites and non-calcareous dinoflagellates findings, the tectonic slice belongs to the higher Late Berriasian Subthurmannia boissieri ammonite Zone. Czech Republic; zdenek.vasicek@ugn.cas.cz • Harald Lobitzer, Lindaustraße 3, A 4820 Bad Ischl, Austria In the years 2000-2001 we studied and documented Lower Cretaceous sequence in the type locality of the Schrambach Formation situated in the area of Schrambachgraben in the area of Salzburg. The first results of this study (Rasser et al. 2003) we focused also on an overview of previous studies into the Schrambachschichten and on the hitherto concept of the Schrambach Formation.In addition, the type locality of the Schrambachschichten, its stratigraphy and lithostratigraphy, geological and depositional conditions, macro-and micropaleontology with microfacies are described in detail here, along with designation of sampling points for thin sections and microanalyses.The goal of the study submitted is primarily to provide detailed biostratigraphy of the Schrambach Formation in the type locality. Our microbiostratigraphic research focuses on the study of calpionellids and calcareous and non-calcareous dinoflagellates. Ammonites and aptychi,

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“…In his opinion, the intimately associated Upper Cretaceous deeper-water deposits subsequently filled up fissures and cavities when the sea transgressed upon a solid base of Štramberk Limestone. According to Eliáš (1970) and Eliáš & Eliášová (1986), the limestone blocks are simply olistoliths associated with the base-of-slope conglomerates and slump bodies of the Cretaceous Hradiště Formation, and represent extremes of the Tithonian to Turonian Chlebovice Conglomerate (see also Vašíček & Skupien 2004, Svobodová et al 2011. As stated by Pícha et al (2006), the truth may lie somewhere in the middle.…”

mentioning

confidence: 78%

Palaeoecology of Valletia antiqua Favre in Joukowsky & Favre, 1913 (Bivalvia, Hippuritida, Diceratidae); with comments on the taxonomy and distribution of the genus Valletia

Schneider¹,

Skupien²

2015

Bull. Geosci.

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The early rudist bivalve Valletia antiqua Favre in Joukowsky & Favre, 1913 is recorded for the first time from the Tithonian to Berriasian Štramberk Limestone (northeastern Czech Republic) and Ernstbrunn Limestone (Lower Austria). The species is re-described and its spatial distribution and stratigraphical range are outlined. Furthermore, the palaeoecology of Valletia antiqua is discussed in the light of novel data on palaeocommunities and microfacies, habitat selection and intraspecific competition for settling space among juveniles. The study is supplemented with a commented list of all nominal species that have been assigned to Valletia, including data on type localities, type strata, and distribution.•

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Biostratigraphy and paleoecology of the Lower Cretaceous sediments in the Outer Western Carpathians (Silesian Unit, Czech Republic)

Cited by 14 publications

References 22 publications

Microencruster-microbial framework and synsedimentary cements in the Štramberk Limestone (Carpathians, Czech Republic): Insights into reef zonation

Microencruster-microbial framework and synsedimentary cements in the Štramberk Limestone (Carpathians, Czech Republic): Insights into reef zonation

Biostratigraphy of the Lower Cretaceous Schrambach Formation on the classical locality of Schrambachgraben (Northern Calcareous Alps, Salzburg Area)

Palaeoecology of Valletia antiqua Favre in Joukowsky & Favre, 1913 (Bivalvia, Hippuritida, Diceratidae); with comments on the taxonomy and distribution of the genus Valletia

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