15 research outputs found

    New information about the Miocene paleontological locality Taliánská skála near Kelčice (Carpathian Foredeep, Czech Republic)

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    The Taliánská skála locality is situated near Prostějov within the Vranovice-Kelčice cadastral area, about 1 km se. of Kelčice (Fig. 1). It is an old abandoned quarry in Miocene (Lower Badenian) sediments of the Carpathian Foredeep belonging to the formation with algal limestones. In 2014–2016, a new detailed study of this locality has been carried out as a part of a bachelor thesis at the Department of Biology, Faculty of Education, Palacky University in Olomouc (Zapletal 2016). By macroscopic study of the rocks at the locality it has been ascertained that they are represented by sandy limestones to calcareous sandstones, also microscopic study of two thin-sections confirmed that these rocks can be classified more likely as calcareous sandstones than as typical algal limestones. The new research confirmed this locality to be relatively rich in fossils, namely with regard to both their amount and number of species. The following species were found: the worm Ditrupa cornea (Linnaeus), bivalves Aequipecten macrotis (Sowerby in Smith), Corbula cf. gibba (Olivi), Panopea (Panopea) menardi (Deshayes), Tellina sp. and ?Ervilia sp.; additionally, there were the gastropods Turritella cf. badensis Sacco and Turritella sp., one undeterminable bryozoan and the ichnofossil Ophiomorpha isp. In the thin-sections from the rocks collected at the locality there were ascertained foraminifers, ostracods, echinoderms (echinoids) and worms. The presence of red algae has not been proved either macroscopically or microscopically.The Taliánská skála locality is situated near Prostějov within the Vranovice-Kelčice cadastral area, about 1 km se. of Kelčice (Fig. 1). It is an old abandoned quarry in Miocene (Lower Badenian) sediments of the Carpathian Foredeep belonging to the formation with algal limestones. In 2014–2016, a new detailed study of this locality has been carried out as a part of a bachelor thesis at the Department of Biology, Faculty of Education, Palacky University in Olomouc (Zapletal 2016). By macroscopic study of the rocks at the locality it has been ascertained that they are represented by sandy limestones to calcareous sandstones, also microscopic study of two thin-sections confirmed that these rocks can be classified more likely as calcareous sandstones than as typical algal limestones. The new research confirmed this locality to be relatively rich in fossils, namely with regard to both their amount and number of species. The following species were found: the worm Ditrupa cornea (Linnaeus), bivalves Aequipecten macrotis (Sowerby in Smith), Corbula cf. gibba (Olivi), Panopea (Panopea) menardi (Deshayes), Tellina sp. and ?Ervilia sp.; additionally, there were the gastropods Turritella cf. badensis Sacco and Turritella sp., one undeterminable bryozoan and the ichnofossil Ophiomorpha isp. In the thin-sections from the rocks collected at the locality there were ascertained foraminifers, ostracods, echinoderms (echinoids) and worms. The presence of red algae has not been proved either macroscopically or microscopically

    Mollusc fauna (Gastropoda, Bivalvia) from locality Mušlov (Vienna Basin)

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    The Mušlov locality is situated 3.5 km ESE from the town of Mikulov and it is a part of the Vienna Basin. On the locality a profile rich in shallow-water middle Miocene (Badenian) fauna was uncovered. Its substantial part was deposited in fine-grained calcareous sand, to a lesser extent the fauna also occurred in pebbles and blocks of gray algal limestones. Mainly stone cores with calcareous and degrading shells were found in the limestones, while in the calcareous sands the fossils were well preserved. A rich set of small fauna from fine-grained sand was obtained by washing of samples. There have been determined 73 species of Gastropoda and 25 species of Bivalvia. The most abundant species of gastropods are Tricolia eichwaldi, Rissoina podolica, Bittium reticulatum, Gibbula aff . umbilicalis, Jujubinus striatus, Neritina picta and Turritella bicarinata. Among bivalves the most abundand species are Cardites partschi partschi and Linga columbella. Quantity and degree of conservation of fauna indicate minimal transport and slow sedimentation on the sea floor. Based on the found species, the fauna was mainly bound to a fine-grained substrate but there were also species that preferred the solid substrate. The abundant occurrence living on algal species is evidenced by their rich stands. The fauna lived in the shallow sea with a good oxygenation and a normal salinity. The occurrence of some species documents a warm sea between 20–28 °C.The Mušlov locality is situated 3.5 km ESE from the town of Mikulov and it is a part of the Vienna Basin. On the locality a profile rich in shallow-water middle Miocene (Badenian) fauna was uncovered. Its substantial part was deposited in fine-grained calcareous sand, to a lesser extent the fauna also occurred in pebbles and blocks of gray algal limestones. Mainly stone cores with calcareous and degrading shells were found in the limestones, while in the calcareous sands the fossils were well preserved. A rich set of small fauna from fine-grained sand was obtained by washing of samples. There have been determined 73 species of Gastropoda and 25 species of Bivalvia. The most abundant species of gastropods are Tricolia eichwaldi, Rissoina podolica, Bittium reticulatum, Gibbula aff . umbilicalis, Jujubinus striatus, Neritina picta and Turritella bicarinata. Among bivalves the most abundand species are Cardites partschi partschi and Linga columbella. Quantity and degree of conservation of fauna indicate minimal transport and slow sedimentation on the sea floor. Based on the found species, the fauna was mainly bound to a fine-grained substrate but there were also species that preferred the solid substrate. The abundant occurrence living on algal species is evidenced by their rich stands. The fauna lived in the shallow sea with a good oxygenation and a normal salinity. The occurrence of some species documents a warm sea between 20–28 °C

    Post-Palaeozoic geological history saved in sedimentary record of Miocene remnants in Brno-Líšeň

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    Recent operation in the Kalcit Quarry near Brno-Líšeň exposed contact of Devonian limestones with overlying Miocene sediments. Calcareous silts with chert debris and non-calcareous clays fi lling the cleft s in the limestone are Middle Miocene in age (Lower Badenian). They contained association of translucent heavy minerals derived from Drahany Culmian formations and the Brno Massif. Fossil content comprised conodonts and foraminifers weathered off the Lower Carboniferous limestones, brackish gastropods reworked from the Rzehakia Beds (Ottnangian) and foraminifers reworked from Karpatian and Lower Badenian clays. Overlying grey gravelly sand contained varied association of heavy minerals reworked from post-Jurassic products of tropical weathering and block of Paleogene silcrete. Finally, the Lower Badenian Brno Sands capping the section contained rich pseudoassociation of foraminifers reworked from the Karpatian and Badenian sediments nearby as well as Upper Cretaceous and Paleogene foraminifers from more distant edge of the Carpathian Flysch Belt.Recent operation in the Kalcit Quarry near Brno-Líšeň exposed contact of Devonian limestones with overlying Miocene sediments. Calcareous silts with chert debris and non-calcareous clays fi lling the cleft s in the limestone are Middle Miocene in age (Lower Badenian). They contained association of translucent heavy minerals derived from Drahany Culmian formations and the Brno Massif. Fossil content comprised conodonts and foraminifers weathered off the Lower Carboniferous limestones, brackish gastropods reworked from the Rzehakia Beds (Ottnangian) and foraminifers reworked from Karpatian and Lower Badenian clays. Overlying grey gravelly sand contained varied association of heavy minerals reworked from post-Jurassic products of tropical weathering and block of Paleogene silcrete. Finally, the Lower Badenian Brno Sands capping the section contained rich pseudoassociation of foraminifers reworked from the Karpatian and Badenian sediments nearby as well as Upper Cretaceous and Paleogene foraminifers from more distant edge of the Carpathian Flysch Belt

    Miocene brachiopods from the Židlochovice locality, Czech Republic

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    Miocenní brachiopodi z lokality Židlochovice, Česká republikaV příspěvku jsou prezentovány první nálezy miocenních brachiopodů z lokality Židlochovice (karpatská předhlubeň, Morava, Česká republika), a to ze dvou nových vrtů, ŽIDL1 a ŽIDL2, které byly na této lokalitě provedeny v roce 2010. Byly zjištěny celkem 4 druhy brachiopodů, a to Argyrotheca cuneata (Risso, 1826), Argyrotheca sp., Joania sp. a Megathiris detruncata (Gmelin, 1790). Vyskytují se poměrně velmi vzácně a v malém počtu jedinců, byli nalezeni zejména ve vrtu ŽIDL2, pouze druh A. cuneata se objevil i ve vrtu ŽIDL1. Všechny zjištěné druhy jsou běžné v miocénu Centrální Paratethydy Miocene brachiopods are reported for the first time from two boreholes, designated as ŽIDL1 and ŽIDL2, drilled in 2010 at the Židlochovice locality (Carpathian Foredeep, Moravia, Czech Republic). Four species, namely Argyrotheca cuneata (Risso, 1826), Argyrotheca sp., Joania sp. and Megathiris detruncata (Gmelin, 1790), have been identifi ed. They are very rare in the studied material and occur mainly in the ŽIDL2 borehole, only A. cuneata has been found in the ŽIDL1 borehole. All the discussed species are common in the Miocene of the Central Paratethys

    NOVÉ VÝSLEDKY STUDIA SPODNOBADENSKÝCH SEDIMENTŮ A FOSILIÍ Z NĚKTERÝCH VRTŮ V KARPATSKÉ PŘEDHLUBNI JIŽNĚ OD BRNA

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    The sedimentological, paleontological and isotopic studies of the boreholes HJ 1 Chrlice, HJ 2 Otmarov and HJ 103 Opatovice confirmed that the Lower Badenian sedimentation in the studied area differs from the typical Lower Badenian developments (the uncommon absence of basal clastic sediments and of greater thicknesses of calcareous clays - „tegels“, rhytmical interlaminatings of sandy and clayey layers). It was probably primarily influenced by the existence of the Nesvačilka trough. The sedimentation took place in the marine environment with normal salinity, in a relatively shallow water with a relatively high or fluctuating dynamics (globally growing uprwards). The sea shore was rather wet up to swampy, the climate warm but probably not extremely

    NÁLEZY BADENSKÝCH FOSÍLIÍ V JESKYNI SVÁŽNÁ STUDNA, MORAVSKÝ KRAS – DŮSLEDKY PRO SPELEOGENEZI

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    Relatively rich macrofauna and microfauna of Badenian age was found in a depth of 25–32 m in a vertical cave Sváná studna (Moravian Karst). The cave was excavated downwards from a sinkhole situated at the foot of upper part of the valley (canyon). The lower part of the canyon is filled with more than 100m thick marine Badenian clays with horizons of volcanic tuffites. The stage of preservation of macrofauna and microfauna suggests very little or no transport and thus primary sedimentation in pre-Badenian cavities

    FAUNA VRTŮ HL1 A HL2 U HLUCHOVA (STŘEDNÍ MIOCÉN), PROSTĚJOVSKO

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    The lithological profile studied within two boreholes near Hluchov can be subdivided into three sections: in lower one occurs sandy clay with large clasts of Carboniferous rock, the medium part is characteristic by occurrence of calcareous sand and the youngest part with the most variable lithology contains calcareous sands, sandy limestones, limestones and clays. Beside bryozoans, which dominate in all sections, samples contain molluscs, foraminifers, fragments of echinoids, ostracods, otoliths, teeth of bone fishes, and fragments of spicules of sponges. Altogether 24 bryozoans species have been determined, from them five species important for palaeoecology have been described and illustrated. Palaeoecological analysis suggests mixed palaeoenvironment

    SEDIMENTY KARPATU A SPODNÍHO BADENU NA ULICI KOPEČNÁ V BRNĚ

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    Occasional excavations in the center of Brno enabled observations of Miocene sediments. Karpatian gray calcareous clays contained characteristic marker foraminifers Pappina breviformis and Uvigerina graciliformis. Badenian strata have transgressively overlapped metabazite of the Cadomian Brno Massif. The Badenian sediments consisted of remnant of sands, block accumulation, and overlaying calcareous clays with mollusc and coral fauna. Clastic rocks represent infralittoral facies, calcareous clays circalittoral ones. Miocene sediments are disturbed by landslide of unknown age

    Middle Pleistocene landslide on the slopes of the Drahany Highlands close to Viničné Šumice village

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    In 2018 an excavation of 20 × 20 m large and up to 5 m thick calcareous clays of the Langhian age was found. Rich and diversified assemblages of foraminifers with species Orbulina suturalis Brön. and Martinotiella karreri (Cush.) indicate early Badenian (in sense of the Central Paratethys regional stratigraphy) age of the sediments, zone M5b sensu Berggren et al. (1995). Variously deformed lenses and layers of fine-grained sand with several blocks of white calcareous silts and with two layers of clayey sediments with pebbles were found. The identified outcrop is part of a large landslide situated at the western margin of the Carpathian Foredeep. Samples determining the age of the landslide movements were taken from Badenian clays and from slope sediments with pebbles for study of palynomorphs. Very rich and diversified fauna was described mainly from the fine-grained sand creating layers in calcareous clays. The assemblage contained tests of foraminifers, spines of the echinoids, fragments of sponge spicules, rich fragments of molluscs and zoarias of bryozoas, worms – Ditrupa cornea (Linnaeus, 1758), Serpula sp., ?Serpulidae indet., fragments of brachiopods, arthropods, coral, ostracods, teleostei etc.The findings from the Badenian and Quaternary periods were mixed by slope movements. Large landslide in the Middle Pleistocene was the terminal gravity proces in the area of Viničné Šumice.In 2018 an excavation of 20 × 20 m large and up to 5 m thick calcareous clays of the Langhian age was found. Rich and diversified assemblages of foraminifers with species Orbulina suturalis Brön. and Martinotiella karreri (Cush.) indicate early Badenian (in sense of the Central Paratethys regional stratigraphy) age of the sediments, zone M5b sensu Berggren et al. (1995). Variously deformed lenses and layers of fine-grained sand with several blocks of white calcareous silts and with two layers of clayey sediments with pebbles were found. The identified outcrop is part of a large landslide situated at the western margin of the Carpathian Foredeep. Samples determining the age of the landslide movements were taken from Badenian clays and from slope sediments with pebbles for study of palynomorphs. Very rich and diversified fauna was described mainly from the fine-grained sand creating layers in calcareous clays. The assemblage contained tests of foraminifers, spines of the echinoids, fragments of sponge spicules, rich fragments of molluscs and zoarias of bryozoas, worms – Ditrupa cornea (Linnaeus, 1758), Serpula sp., ?Serpulidae indet., fragments of brachiopods, arthropods, coral, ostracods, teleostei etc.The findings from the Badenian and Quaternary periods were mixed by slope movements. Large landslide in the Middle Pleistocene was the terminal gravity proces in the area of Viničné Šumice

    Paleoenvironment during the Lower Badenian along the northern margin of Brno city (the Diviš district)

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    Lower Badenian sediments were studied on the locality Hvozdíkova at the Diviš district, Brno. There were interpreted 4 lithofacies of Neogene (Lower Badenian) sediments (lithofacies M1, M2, Sl, and SGl). Occurrence of basal Lower Badenian clastics is connected with existence of coarse-grained delta (foreset). Overlying pelites document pelagic sedimentation of open sea. Garnet dominates in assemblage of heavy translucent minerals.Rich assemblages of foraminifers, molluscs, spines of echinoids, ostracods and shark fauna were discovered in sediments. Diversified assemblages are dominated by plankton specimens. Species Orbulina suturalis Brön., Praeorbulina glomerosa circularis (Blow) and Globigerinoides bisphericus Todd. indicate the Lower Badenian age.From the point of view of the shark fauna diversity the locality Hvozdíkova is unique; shark fauna is very rare in Lower Badenian clays, and the genera of Squaliolus and Paraetmopterus are identified for the first time. Oysters – especially species Neopycnodonte navicularis (Brocchi) – dominate in Lower Badenian sediments. Small gastropods (for example Cancellaria sp., ?Tornus sp., Rissoa sp., Alvania sp.) probably represent fossils reworked from shallow littoral area. Lower Badenian sediments were studied on the locality Hvozdíkova at the Diviš district, Brno. There were interpreted 4 lithofacies of Neogene (Lower Badenian) sediments (lithofacies M1, M2, Sl, and SGl). Occurrence of basal Lower Badenian clastics is connected with existence of coarse-grained delta (foreset). Overlying pelites document pelagic sedimentation of open sea. Garnet dominates in assemblage of heavy translucent minerals.Rich assemblages of foraminifers, molluscs, spines of echinoids, ostracods and shark fauna were discovered in sediments. Diversified assemblages are dominated by plankton specimens. Species Orbulina suturalis Brön., Praeorbulina glomerosa circularis (Blow) and Globigerinoides bisphericus Todd. indicate the Lower Badenian age.From the point of view of the shark fauna diversity the locality Hvozdíkova is unique; shark fauna is very rare in Lower Badenian clays, and the genera of Squaliolus and Paraetmopterus are identified for the first time. Oysters – especially species Neopycnodonte navicularis (Brocchi) – dominate in Lower Badenian sediments. Small gastropods (for example Cancellaria sp., ?Tornus sp., Rissoa sp., Alvania sp.) probably represent fossils reworked from shallow littoral area
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