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| rdf:type
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| Description
| - Sideritové konkrece jsou známy z paralických i terestrických sedimentů hornoslezské pánve. Významný horizont nad 22. slojí svrchních sušských vrstev (westfal, pennsylvan) byl zkoumán geologickými, mineralogickými a geochemickými metodami.
- Sideritové konkrece jsou známy z paralických i terestrických sedimentů hornoslezské pánve. Významný horizont nad 22. slojí svrchních sušských vrstev (westfal, pennsylvan) byl zkoumán geologickými, mineralogickými a geochemickými metodami. (cs)
- Siderite concretion horizons are known both from the paralic and terrestrial sediments of the Upper Silesian Basin. Significant horizon above the No. 22 Coal Seam in the Upper Suchá Member of Karviná Fm. (Westphalian, Pennsylvanian) was investigated by geological, mineralogical and geochemical methods. Horizon is developed virtually in the whole area of the Upper Suchá Member, where geological documentation is available. It is hosted by grey claystones in the direct roof of the No. 22 Seam, which belongs to the freshwater Faunistic Horizon Group Hubert. Shape of the concretions is mostly ellipsoidal and lensoidal, tabular ones are also present. Their size usually ranges between X0 cm and 1 m. Concretions do not have internal layering, warping of the claystone layering around them was observed. Typical feature of concretions is presence of septarian cracks. Matrix of the concretions is formed almost purely by two populations of non-zoned Mg-Ca or Mg-rich siderite with dispersed quartz, mica and accessory minerals similar to surrounding claystones, i.e. apatite, zircon, monazite and TiO2 minerals. Septarian fissures are filled by two generations of carbonate with predominant dolomitic composition and beef (fibrous) structure. Older one has dark brown colour, younger is white. The 13C value of matrix siderite is +0.77 promile PDB and that of septarian dolomite -8.15 promile PDB, the 18O value of matrix siderite is -11.25 promile PDB and that of septarian dolomite -9.79 promile PDB. Siderite matrix data shows fractionation during diagenetic processes, while fissure carbonate represents post-sedimentary hydrothermal product. Dolomite isotope data are comparable to those of hydrothermal carbonate mineralization of Early Carboniferous of the Nízký Jeseník Mts. We interpret concretion horizon as sediment of internal part of large-scale freshwater lake. Concretions are very probably syncompactional and develop by pervasive growth mechanism. (en)
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| Title
| - Pelokarbonátový horizont nad 22. slojí ve svrchních sušských vrstvách české části hornoslezské pánve
- Pelokarbonátový horizont nad 22. slojí ve svrchních sušských vrstvách české části hornoslezské pánve (cs)
- Siderite concretion horizon above the No. 22 Coal Seam in the Upper Suchá Member of the Czech part of the Upper Silesian Basin (en)
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| skos:prefLabel
| - Pelokarbonátový horizont nad 22. slojí ve svrchních sušských vrstvách české části hornoslezské pánve
- Pelokarbonátový horizont nad 22. slojí ve svrchních sušských vrstvách české části hornoslezské pánve (cs)
- Siderite concretion horizon above the No. 22 Coal Seam in the Upper Suchá Member of the Czech part of the Upper Silesian Basin (en)
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| skos:notation
| - RIV/61989100:27350/14:86090119!RIV15-MSM-27350___
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
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| http://linked.open...iv/cisloPeriodika
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/61989100:27350/14:86090119
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - mineralogy; sedimentology; septarian concretions; Late Carboniferous; Upper Silesian Basin (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...odStatuVydavatele
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...i/riv/nazevZdroje
| - Bulletin mineralogicko-petrologického oddělení Národního muzea v Praze
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| http://linked.open...in/vavai/riv/obor
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| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
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| http://linked.open...UplatneniVysledku
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| http://linked.open...v/svazekPeriodika
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| http://linked.open...iv/tvurceVysledku
| - Jirásek, Jakub
- Matýsek, Dalibor
- Sivek, Martin
- Osovský, Michal
- Gabrhelová, Pavla
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| issn
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| number of pages
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| http://localhost/t...ganizacniJednotka
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