| Attributes | Values |
|---|
| rdf:type
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| Description
| - During the Cretaceous period, about 130 million years ago, the examined area was a complex of swamps, lakes and rivers. But nearby active volcano belt -- great rift system of east -- west orientation regularly showered the area with ash. The mud, sand and ash covered ancient forests and everything that lived there. In the mineralized tufs and sandstone, detrital grains consisting of quartz, feldspar, vulcanic rock fragments, carbonaceous trashes and other accessory minerals were deposited in this time. But not only this material survived to the present days...together with fossil wood remnants (which rode out a large fires) were cemented by clays and minor authigenic calcite and quartz. Varieties of cryptocrystaline quartz selectively replaced carbonatized fossil wood (filled fossil wood cells). So large replacement of organic debris by secondary chalcedon and jasper was caused by a high activity of SiO2 fluids- high postvolcanic activity of whole area of rifts during its relatively long fossilizat
- During the Cretaceous period, about 130 million years ago, the examined area was a complex of swamps, lakes and rivers. But nearby active volcano belt -- great rift system of east -- west orientation regularly showered the area with ash. The mud, sand and ash covered ancient forests and everything that lived there. In the mineralized tufs and sandstone, detrital grains consisting of quartz, feldspar, vulcanic rock fragments, carbonaceous trashes and other accessory minerals were deposited in this time. But not only this material survived to the present days...together with fossil wood remnants (which rode out a large fires) were cemented by clays and minor authigenic calcite and quartz. Varieties of cryptocrystaline quartz selectively replaced carbonatized fossil wood (filled fossil wood cells). So large replacement of organic debris by secondary chalcedon and jasper was caused by a high activity of SiO2 fluids- high postvolcanic activity of whole area of rifts during its relatively long fossilizat (en)
- Ve svrchním mesozoiku (období křídy, cca 130 Ma) představovala studovaná oblast komplex bažin, jezer a řek. Pro fosilizaci okolních lesů hrala hlavní roli přítomnost aktivního kontinentálního riftu ve směru V-Z, který periodicky produkoval ohromné množství pyrtoklastického materiálu a láv. Je velmi pravděpodobné, že každý les byl prakticky zcela zasypán ještě žhavými pyroklastiky. Pro studované lokality je typické, že se vyskytují v tufech, kde se při diagenezi projevil především proces rychlé ho uvolňování oxidu křemičitého. Oxid křemičitý postupně pronikal do rozpadající se dřevní hmoty. Touto cestou pravděpodobně docházelo k extrémně rychlé silicifikaci a tím bylo rovněž bráněno procesu hnití či prouhelňování. Velmi rychlá silifikace dřevní hmoty je podmíněna nízkoteplotními metasomatickými procesy, ke kterým docházelo při vysoké aktivitě SiO2 v celé oblasti i díky zvíšené postvulkanické činosti. U celé řady vzorků je zachována komplexní stavba původní buničiny a ligninu s růstovými letokruhy, kte (cs)
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| Title
| - Podmínky fosilizace zkamenělých lesů v poušti Gobi, jihovýchodní Mongolsko (cs)
- Conditions of fossilization of petrified forests in the Gobi desert, southeastern Mongolia
- Conditions of fossilization of petrified forests in the Gobi desert, southeastern Mongolia (en)
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| skos:prefLabel
| - Podmínky fosilizace zkamenělých lesů v poušti Gobi, jihovýchodní Mongolsko (cs)
- Conditions of fossilization of petrified forests in the Gobi desert, southeastern Mongolia
- Conditions of fossilization of petrified forests in the Gobi desert, southeastern Mongolia (en)
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| skos:notation
| - RIV/62156489:43410/04:00002692!RIV/2005/GA0/434105/N
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| http://linked.open.../vavai/riv/strany
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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...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/62156489:43410/04:00002692
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| http://linked.open...riv/jazykVysledku
| |
| http://linked.open.../riv/klicovaSlova
| - Gobi desert;Mongolia;fossilization;petrified forests;silicification (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...v/mistoKonaniAkce
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| http://linked.open...i/riv/mistoVydani
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| http://linked.open...i/riv/nazevZdroje
| - MendelNet 2004, Proceedings of International Postgraduate Students´ Conference
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| http://linked.open...in/vavai/riv/obor
| |
| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
| |
| http://linked.open...vavai/riv/projekt
| |
| http://linked.open...UplatneniVysledku
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| http://linked.open...iv/tvurceVysledku
| |
| http://linked.open...vavai/riv/typAkce
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| http://linked.open.../riv/zahajeniAkce
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| number of pages
| |
| http://purl.org/ne...btex#hasPublisher
| - Mendelova zemědělská a lesnická univerzita v Brně
|
| https://schema.org/isbn
| |
| http://localhost/t...ganizacniJednotka
| |
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