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National Repository of Grey Literature 3 records found  Search took 0.00 seconds. 
Family Spathognathodontidae (Conodonta) from the Silurian/Devonian boundary (sections Na Požárech and Praha-Radotín; Prague Synform) and its biostratigraphical correlation
 Hušková, Aneta ; Slavík, Ladislav (advisor) ; Kumpan, Tomáš (referee)
This work is focused on conodont biostratigraphy of the Silurian/Devonian boundary interval in the Prague Synform. The Na Požárech and Praha-Radotín sections were selected in order to study conodont diversity and changes in conodont faunas in different carbonate facies - shallower and deeper-water limestones around the Silurian/Devonian boundary and also to test the assumption, whether differences in bathymetry affect the diversity of taxa of the family Spathognathodontidae. In total 22 samples were analysed, particularly 13 samples from the section Praha-Radotín and 9 samples from the section Na Požárech. All samples were processed in laboratory and the obtained conodont material was studied in detail. The conodont material is abundant in both sections (more than thousand elements) and shows a high diversity and disparity in the family Spathognathodontidae. In total 17 taxa were identified and a new species Zieglerodina petrea is described. This new taxon is easily recognizable because of a distinct morphology and could be usefull for the identification of the base of Devonian in the Prague Synform. Its potential use in global correlation will, however, need further and thorough studies. Also conodonts of the family Icriodontidae are surprisingly abundant in both sections. Thin sections (13 from...
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General review of the natural geological risks for underground constructions in the Prague Synform, with special attention to limestones and to planned high-speed railway tunnels between Praha and Beroun
 Žák, Karel ; Bosák, Pavel ; Cílek, Václav ; Hladil, Jindřich ; Štorch, Petr ; Janečka, Jiří
There exist numerous natural geological risks for the planned construction of railway tunnels in the sediments of Prague Synform. These risks are related to only partial knowledge of the tectonic structure of the Synform, to frequent faulting of the rocks accompanied by zones of deep weatehring and karstification, and to the karst hydrogeology.
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Review of longitudinal geological profiles along planned high-speed railway tunnel between Prague and Beroun
 Bosák, Pavel ; Hladil, Jindřich ; Štorch, Petr ; Žák, Karel
Two different longitudinal geological profiles along the planned railway tunnel between Prague and Beroun and reviewed and discussed.
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