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Ekologické vazby ohledně endolitických producentů mikrovrteb a substrátů v barrandienských vápencích devonského stáří, Česká republika
Hladil, Jindřich
The microboring activity in barrandian seas was generally low. It was limited by relatively cold geostrophic currents in outer parts, and the seafloors in inner basin depressions were also adversely influenced by stagnant d18O-positive and heavy-metal-rich bottom waters. The really flourished microborers were only in two stratigraphical intervals, and both have shown /"redbeds-like/" deposits. The first developed close with major end-Tippecanoe regressions in Praha sequence, and the second occurred in the Daleje-Trebotov sequence. These /"redbeds-like/" periods correspond mineralogically, geochemically and paleobiologically to relatively hot humid climates (~ mesotrophic but well oxygenated waters). It differed from other long intervals characterized by marine Corg and silica burial (cherts)
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Bioeroze v geologickém záznamu České republiky. Exkurzní průvodce pro předkonferenční exkurzi 4. mzn. konference o bioerozi. 22.-28. srpna 2004, Česká republika
Mikuláš, Radek
Geological record of bioerosion of the Czech Republic represents a great stratigraphic range, variety of settings and diverse substrates. We have to mention microborings in the probable Late Proterozoic stromatolites, bored bioclasts of the Silurian and Devonian, Devonian and Carboniferous hardgrounds and rockgrounds, rare wood borings in the Permian deposits (Bohemian Massif), Jurassic transgressive and reef facies, Early Cretaceous rockgrounds (Carpathians), Upper Cretaceous bored rockgrounds, bioclasts and wood (Bohemian Massif), Cenozoic borings in wood, leaves, fruit stones and bones (Bohemian Massif), bioclasts and rockgrounds of the Miocene bottom and sedimentary fill of the Carpathian Foreland and the Vienna Basin. Several Pleistocene and Holocene archaeological sites contain the record of animal and plant bioerosion coupled with the human activity.
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Sborník abstraktů ze 4. mezinárodní. konference o bioerozi
Forty-four international contributions on bioerosion from the fossil record and from modern settings show that the first intensively bioturbated substrates were carbonate hardgrounds, soon followed by carbonate bioclasts. By the end of Paleozoic, wood bioerosion starts to take place; marine bioerosion in lithic substrates have much diversified during the Cretaceous and Cenozoic. The set of extended abstracts also shows increasing interest on mammals as tracemakers, and on bioerosion on non-marine settings.
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