Browsing by Subject "Devonian dolomites"

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Access status: Restricted ,
Geologiczne i środowiskowe uwarunkowania eksploatacji złoża dolomitów Wszachów
(Data obrony: 2013-09-27) Ciejka, Oskar
Wydział Geologii, Geofizyki i Ochrony Środowiska
The aim of the thesis is the evaluation of the geological and environmental conditions of the „Wszachów” deposit. Not only the region where the deposit is located was described but also its exposure focused on administrative division including the morphology, geology and the historical research of the area. Within the graduation practice, detailed observation as well as geological research in the active mine workings were conducted. The main result of the thesis is the inner structure and the overburden of the deposit characterization. The delineation embraces lithology, tectonics, karst and overburden creation. On the base of literature and references, the hydrogeology conditions, manual and mechanical properties as well as the chemical composition of the deposit were described. What is more, the influence of the deposit exploitation at the environment and tangible goods were presented. In conclusion, previously described factors were evaluated and their impact on the undertaken exploitation was assessed.
Access status: Open Access ,
Multi-stage fault formation and REE distribution in the surrounding Devonian dolomites in the south-eastern part of the Holy Cross Mountains (Poland)
(Wydawnictwa AGH, 2024) Nieć, Marek; Pawlikowski, Maciej ; Sermet, Edyta
Metallogenic studies carried out in the Holy Cross Mountains indicate a relationship between mineralization and fault tectonics in Devonian formations. The impact of fault formation on the geochemistry of host rocks has not yet been studied. Mineralogical and geochemical studies of fault core gouges and damage zones in the fault walls of Devonian dolomites in the Budy and Jurkowice quarries were carried out. In the clay-carbonate filling of the fault fissure, the presence of two generations of Fe sulfides, the increased content of Zr, Nb, U and Th in relation to the surrounding rocks was noted. In the fault walls of the dolomites, iron sulfide and hematite mineralization were found. Research on the REE content indicates that it is lower in the fault walls than in those located far from it, while it is clearly higher in the fault gouge, especially in terms of the content of “heavy” elements (HREE). This indicates both the supply of some components to the fault zone from external sources and their displacement from the surrounding rocks. It was also found that the fault was renewed before and after the Neogene at least twice (Badenian).
Access status: Restricted ,
Wpływ wykształcenia na właściwości i stosowanie w drogownictwie dolomitów dewońskich ze złoża Dubie
(Data obrony: 2012-09-26) Bujas, Justyna
Wydział Geologii, Geofizyki i Ochrony Środowiska
In this thesis presents the geological structure and lithological development of Devon’s formations that build anticline of Dębnik, which is surrounded by the deposit of dolomites „Dubie”. Quarry was also described and the way of exploitation of this mine. The types and varieties of dolomites founded during the field work were characterized during macro and microscopic research. Additionally, the analysis of the variability of their physicalmechanical parameters was made, determining their usability in road construction. The diversity of these properties was revealed and it was concluded that they are depended on the textural and structural formation and mineral composition of the respective types of dolomites. Opportunities of using this mine in road construction were examined based on the current norms. Furthermore, an issue of environmental protection around pit mining and it’s recultivation was discussed.