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Magmatic and Volcanic Evolution of the Doupovské hory Volcanic Complex
Rapprich, Vladislav ; Holub, František (advisor) ; van Wyk de Vries, Benjamin (referee) ; Renno, Axel D. (referee)
The Doupovské hory Volcanic Complex (DHVC) occupies the western part of the northeast- southwest trending Eger Graben in northwestern part of the Bohemian Massif. The Graben follows the older Variscan suture between the Saxothuringian and Teplá-Barrandian Domains. The rocks of the DHVC are alkaline with setting and composition similar to other Cenozoic intraplate volcanic complexes of the Central and Western Europe (CIMACi). The Doupovské hory Volcanic Complex started the activity in the Lowermost Oligocene and lasted until Lower Miocene. The volcanic activity resulting in accumulation of the Doupovské hory Volcanic Complex was several times interrupted by periods of volcanic edifice decay and sector collapses. The magmatic activity lasted for ca. 14 M.y. and built a volcanic complex of total thickness 600-1000 m. The earliest volcanic activity was explosive in style and the eruptions could be classified as Strombolian to Sub-plinian and phreatomagmatic. The eruptions deposited about 80 m of volcaniclastics. This initial activity was dated by paleontology to the Lowermost Oligocene. The volcanic activity subsequently became calmer and lava flows dominated over explosive events. The growth of the early DHVC edifice culminated with intrusions of the Flurbühl intrusive complex by about 30-29 Ma. The...
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Volcanism of Large Igneous Provinces in Earth's history; possible impacts on global ecosystem
Zajícová, Jana ; Holub, František (advisor) ; Rapprich, Vladislav (referee)
Large igneous provinces (LIPs) are huge accumulations of magmatic rocks originated during unusually short time and characterized by extremely high magma productivity. Among them, namely the continental flood basalts (traps) cover very extensive areas and may or may not be associated to rifting and breakup of continents. However, also highly voluminous oceanic plateaus were recognized and some authors count to LIPs even some other types of huge magmatic complexes. A large amount of gases is released with escaping magma, usually oxides of carbon, sulfur and nitrogen. These gases more or less have impact on the environment and thus also influence organisms. The formation of magmatic provinces repeated many times in the past. The best known are continental Deccan Traps in India and the most voluminous Siberian Traps. Oceanic LIPs are represented, e.g., by the Ontong Java Plateau in the west Pacific Ocean. There is a link in dating the emergence of large igneous provinces and mass extinctions. As an example, the largest known extinction at the end of Permian, which was broadly contemporaneous with the formation of the Siberian traps (approximately 250 Ma ago), or extensive loss of species on the boundary of Cretaceous / Tertiary, which coincides with the formation of the Dekkan in India (before about 65...
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Reconstruction of volcanic processes in the Komárov Complex: case from the Zaječov volcanic centre
Machalová, Jitka ; Rapprich, Vladislav (advisor) ; Fediuk, Ferry (referee)
Reconstruction of volcanic processes in the Komárov Complex: case from the Zaječov volcanic centre Summary Sheet lava flows with pillow breccias and hyaloclastites are interbedded agglomerate and volcaniclastics. This is the basic interpretation of rocks exposed in quarry near the town Zaječov. Rocks are part of geological area called Barrandien. Resediment volcaniclastic particles were transfer by sediment gravity flows. Agglomerates were deposited from volcaniclastic debris flow and fine grain volcanoclastics sediments from turbidity currents or hyperconcentrated flows. These types of flows named as eruption-fed aqueous density current are directly initiated by subaqueous volcanic eruption. One volcaniclastics strata set on the south wall of quarry was formed from subaquatic eruption plume, called steam copula. Steam copula created under the eruptive vent is water exclusion zone. Accretion lapilli can be formed in this zone if the copula is stable for a longer time. Accretion lapilli were generally considered to be able to form only in subaerial conditions, during the phreatomagmatic eruption till lately. Rocks exposed in quarry were probably formed during the Surtseyan eruption in shallow subaqueous setting. According to thin section lava flows are containing pseudomorphosis phenocrysts of olivine and...
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Mineral and chemical changes of magma crystallization during formation of post-Variscan intrusions and veins in the Moldanubian Zone of the Bohemian Massif
Kubínová, Šárka ; Faryad, Shah Wali (advisor) ; Rapprich, Vladislav (referee) ; Moyen, Jean-François (referee)
- 1 - English abstract The late-Variscan magnesium-rich potassic to ultrapotassic igneous rocks create numerous dykes, dyke swarms and several plutonic bodies at the boundary between the Moldanubian Zone and the Teplá-Barrandian Block of the Bohemian Massif. They represent a volumetrically smaller group of igneous rock but they are the key to understand generation of melt and processes of mantle metasomatism and shallow-level magma differentiation. In addition, they are considered as an indicator of the tectonic evolution of this part of the Bohemian Massif during the final stages of the Variscan orogenesis. Currently, they are the subject of discussion by several authors in terms of their genesis, emplacement time and geodynamic significance. The presented thesis is a compilation of four scientific publications that are aimed at the petrological study of selected (ultra)-potassic dyke rocks from several localities at the western border of the Moldanubian Zone. The study of mineral textures, mineral chemistry and whole-rock geochemistry together with magnetic fabrics, structural field relations and age determinations allowed us to describe the crystallization history of these rocks, discuss their evolution from melt generation to magma ascent and emplacement, and form the model of sequence of Variscan...
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Assessment of the suitability of the site for the location of the underground\nof SNF and RAW repository in terms of long-term safety - Horka site
Havlová, V. ; Pertoldová, J. ; Bukovská, Z. ; Hroch, T. ; Štědrá, V. ; Uhlík, J. ; Říha, J. ; Červinka, R. ; Baier, J. ; Buriánek, D. ; Černý, M. ; Dudková, I. ; Dušek, K. ; Franěk, J. ; Gondolli, J. ; Hokr, M. ; Holeček, J. ; Jankovec, J. ; Jelének, J. ; Jelínek, J. ; Kachlíková, R. ; Kaláb, Zdeněk ; Klajmon, M. ; Kolomá, K. ; Kouřil, M. ; Královcová, J. ; Kučera, R. ; Kunceová, E. ; Maryška, J. ; Milický, M. ; Nývlt, D. ; Ondra, P. ; Pacherová, P. ; Polák, M. ; Rapprich, V. ; Rukavičková, L. ; Steinová, J. ; Svoboda, J. ; Šír, P. ; Švagera, O. ; Vašíček, R. ; Vavro, Martin ; Vopálka, D. ; Zeman, J. ; Zeman, O.
This report summarises outline of a report for evaluation of the sites‘ suitability for the emplacement of a deep geological repository on the basis of the archive information and the geological survey conducted from surface.\nSites are evaluated according to the following criterion categories\n1. Geological characteristics of the site\n2. Hydrogeologic characteristics of the site\n3. Transport characteristics of the the site\n4. Site stability\n5. Factors, increasing probability of human intrusion into the site\n6. Acceptability of enginnered barrier properties under site conditions
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Assessment of the suitability of the site for the location of the SNF and RAW deep geological repository in terms of long-term safety - Dukovany - West site\n(EDU-Z).
Havlová, V. ; Pertoldová, J. ; Bukovská, Z. ; Hroch, T. ; Štědrá, V. ; Jankovec, J. ; Říha, J. ; Červinka, R. ; Černý, M. ; Dudková, A. ; Dušek, K. ; Franěk, J. ; Gondolli, J. ; Gvoždík, L. ; Hokr, M. ; Holeček, J. ; Hrdličková, K. ; Jelének, J. ; Jelínek, J. ; Kachlíková, R. ; Kaláb, Zdeněk ; Klajmon, M. ; Kolomá, K. ; Královcová, J. ; Kouřil, M. ; Kryštofová, E. ; Kučera, R. ; Kunceová, E. ; Maryška, J. ; Milický, M. ; Nývlt, D. ; Ondra, P. ; Pacherová, P. ; Polák, M. ; Rapprich, V. ; Rukavičková, L. ; Sedláčková, I. ; Vašíček, R. ; Vavro, Martin ; Vopálka, D. ; Uhlík, J. ; Zeman, J. ; Zeman, O.
This report summarises outline of a report for evaluation of the sites suitability for the emplacement of a deep geological repository on the basis of the archive information and the geological survey conducted from surface.\nSites are evaluated according to the following criterion categories\n1. Geological characteristics of the site\n2. Hydrogeologic characteristics of the site\n3. Transport characteristics of the the site\n4. Site stability\n5. Factors, increasing probability of human intrusion into the site\n6. Acceptability of enginnered barrier properties under site conditions
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Assessment of the suitability of the site for the location of the deep-water repository and RAW repository in terms of long-term safety - Čihadlo site
Havlová, V. ; Pertoldová, J. ; Bukovská, Z. ; Hroch, T. ; Štědrá, V. ; Polák, M. ; Říha, J. ; Červinka, R. ; Černý, M. ; Dudíková Schulmannová, B. ; Dudková, A. ; Dušek, K. ; Franěk, J. ; Gondolli, J. ; Gvoždík, L. ; Hokr, M. ; Holeček, J. ; Jankovec, J. ; Jelének, J. ; Jelínek, J. ; Kachlíková, R. ; Kaláb, Zdeněk ; Klajmon, M. ; Klomínský, J. ; Kolomá, K. ; Kouřil, M. ; Královcová, J. ; Kučera, R. ; Kunceová, E. ; Lednická, Markéta ; Maryška, J. ; Milický, M. ; Nývlt, D. ; Ondra, P. ; Rapprich, V. ; Rukavičková, L. ; Steinová, J. ; Svoboda, J. ; Šír, P. ; Švagera, O. ; Uhlík, J. ; Vašíček, R. ; Vavro, Martin ; Verner, K. ; Vopálka, D. ; Zeman, J. ; Zeman, O.
This report summarises outline of a report for evaluation of the sites suitability for the emplacement of a deep geological repository on the basis of the archive information and the geological survey conducted from surface.\nSites are evaluated according to the following criterion categories\n1. Geological characteristics of the site\n2. Hydrogeologic characteristics of the site\n3. Transport characteristics of the the site\n4. Site stability\n5. Factors, increasing probability of human intrusion into the site\n6. Acceptability of enginnered barrier properties under site conditions
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