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Mineral waters in the Bad Brambach - Skalná area, the current knowledges.
Turnová, Štěpánka ; Goliáš, Viktor (advisor) ; Hrkal, Zbyněk (referee)
This paper summarizes the findings of the mineral waters around Skalná - Bad Brambach. Bad Brambach are radon spa that work here since 1912. Source Wettinquelle is one of the strongest radon springs in the world. Around Skalná is anomalous quantities of uranium, however, that there occurs in such small particles that netěžitelné. Radon is a decay product of U238 series. Within the study area is also NPR Soos, who is known moffetes, but there also are so-called diatomaceous peak which is a dry salt lake containing diatoms. Area of the Nový Kostel is the area with the most frequent occurrence of earthquakes in the Czech Republic. Several earthquake swarms were recorded as well as the local populations. Recent earthquake activity has been recorded in 2011. There are also several other spa municipal Františkovy lázně, Mariánske lázně, Karlovy Vary and other radon baths, which already are but a little further, Jáchymov.
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Geological and geophysical exploration of the Kokonín fault for building constructions (Jablonec n. Nisou, Czech Republic)
Tumurkhuu, Gereltsetseg ; Goliáš, Viktor (advisor) ; Thinová, Lenka (referee)
Radioactivity is an important part of the environment. In the years 2014 - 2015 a survey on medicinal radioactive springs was carried out in the Tanvald granite body. During extensive radiohydrogeochemical exploration in the surrounding area of Schindler spring, the outcrop of U - mineralization has been found at a new construction site in the Kokonín fault. It is possible to find "hot" pieces of uranium ore fragments in the quaternary cover in this place. The occurrence of the hydrothermal (vein) type of uranium in the Krkonoše - Jizera is new as it hasn't been mentioned in literatures before. After an agreement with the owners, detailed radiometric survey proceeded in the surrounding area of two affected houses by using gamma spectrometry and emanometry at the dense net. There is a wider area between two houses with activities of 222 Rn over 1 MBq/m3 and on the ore outcrop was measured 3.3 MBq/m3 . A quaternary solifluction flow with an increased radioactivity creeps down under the House 1. The highest uranium contents reached up to 291 ppm eU (= 3 595 Bq/kg 226 Ra) on the uranium ore lens outcrop. The average of gamma dose rate is 85,6 nGy/h with maximem 261 nGy/h on the outcrop. A further radiometric survey through the entire Kokonín fault line was carried out in an area of roughly 0.25 x 1 km2...
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Springs of the radioactive mineral waters on Tanvald granite
Kohn, Pavel ; Goliáš, Viktor (advisor) ; Vylita, Tomáš (referee)
In the years 2014-2015 a radiohydrogeochemical survey was carried out in the Tanvald granite body. Tanvald granite is a two-mica granite body located on the southern edge of the Krkonoše-Jizera Pluton, in the Lusatian part of the Saxony and Thuringian zone of the Variscan orogenic belt. The aim of the survey was to find radioactive water, the 222 Rn volume activity of which exceeds 1500 Bq/l. Such water is - under the Act no. 164/2001 Coll. - considered as radioactive mineral water. The result was a found of 20 water sources meeting this condition and many other sources approaching this value. In terms of the findings, the most important area is Dlouhý Most, where 8 of the radioactive water resources exceeding 1500 Bq/l were found. The most important of these is probably the source TGR/11 with the 222 Rn volume activity 2449 Bq/l. A cluster of water sources with a slightly higher conductivity (exceeding 300 µS/cm) appears in the Dlouhý Most area. Chemical analysis of the most important of them (TG1/15) showed that it is water of the Na-Ca-Cl type, probably contaminated by a run-off from the motorway, which is salted in winter. Another important site is the Kokonín fault area. At this important geological structure a total of four springs of radioactive water with the 222 Rn volume activity greater...
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Dating of uranium secondary minerals by the Thermal ionization mass spectrometry and α-spectroscopy
Roll, Michal ; Goliáš, Viktor (advisor) ; Strnad, Ladislav (referee)
SUMMARY: This paper is focused on analytical methods, specifically on thermal ionization mass spectrometry and alpha spectrometry; both methods are often use for dating of minerals or rocks. Goal of this paper is to compare these methods and decide which one is more suitable for dating of secondary uranium minerals. Methods are completely different and we judge them closely and take into account every fact not just technical skills as accuracy or speed which are in favor of thermal ionization mass spectrometry, but also device availability, price or published researches which are in favor of alpha spectrometry. There is also suggestion that both methods can cooperate and it seems as most effective way and there is another suggestion how studies a secondary uranium minerals.
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Lead isotopes and 210 lead in recent galenas of the Lower Silesia basin
Čurda, Michal ; Goliáš, Viktor (advisor) ; Plášil, Jakub (referee)
This thesis deals with the isotopic composition of lead and 210 lead in recent galena from burning heaps after coal mining in the Lower Silesian basin. The studied sites were heaps in Radvanice, Markoušovice and Rybníček, where samples of galena, coal and burnt rocks were available. For the determination of the isotopic composition was used mass spectrometry with inductively coupled plasma (ICP - MS). Mass 210 Pb activity in galena was measured in a gamma - spectrometer Silar and the effect of radioactivity on galena crystal lattice was determined by the modified Williamson - Hall graph which was made from taken X-ray diffraction data. The values of isotope ratios in galena ranged for 207 Pb/206 Pb = 0,8402 to 0,8435 and for 208 Pb/206 Pb = 2,0663 to 2,0836. The average values of the coal were measured for 207 Pb/206 Pb = 0,8312 and 208 Pb/206 Pb = 2,0421. On the basis of these isotope ratios was found out that during the burning of coal and subsequent galena crystallization from hot gases there is no isotopic fractionation. Mass 210 Pb activity in galena ranged from 135 ± 9 Bq/g to 714 ± 22 Bq/g. Radioactivity of galena causes the developement of micro-deformation in the crystal structure. This micro-deformation is demonstrated by increased micro-strain in the crystal lattice. The level of this...
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Contamination of floodplain of the Ploucnice by heavy metals: relation to its architecture
Hošek, Michal ; Goliáš, Viktor (advisor) ; Kříbek, Bohdan (referee)
Summary: This thesis is focused on mapping of contaminants released into the environment probably due to uranium mining. These chemical contaminants are used to reconstruct the sedimentary processes. The aim of the thesis was both the geochemical assessment of the situation in the catchment area of the Ploucnice River in Boreček using the flood sediments from the research points as sedimentary archives pollution for last decades. With depth profiles, gamma wire log, XRF and enrichment factors (LEF), we have tried to perform chemostratigraphic correlation of the sediments. As target elements U, Ba, Zn and Ni were chosen, whose concentrations are related to the grain size of the sediment. Furthermore, the theory of secondary pollution is developed.
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Mongolian uranium deposits
Tumurkhuu, Gereltsetseg ; Goliáš, Viktor (advisor) ; Zachariáš, Jiří (referee)
Mongolia is a landlocked country, located in northeast Asia between Russia and China. The country has a total area of 1 565 600 kmš and shares a 4 673 km long border with China on its eastern, western and southern sides and a 3 485 km long border with Russia to the north. The mining sector is the single largest industry of Mongolia, accounting for 55 % of industrial output and more than 40 % of export earnings. Prior to 1970, Mongolia was not able to develop its vast mineral resources due to a lack of infrastructure and lack of financing for mineral resource development. However, beginning in 1970, numerous deposits of copper, gold, fluorspar, uranium, and coal were developed by joint ventures formed in partnership with the Soviet Union and its allies. Increased nuclear electricity generation in Asia presents uranium suppliers such as Mongolia with an opportunity to develop its uranium and nuclear industry. This Bachelor thesis "Mongolian uranium deposits" deals with the geology and mineralogy of uranium deposits in Mongolia. It shows a current capacity of uranium reserves and possible resources and also inquiries into the future.
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Radioactive accessory minerals in granitoids and its changes during metamorphosis and alteration.
Tuhý, Marek ; Goliáš, Viktor (advisor) ; Matějka, Dobroslav (referee)
This paper is focused on gathering information about alterations of radioactive accessory minerals in granitic rocks. These minerals become unstable during the influence of fluids and increased temperature and pressure conditions. Allanite is usually metamict therefore it is more easily altered than others. Alteration of monazite is described as decomposing original grains which leads to the formation of secondary minerals such as allanite, apatite, minerals of thorium and epidote. Zircon is the most durable mineral mentioned in this paper. Zircon is altered mainly if it is metamict. Majority of authors agree that during alteration uranium is mobilized into fluids and thorium with REE is incorporate into the secondary minerals.
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Contamination of foodplain of the Ploučnice river by heavy metals: relation to its architecture
Hošek, Michal ; Goliáš, Viktor (advisor) ; Kříbek, Bohdan (referee)
Summary: This thesis is focused on mapping of contaminants released into the environment probably due to uranium mining. These chemical contaminants are used to reconstruct the sedimentary processes. In the thesis we evaluate geochemical situation in the catchment area in the locality Borecek (part of the municipality Ralsko) using the overbank sediments as sedimentary archives of pollution during the last decades by elements U, Ba, Zn, Ni and 226 Ra. A map of aerial survey of gamma activity was used to select the area of interest, for more accurate localisation we used a surface gamma spectrometry. On Borecek we retrieved ten depth profiles of alluvial sediments (up to 230 cm) and one in Mimon, all samples were subjected to X-ray fluorescence spectral analysis (XRF), across the floodplain we performed gamma wire logs. For interpretations of floodplains architecture electrical resistivity tomography (ERT) was used and selected profiles were analysed for the activity of 226 Ra and 210 Pb. Interrelation of 226 Ra and Ba proved that radiobarite is the main source of the gamma activity. 210 Pb / 226 Ra ratio was used as sediment age indicator. With enrichment factor (LEF), we performed chemostratigraphic correlation of the sediments, for that the concentration of the target elements is corrected for varying...
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Springs of the radioactive medicinal water in the Lázně Libverda - Świeradów-Zdrój area
Hrušková, Lenka ; Goliáš, Viktor (advisor) ; Vylita, Tomáš (referee)
The main radionuclide causing high water radiation is 222 Rn with half-life 3.82 days. Concentrations of radon in radioactive mineral water in the Krkonoše-Jizera Crystalline Complex are very high and do not correspond with the concentration of uranium in the source rocks. These springs probably well up near the uranium mineralisation. Search for radioactive mineral water started in 2005 in Orlice- Sněžník Dome built by orthogneisses, which was the first promising area for such research. The research continued to the areas of Jánské Lázně and Horní Malá Úpa built by the Krkonoše orthogneisses in the next few years. In the last two years research was conducted in Lázně Libverda. Until then there were only a few known springs with radioactive mineral water. Lázně Libverda-Świeradów-Zdrój area is located in the Krkonoše-Jizera Crystalline Complex built by Cambrian/Ordovician orthogneisses and Variscan granite pluton. Jizera orthogneisses and the contact of these two objects were considered to be very promising in terms of finding springs of the radioactive medicinal water. Another criterion for a successful exploration is also an abnormal tectonic deformation of the zone. Uranium exploration was also conducted in 1950s, so we could use data available from the emanatory survey on a scale of 1:5000 and...
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