Browsing by Subject "granite"

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Albitized zones of the Strzeblów granite deposit REE-Y-Sc-Nb-Ta mineralization characteristics
(Data obrony: 2018-11-05) Zych, Filip
Wydział Geologii, Geofizyki i Ochrony Środowiska
Rock samples were collected in the active granite mine to investigate the REE-Y-Sc-Nb-Ta mineralization. Each of the collected samples present a different level of transformation, from rocks virtually unchanged to completely transformed rocks. The most important process that manifests itself in the enrichment of rare earth elements is albitization. During the albitization processes, almost all elements that deplete or enrich the modified granite have been activated. The main recognized carriers of Nb-Ta-REE are monazite, pyrochlore, cheralite and xenotime. Monazite and pyrochlore found in Strzeblów have a typical chemical composition with a few exceptions where monazite contains additional amount of thorium. An increased amount of thorium and hafnium was also observed in zircone.
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Geologiczne uwarunkowania zastosowania kamienia w ogrodach Krakowa
(Data obrony: 2013-01-16) Woźniak, Elżbieta
Wydział Geologii, Geofizyki i Ochrony Środowiska
Jobs aims to provide the geological conditions of use of natural stone in the gardens of the city. For this purpose, the position described, geomorphology, geology, climate and hydrography study area. It also discusses the factors damaging the stones and signs of destruction. Describes the various parks and gardens, taking into account their location, year of establishment, and the use of natural stone. Next, a study water absorption, apparent density and microscopic observations. On the basis of the conclusions concerning the origin of the rocks and their behavior now and in the future.
Access status: Open Access ,
Granite tors of Waldviertel (Lower Austria) as sites of geotourist interest
(2015) Michniewicz, Aleksandra; Różycka, Milena; Migoń, Piotr
Granites of the South Bohemian Pluton are among the main rocks in the region of Waldviertel in the northern part of Lower Austria. The overall topography is gently rolling, with higher elevations and medium-altitude mountainous relief present only in the south-western part. Tors are the most characteristic residual landforms and occupy different settings, from mountain tops to valley floors. They vary in shapes and dimensions, with castle koppies and boulder clusters being most common. Many tors host well-developed microforms such as weathering pits, karren, runnels, and flared slopes. Balanced rocks are among the highlights of the region. Because of good access residual granite landforms of Waldviertel are well suited to be developed as geosites and geotourist destinations, but there is clearly a deficit of explanation and interpretation. In this paper 15 representative tors are presented, tourist infrastructure is summarized, and a thematic one-day drive is proposed.
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Petrograficzne uwarunkowania przydatności wybranych skał magmowych i metamorficznych do produkcji kruszyw, w odniesieniu do nowych wymagań Ogólnych Specyfikacji Technicznych GDDKiA
(Data obrony: 2017-12-04) Bielecki, Przemysław
Wydział Geologii, Geofizyki i Ochrony Środowiska
Praca dotycząca kruszywa granitowego ze złoża Wieśnica oraz amfibolitowego ze złoża Ogorzelec. Kruszywo granitowe podzielono na trzy odmiany petrograficzne: niezmienione, zwietrzałe i zgnejsowane. Wyniki badań petrograficznych odniesiono do wyników badań właściwości fizyko-mechanicznych badanego kruszywa. Wykazano wpływ procesów wietrzeniowych, objawiających się głównie serycytyzacją skaleni alkaicznych i plagioklazów, na pogorszenie parametrów fizyko-mechanicznych granitu ze złoża Wieśnica. Ustalono, że obie badane próbki kruszywa spełniają wymagania stawiane przez Ogólną Specyfikację Techniczną GDDKiA, dotyczącą betonu konstrukcyjnego stosowanego w budownictwie mostowym.
Access status: Open Access ,
Wybrane przykłady kamienia naturalnego z Włoch i Niemiec zastosowane w obiektach architektonicznych Krakowa - krótka wycieczka geologiczna
(Wydawnictwa AGH, 2009) Górny, Zbigniew
The aim of the following paper is to propose a trip to selected sites in Kraków where decorative stones imported from Italy and Germany were used. The main types of stones are presented together with their commercial names, quarries, age and decorative values. Additionally, the author identified the regions in Italy and Germany from which stones were supplied. The most popular Italian decorative stones are the Carrara marbles quarried in the vicinity of Carrara and the »Ammonitico rosso« limestones extracted in the neighbourhood of Verona. Interesting are also porphyries from Trident, limestones from Brescia, travertines from Tivoli and granites and travertines quarried in Sardynia. In Germany large deposits of Upper Jurassic limestones are located in northern Bavaria (Franconia).
Access status: Open Access ,
Wybrane, nowe propozycje atrakcji geoturystycznych z Dolnego Śląska
(2010) Lorenc, Marek Wojciech; Mazurek, Sławomir
The Lower Silesia is the region of the largest diversity of igneous, sedimentary and metamorphic rocks used for construction and decoration. These rocks are extracted in numerous quarries, which are generally inaccessiblefor tourists. Hence, the educationally important, unique or just interesting sites remain unknown and cannot be included into the educational activity. However, there is a great number of abandoned quarries, which have been densly vegetated since the closure and which were rather distant from popular tourist trails. Among them are many sites of significant historical value due to the age of exploitation or particular stones then used for construction of important historical monuments or for carving the stonework or sculpture masterpieces. The following paper presents the currently operating quarries with the reference to modern buildings in Wroclaw, in which specific stones were used. Moreover, the abandoned quarries were described, which may become tourist and geotourist attractions if properly developed and provided with relevant information.