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2. Dekorační kámen v děkanském kostele Panny Marie Sněžné v Rokycanech /

Creator:
Lang, Martin,
Type:
studie
Subject:
Sochařství, keramika, porcelán, umělecké zpracování kovů, kostely, architektura barokní, kámen ozdobný, vápenec, petrografie, české země 1740-1792, církevní architektura, hmotné památky, hřbitovy a poutní místa, and architektura, architekti
Language:
Czech
Description:
Decorative stone at the decanal church of Our Lady of the Snow in Rokycany.
Rights:
unknown

3. Detailed brittle tectonic analysis of the limestones in the quarries near Vápenná village (case study)

Creator:
Nováková, Lucie
Format:
print, bez média, and svazek
Type:
article, články, model:article, and TEXT
Subject:
Geologie. Meteorologie. Klimatologie, vápenec, lomy, limestones, quarries, Vápenná (Česko), Vápenná (Czechia), brittle tectonics, paleostress analysis, Branná group, 7, and 551
Language:
English
Description:
This paper describes limestone body situated in the northern part of the Branná group near Vápenná village in Javorník area. The body is confined by two major tectonic zones of this area - Sudetic Marginal Fault on the east and Ramzová overthrust on the south. Detailed tectonic analysis has been performed in two big limestone quarries named quarry I and II. Strikes and dips of fault planes and joints were measured. In the quarry I just one important orientation of the fault planes was found - WE mostly vertical. In the quarry II two main fault plane orientations were observed - vertical NW-SE Sudetic and NE-SW Moravo-Silesian. The senses of movements in the fault planes were determined using the calcite steps mainly as the kinematic indicators. Presence of the kinematic indicators allowed performing of paleostress analysis. Several different tectonic phases were identified and discussed., Lucie Nováková., and Obsahuje bibliografii
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

5. Lanthanide tetrad effect in limestone: a tool to environment analysis of the ruteh formation, NW Iran

Creator:
Abedini, Ali, Rezaei Azizi, Mansour, and Calagari, Ali Asghar
Format:
print, bez média, and svazek
Type:
model:article and TEXT
Subject:
vápenec, limestones, Írán, Iran, REE, tetrad effect, chemical environment analysis, 7, and 551
Language:
English
Description:
Exhibition of lanthanide tetrad effect in PAAS-normalized REE patterns, and non-CHARAC (non-CHArge-RAdius Control) behavior of Y/Ho and Zr/Hf in limestone of the Ruteh Formation, Kanigorgeh district (NW Iran), were studied in order to understand the reasons of occurrence of lanthanides tetrad effects. The computed values show that the third and fourth tetrads can be used as a good and powerful geochemical tool for investigation of physicochemical conditions of the depositional environment of the limestones. Here, a new mathematical-based method using polar coordination system for tetrad effect values (Tp) was used to evaluate under studying limestone. The correlation between Tp and some geochemical parameters revealed that the limestone was likely deposited under two different conditions. The obtained results indicated that paleo-redox conditions, adsorption and scavenging by kaolinite and metallic oxides, degree of detrital input, diagenesis intensity, and complexation by polycarbonate ligands are likely the main mechanisms for occurrence of tetrad effect phenomenon in REE distribution patterns in the limestone. This means that tetrad effect phenomenon in REE distribution patterns of limestone can be applied as a good geochemical indicator to evaluate the deposition conditions in limestones., Ali Abedini, Mansour Rezaei Azizi and Ali Asghar Calagari., and Obsahuje bibliografii
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

7. Main directions of the fractures in the limestone and granite quarries along the Sudetic Marginal fault near Vapenná village, NE Bohemian Massif, Czech Republic

Creator:
Nováková, Lucie
Format:
print, bez média, and svazek
Type:
article, články, model:article, and TEXT
Subject:
Geologie. Meteorologie. Klimatologie, vápenec, lomy, žuly, limestones, quarries, granites, Česká vysočina (pohoří), Bohemian massif, brittle tectonics, racture, Sudetic Marginal fault, 7, and 551
Language:
English
Description:
A brittle tectonic study has been carried out in the crystalline limestone and granite quarries near Vápenná village in the Rychlebské hory Mts. in the NE part of the Bohemian Massif. The quarries are situated along the Sudetic Marginal fault zone - the most important tectonic structure of the area. At the lo cality, the Sudetic Marginal fault separates Devonian crystalline limestones of the Branná group and Paleozoic granites of the Žulová pluton. Hundreds of measurements of joints and small-scale faults were taken in three limestone quarries on the west side of the fault. Kinematic indicators were observed as well. Equivalent measurements and observations have been performed on the fault east side in several small granite quarries. In the limestones three sets of fault have been identified (the W-E subvertical, the Sudetic NW-SE falling 45° to NE and the N-S falling 75° to W). The W-E direction of faults is the most importa nt direction there. There are two sets of faults in the granites (the subvertical Moravo-Silesian NE-SW and the Sudetic NW-SE). The NE-SW direc tion is dominant. There are almost none subhorizontal faults in the studied area., Lucie Nováková., and Obsahuje bibliografické odkazy
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

10. Weathering by dolomite dissolution reponsible for the formation of an important palaeotological locality in the Prague Synform

Creator:
Rowberry, Matt, Dubois, Caroline, Kaufmann, Olivier, Baele, Jean-Marc, and Jan Blahůt
Format:
print, bez média, and svazek
Type:
model:article and TEXT
Subject:
spodní devon, vápenec, lower devon, limestones, Slivenec (Praha, Česko), Prague (Czechia), Slivenec (Prague, Czechia), carbonate rock weathering index, polarising light microscopy, cathodoluminescence microscopy, calcite dissolution, dolomite dissolution, Prague Synform, 7, and 551
Language:
English
Description:
Karst landforms can result from a single stage process in which chemical dissolution and mechanical erosion proceed simultaneously or from a two stage process in which chemical dissolution precedes mechanical erosion. During the second of these processes, chemical dissolution leads to the creation of karst features hosting a residual weathering product, here referred to as alterite. An example of one such feature is the enclosed mass of altered rock at Červený Quarry near Klukovice which represents one of the richest localities for exceptionally preserved echinoderm ossicles in the Prague Synform. In this study the processes responsible for the formation of this feature have been investigated. Nineteen samples were obtained from the bioclastic Slivenec Limestone and from these it has been possible to calculate the carbonate volume content, which defines the weathering intensity, and the carbonate rock weathering index, which defines the weathering state. The results demonstrate that carbonate dissolution has not been accompanied by gravitational compaction or the incorporation of mineral inputs. Thin sections analysed under polarised light and under cathodoluminescence emphasise heterogeneous dolomitisation of the limestone. As the weathering grade intensifies, empty rhomboidal pores become increasingly common until, ultimately, the rhomboidal forms are lost due to corrosion and enlargement. In contrast it is rare to find evidence of calcite dissolution and, therefore, the altered mass still hosts almost all of its post dolomitisation micrite, sparite, and bioclasts. Negligible calcite dissolution helps to explain the exceptional nature of the fossil preservation at the site while the dolomite dissolution accounts for the ease with which it is possible to extract the fossils. Further research should focus on better understanding the role of dolomite dissolution in the formation of other important palaeontological localities in the Prague Synform., Matt Rowberry, Caroline Dubois, Olivier Kaufmann, Jean-Marc Baele and Jan Blahůt., and Obsahuje bibliografii
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public