Number of found documents: 175
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Mineralogic analyses of samples from karst sediments in Slovenia, 6. Final Report
Šťastný, Martin; Bosák, Pavel; Zupan Hajna, N.
2018 - English
Keywords: karst sediments; mineralogy; mineralogic analyses Available at various institutes of the ASCR
Mineralogic analyses of samples from karst sediments in Slovenia, 6. Final Report

Šťastný, Martin; Bosák, Pavel; Zupan Hajna, N.
Geologický ústav, 2018

Paleomagnetic research of the fill in the Kalacka Cave, Poland. Final report. Catalogue of primary paleomagnetic data.
Pruner, Petr; Čížková, Kristýna; Kdýr, Šimon
2017 - English
Keywords: palaeomagnetism; caves; Kalacka Cave, Poland Available at various institutes of the ASCR
Paleomagnetic research of the fill in the Kalacka Cave, Poland. Final report. Catalogue of primary paleomagnetic data.

Pruner, Petr; Čížková, Kristýna; Kdýr, Šimon
Geologický ústav, 2017

New data on the origin of the Fe-Cu-As skarn deposit at Obří důl, West Sudetes, Bohemian Massif
Pašava, J.; Veselovský, F.; Dobeš, P.; Erban, V.; Pour, O.; Žák, Karel; Ackerman, Lukáš; Haluzová, Eva; Creaser, R.; Tásler, R.
2017 - English
The Obří důl Fe-Cu-As sulfide deposit is hosted in metamorphosed lenses of marble, calc-silicate rocks and skarns. The deposit is located up to a few hundred meters away from the contact of the large, late-orogenic Variscan Krkonoše-Jizera Plutonic Complex (KJPC). Mineralogical and fluid inclusion studies of the Gustavská ore lens show that the main sulfide stage, dominated by pyrrhotite, chalcopyrite and arsenopyrite, originated from water-rich hydrothermal fluids with salinities up to 8 wt.% NaCl eq. at temperatures ranging from 324 to 358°C.These fluids replaced mainly the carbonate-rich lithologies. The 34S values indicate a magmatic source of sulfur and Re/Os dating of molybdenite are consistent with simultaneous formation of the main sulfide stage ore and the KJPC. Keywords: Obří důl; Bohemian Massif; West Sudetes Available at various institutes of the ASCR
New data on the origin of the Fe-Cu-As skarn deposit at Obří důl, West Sudetes, Bohemian Massif

The Obří důl Fe-Cu-As sulfide deposit is hosted in metamorphosed lenses of marble, calc-silicate rocks and skarns. The deposit is located up to a few hundred meters away from the contact of the ...

Pašava, J.; Veselovský, F.; Dobeš, P.; Erban, V.; Pour, O.; Žák, Karel; Ackerman, Lukáš; Haluzová, Eva; Creaser, R.; Tásler, R.
Geologický ústav, 2017

Palaeomagnetic research of cave fill in Hermanshöhle, Austria : final report
Bosák, Pavel; Pruner, Petr; Mock, A.
2014 - English
Zpráva je volně šiřitelná od roku 2015. Anotace: Detailed paleomagnetic analysis of sedimentary profile at Teichkluft showed that sediments are characterized by varying magnetic susceptibilities and NRM with increasing tendency of anisotropy parameter with increase of susceptibility. The component analysis identified 2 short R polarity intervals (0.41 m; 2.19–2.26 m) within samples with the N polarity. Rock magnetic and AMS measurements indicated mostly the presence of oblate, low coercivity magnetic fraction, presumably magnetite. However, the R polarity interval (2.19–2.26 m) revealed also other, higher coercivity fraction (maybe due to hematite/goethite content). The identity of this fraction is still unknown. The R polarity interval in 0.41 m represents a geomagnetic excursion without any doubt. The sedimentary profile with the R polarity interval in 0.41 m must be older than 162.7 ± 3.9 ka old topmost speleothem. The paleomagnetic directions (D, I) are very close to the present magnetic field. Therefore we assume deposition of studied sediments within the Brunhes chron (<780 Ka) and the excursion may be correlated with Jamaica-Pringle Falls (205–215 ka) or Calabrian Ridge 1 excursions (315–325 ka; Langereis et al. 1997). Other Th/U date was obtained at the tourist trail opposite to Teichkluft entrance (ca 495 ka +67/-41 ka) in an altitude corresponding to the top of the Teichkluft profile. This might indicate that the Teichkluft was completely or nearly completely filled twice (before 163 and ca 495 ka) and once completely excavated (between ca 205/325 and ca 495 ka). The fragments of cuticle of ring-like shape at the level of 2.30 m belongs to attemsiid millipedes. The probability that fragments represent Polyphematia moniliformis (Latzel, 1884; Diplopoda: Chordeumatida: Attemsiidae) known in the cave is high. It is supposed they are Tertiary relict (Mock and Tajovský 2008). It is not detected, if fragments represent relics of recent/subrecent animal Keywords: caves; paleomagnetic research; Hermannshöhle, Austria Available in a digital repository NRGL
Palaeomagnetic research of cave fill in Hermanshöhle, Austria : final report

Zpráva je volně šiřitelná od roku 2015. Anotace: Detailed paleomagnetic analysis of sedimentary profile at Teichkluft showed that sediments are characterized by varying magnetic susceptibilities and ...

Bosák, Pavel; Pruner, Petr; Mock, A.
Geologický ústav, 2014

Na Javorce Cave - a new discovery in the Bohemian Karst (Czech Republic): unique example of relationships between hydrothermal and common karstification.
Dragoun, J.; Žák, Karel; Vejlupek, J.; Filippi, Michal; Novotný, J.; Dobeš, J.
2013 - English
The Na Javorce Cave is located in the Bohemian Karst, Czech Republic, about 25 km SW of Prague. The cave was formed in vertically dipping layers of Lower Devonian limestone; it is 1,723 m long and 129 m deep, of which 9 m is permanently flooded. The cave is polygenetic, with several clearly separable evolutionary stages. Cavities discovered to date were mostly formed along the tectonic structures of two main systems. One of these systems is represented by vertical faults of generally N-S strike, which are frequently accompanied by vein hydrothermal calcite with crystal cavities. The second fault system is represented by moderately inclined west-dipping faults. Smaller tube-like passages of phreatic morphology connect the larger cavities. The fluid inclusion data obtained for calcite developed along both fault systems in combination with C and O stable isotope studies indicate that the hydrothermal calcite was deposited from moderately NaCl-type basinal fluids (0.5 to 8.7 wt. % NaCl equ Keywords: caves; karstification; karst; Bohemian Karst Available at various institutes of the ASCR
Na Javorce Cave - a new discovery in the Bohemian Karst (Czech Republic): unique example of relationships between hydrothermal and common karstification.

The Na Javorce Cave is located in the Bohemian Karst, Czech Republic, about 25 km SW of Prague. The cave was formed in vertically dipping layers of Lower Devonian limestone; it is 1,723 m long and 129 ...

Dragoun, J.; Žák, Karel; Vejlupek, J.; Filippi, Michal; Novotný, J.; Dobeš, J.
Geologický ústav, 2013

New localities of coarsely crystalline cryogenic cave carbonates in Slovakia
Orvošová, M.; Vlček, L.; Žák, Karel
2013 - English
Three new localities of coarsely crystalline cryogenic cave carbonates (CCCcoarse) have been recently discovered in the Western Carpathians, Slovakia. CCCcoarse are secondary mineral formations in the cave and belong to speleothems. They occur in the form of loose accumulations of calcite crystals and crystal aggregates freely deposited on the bottom of the cavities. Their genesis is interpreted as related to slow karst-water freezing in pools inside the caves, in relation to the existence of a permafrost zone during Quaternary glacials. The newly discovered CCCcoarse localities in Četníkova svadba Cave, Demänovská j. mieru Cave and Zlomísk Cave are characterized by description and photodocumentation of the present crystal forms, by preliminary C and O isotope data, and by their U-series ages. The ages of the cryogenic crystals are in the range between 47 and 12 ka BP, corresponding to the latter half of the Last Glacial. Any new locality of CCCcoarse formed during the Last Glacial represents an important source of information about paleoclimatic conditions of adjacent areas. The U-series ages of the new localities support the earlier conclusion that the formation of CCCcoarse is related to transitions from cold to warm climate periods within the Last Glacial. Keywords: caves; carbonates; cryogenic carbonates Available at various institutes of the ASCR
New localities of coarsely crystalline cryogenic cave carbonates in Slovakia

Three new localities of coarsely crystalline cryogenic cave carbonates (CCCcoarse) have been recently discovered in the Western Carpathians, Slovakia. CCCcoarse are secondary mineral formations in ...

Orvošová, M.; Vlček, L.; Žák, Karel
Geologický ústav, 2013

Miocene-Pliocene age of cave Snežna Jama na Raduhi, Southern Alps, Slovenia
Mihevc, A.; Horáček, I.; Pruner, Petr; Zupan Hajna, N.; Čermák, Stanislav; Wagner, Jan; Bosák, Pavel
2013 - English
Snežna jama cave is 1,600 m long horizontal cave at about 1,500 m a.s.l. in Raduha Massif (Kamnik-Savinja Alps) rich in cave deposits (both allogenic sediments and massive flowstones). The cave size, shape and deposits show (1) formation of the cave in different conditions, and (2) its substantial age. A 4.8 m deep pit was excavated in allogenic sediments. Samples were taken both for palaeomagnetic analysis and palaeontological screening. Sediments consist of rhythmically arranged layers deposited in phreatic conditions. Fragments of rodent teeth and a well-preserved molar of genus Baranomys were identified. Fossil remains indicate mammalian zone MN 16 and MN 14. A high-resolution palaeomagnetic analysis revealed total of 3 principal normal polarized and 2 principal reverse polarized magnetozones. If we accept the palaeontologic calibration, the deposition took place within Gauss and Gilbert chrons, from about 2.6 to more than 5 Ma. Long sedimentation period is in concordance with the cave rocky relief that shows phreatic and epiphreatic morphology and predates the main uplift of the area for about 900 m. Keywords: caves; karst; Miocene; Pliocene Available at various institutes of the ASCR
Miocene-Pliocene age of cave Snežna Jama na Raduhi, Southern Alps, Slovenia

Snežna jama cave is 1,600 m long horizontal cave at about 1,500 m a.s.l. in Raduha Massif (Kamnik-Savinja Alps) rich in cave deposits (both allogenic sediments and massive flowstones). The cave size, ...

Mihevc, A.; Horáček, I.; Pruner, Petr; Zupan Hajna, N.; Čermák, Stanislav; Wagner, Jan; Bosák, Pavel
Geologický ústav, 2013

16th International Congress of Speleology : Czech Republic, Brno July 21–28,2013 : proceedings
Filippi, Michal; Bosák, Pavel
2013 - English
Proceedings of the 16th International Congress of Speleology consist of 3 separate Volumes. The Congress was visited by 1007 participants from 53 countries across the world. Volume I starts with three plenary lectures representing three global cave and karst topics. Further it contains papers concerned with history of research, archeology, paleontology, topics focused on management and preservation of caves and karst areas and other social-related aspects and also it contains a small part devoted to extraterrestrial karst. Volume I is ended by a large portion of biology-oriented papers. Keywords: speleology; karstology; speleoarchaeology; biospeleology; ecosystem management; proceedings of conferences Available at various institutes of the ASCR
16th International Congress of Speleology : Czech Republic, Brno July 21–28,2013 : proceedings

Proceedings of the 16th International Congress of Speleology consist of 3 separate Volumes. The Congress was visited by 1007 participants from 53 countries across the world. Volume I starts with three ...

Filippi, Michal; Bosák, Pavel
Geologický ústav, 2013

16th International Congress of Speleology : Czech Republic, Brno July 21–28,2013 : proceedings
Filippi, Michal; Bosák, Pavel
2013 - English
Proceedings of the 16th International Congress of Speleology consist of 3 separate Volumes. The Congress was visited by 1007 participants from 53 countries across the world. Volume II contains the traditionally heavily attended session “Exploration and Cave Techniques” and by the related session “Speleological Research and Activities in Artificial Underground”. These topics are supplemented with contributions from the field of “Karst and Cave Survey, Mapping and Data Processing”. The content of the second Volume is completed with sessions “Modelling in Karst and Cave Environments” and “Cave Climate and Paleoclimate Record”. Keywords: speleology; karstology; modeling and simulation; proceedings of conferences Available at various institutes of the ASCR
16th International Congress of Speleology : Czech Republic, Brno July 21–28,2013 : proceedings

Proceedings of the 16th International Congress of Speleology consist of 3 separate Volumes. The Congress was visited by 1007 participants from 53 countries across the world. Volume II contains the ...

Filippi, Michal; Bosák, Pavel
Geologický ústav, 2013

Magnetic fabric and mineralogy of cave deposits in Botovskaya Cave (Eastern Siberia, Russian Federation)
Kadlec, Jaroslav; Hercman, H.; Chadima, Martin; Lisá, Lenka; Oberhänsli, H.; Osintsev, A.
2013 - English
The Botovskaya Cave is a typical example of a two-dimensional maze with a total length of explored passages exceeding 60 km, which represents the longest limestone cave system in the Russian Federation. The clastic cave sediments filling the cave passages differ in both mineral and mineral magnetic properties and were deposited under different hydrological conditions. The older portion of the clastic cave fills was derived from overlying sandstones, whereas the properties of younger cave sediments show closer affinity to the soils and weathering products originating on the sandstone plateau above the cave. The cave sediments underwent repeated periods of deposition and erosion during the Tertiary and Pleistocene. Keywords: caves; magnetic fabric; mineralogy; cave deposits Available at various institutes of the ASCR
Magnetic fabric and mineralogy of cave deposits in Botovskaya Cave (Eastern Siberia, Russian Federation)

The Botovskaya Cave is a typical example of a two-dimensional maze with a total length of explored passages exceeding 60 km, which represents the longest limestone cave system in the Russian ...

Kadlec, Jaroslav; Hercman, H.; Chadima, Martin; Lisá, Lenka; Oberhänsli, H.; Osintsev, A.
Geologický ústav, 2013

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