Detached house with hairdresser' in Velké Opatovice

Tato bakalářská práce řeší zpracování projektové dokumentace pro provádění stavby třípodlažního, částečně podsklepeného, rodinného domu s kadeřnictvím ve Velkých Opatovicích. Objekt je navržen v mírně svažitém terénu. Kadeřnictví je umístěno v 1NP a má samostatný vstup oddělený od bytové části. Bytová část je tvořena sklepy a hernou v suterénu, garáží, skladem zahradního nábytku a technickou místností v prvním nadzemním podlaží, větší bytovou jednotkou ve druhém nadzemním podlaží a podkrovním bytem ve třetím nadzemním podlaží.This bachelor’s thesis deals with the processing of project documentation for three-storey, semi-basement, detached house with hairdresser’s in Velke Opatovice. The building is designed slightly sloping terrain. The hairdresser’s is located on the ground floor and has its own entrance separated from the residential part. The residential part is made of cellars and play room in the basement, garage, garden furniture storage and utility room on the ground floor, a larger residential unit on the second floor and the attic flat on the third floor.

Blow Hole Cave: An Unroofed Cave on San Salvador Island, the Bahamas, and its Importance for Detection of Paleokarst Caves on Fossil Carbonate Platforms

Prispevek obravnava podobnosti v razvoju krasa kvartarne karbonatne platforme na otoku San Salvador in devonske karbonatne platforme na platoju Krásná na Moravskem. Za obe območji so značilne jame, katerih nastanek lahko razložimo s "flank margin" modelom in so nastale v območju sladkovodnih leč med obdobji relativno visoke morske gladine, v času relativno stabilne halokline, kar potrjujejo različne študije jamskih zapolnitev. V obeh primerih so jamske sedimentne zapolnitve genetsko primerljive - obalni in eolski sedimenti ter breče.The comparative study of a Quaternary carbonate platform (San Salvador Island, the Bahamas) and a Devonian Carbonate Platform (Krásná Elevation, Moravia) indicates a great similarity in karst evolution. Caves on both sites are interpreted as flank margin caves associated with a freshwater lens and halocline stabilised during sea-level highstands. The sedimentary fill of both caves is genetically comparable - beach and aeolian sediments with bodies of breccias

NÁLEZY BADENSKÝCH FOSÍLIÍ V JESKYNI SVÁŽNÁ STUDNA, MORAVSKÝ KRAS – DŮSLEDKY PRO SPELEOGENEZI

Relatively rich macrofauna and microfauna of Badenian age was found in a depth of 25–32 m in a vertical cave Sváná studna (Moravian Karst). The cave was excavated downwards from a sinkhole situated at the foot of upper part of the valley (canyon). The lower part of the canyon is filled with more than 100m thick marine Badenian clays with horizons of volcanic tuffites. The stage of preservation of macrofauna and microfauna suggests very little or no transport and thus primary sedimentation in pre-Badenian cavities

The Paleozoic record of Thaumatoporella PIA, 1927?

From Palaeozoic (mainly Devonian) shallow-water carbonates, spherical to irregular shaped microfossils with thin, apparently homogeneous or perforate micritic walls are widely reported. They are classically referred either to unilocular parathuramminid foraminifera, algae incertae sedis or calcispheres (e.g., Bisphaera, Cribrosphaeroides, Uslonia, Vermiporella myna, Irregularina). Due to their morphology and microstructural features, they are here reassessed more accurately as belonging to Thaumatoporella PIA, a widespread Mesozoic-Early Cenozoic taxon of incertae sedis showing a remarkably high morphological variability. In analogy to Mesozoic thaumatoporellaceans, Bisphaera malevkensis BIRINA is interpreted as the cyst (= resting) stage of forms ascribed to different genera, i.e., Cribrosphaeroides, Uslonia and Vermiporella (here: Vermiporella myna WRAY). This new interpretation leads to taxonomic reassessment as Thaumatoporella malevkensis (BIRINA) nov. comb. As a consequence of our interpretation, the rather long Mesozoic to Early Cenozoic (Ladinian to Early Ypresian) record of thaumatoporellaceans is supposed to be significantly larger than formerly assumed, showing four periods of increased abundance in the Middle/Late Devonian, Late Permian (?), Early/Middle Jurassic and Late Cretaceous time windows. </span

Geological structure of the Macocha Abyss in the Moravian Karst on the basis of structural and stratigraphic research

The main concern of this study is the tectonics of the Macocha Abyss (Macocha Chasm) and a part of the Punkva Cave in the Moravian Karst. Two systems of subvertical faults with NNE–SSW and NW–SE strike are the most important for the genesis of the abyss. The third system (related to décollements) strikes NE–SW and dips 40 to 60 degrees to the SE. The intersection of these three systems was crucial for the collapse of the roof of the original cave dome and the genesis of the abyss. These structures were formed during the Variscan orogeny but modified during the Alpine orogeny. A 3D model of the Macocha Abyss based on a geodetic surveying is presented.The main concern of this study is the tectonics of the Macocha Abyss (Macocha Chasm) and a part of the Punkva Cave in the Moravian Karst. Two systems of subvertical faults with NNE–SSW and NW–SE strike are the most important for the genesis of the abyss. The third system (related to décollements) strikes NE–SW and dips 40 to 60 degrees to the SE. The intersection of these three systems was crucial for the collapse of the roof of the original cave dome and the genesis of the abyss. These structures were formed during the Variscan orogeny but modified during the Alpine orogeny. A 3D model of the Macocha Abyss based on a geodetic surveying is presented

Osmium and lithium isotope evidence for weathering feedbacks linked to orbitally paced organic carbon burial and Silurian glaciations

The Ordovician (∼487 to 443 Ma) ended with the formation of extensive Southern Hemisphere ice sheets, known as the Hirnantian glaciation, and the second largest mass extinction in Earth History. It was followed by the Silurian (∼443 to 419 Ma), one of the most climatically unstable periods of the Phanerozoic as evidenced by several large scale (> 5‰) carbon isotope (δ13C) perturbations associated with further extinction events. Despite several decades of research, the cause of these environmental instabilities remains enigmatic. Here, we provide osmium (187Os/188Os) and lithium (δ7Li) isotope measurements of marine sedimentary rocks that cover four Silurian δ13C excursions. Osmium and Li isotope records resemble those previously recorded for the Hirnantian glaciation suggesting a similar causal mechanism. When combined with a new dynamic carbon-osmium-lithium biogeochemical model we suggest that astronomical forcing of the marine organic carbon cycle, as opposed to a decline in volcanic arc degassing or the rise of early land plants, resulted in drawdown of atmospheric CO2, triggering continental scale glaciation, intense global cooling and eustatic sea-level lows recognised in the geological record. Lower atmospheric pCO2 and temperatures during the Hirnantian and Silurian glaciations suppressed CO2 removal by silicate weathering, driving 187Os/188Os and δ7Li variability, supporting the existence of climate-regulating feedbacks

Refining the Early Devonian time scale using Milankovitch cyclicity in Lochkovian–Pragian sediments (Prague Synform, Czech Republic)

The Early Devonian geological time scale (base of the Devonian at , Becker et al., 2012) suffers from poor age control, with associated large uncertainties between 2.5 and 4.2 Myr on the stage boundaries. Identifying orbital cycles from sedimentary successions can serve as a very powerful chronometer to test and, where appropriate, improve age models. Here, we focus on the Lochkovian and Pragian, the two lowermost Devonian stages. High-resolution magnetic susceptibility ( – 5 to 10 cm sampling interval) and gamma ray spectrometry (GRS – 25 to 50 cm sampling interval) records were gathered from two main limestone sections, Požár-CS (118 m, spanning the Lochkov and Praha Formations) and Pod Barrandovem (174 m; Praha Formation), both in the Czech Republic. An additional section (Branžovy, 65 m, Praha Formation) was sampled for GRS (every 50 cm). The and GRS records are very similar, so variations are driven by variations in the samples' paramagnetic clay mineral content, reflecting changes in detrital input. Therefore, climatic variations are very likely captured in our records. Multiple spectral analysis and statistical techniques such as: Continuous Wavelet Transform, Evolutive Harmonic Analysis, Multi-taper method and Average Spectral Misfit, were used in concert to reach an optimal astronomical interpretation. The Požár-CS section shows distinctly varying sediment accumulation rates. The Lochkovian (essentially equivalent to the Lochkov Formation (Fm.)) is interpreted to include a total of nineteen 405 kyr eccentricity cycles, constraining its duration to . The Praha Fm. includes fourteen 405 kyr eccentricity cycles in the three sampled sections, while the Pragian Stage only includes about four 405 kyr eccentricity cycles, thus exhibiting durations of and respectively. Because the Lochkov Fm. contains an interval with very low sediment accumulation rate and because the Praha Fm. was cross-validated in three different sections, the uncertainty in the duration of the Lochkov Fm. and the Lochkovian is larger than that of the Praha Fm. and Pragian. The new floating time scales for the Lochkovian and Pragian stages have an unprecedented precision, with reduction in the uncertainty by a factor of 1.7 for the Lochkovian and of ∼6 for the Pragian. Furthermore, longer orbital modulation cycles are also identified with periodicities of ∼1000 kyr and 2000–2500 kyr

Osmium and lithium isotope evidence for weathering feedbacks linked to orbitally paced organic carbon burial and Silurian glaciations

The Ordovician (∼487 to 443 Ma) ended with the formation of extensive Southern Hemisphere ice sheets, known as the Hirnantian glaciation, and the second largest mass extinction in Earth History. It was followed by the Silurian (∼443 to 419 Ma), one of the most climatically unstable periods of the Phanerozoic as evidenced by several large scale (>5‰) carbon isotope (δ13C) perturbations associated with further extinction events. Despite several decades of research, the cause of these environmental instabilities remains enigmatic. Here, we provide osmium (187Os/188Os) and lithium (δ7Li) isotope measurements of marine sedimentary rocks that cover four Silurian δ13C excursions. Osmium and Li isotope records resemble those previously recorded for the Hirnantian glaciation suggesting a similar causal mechanism. When combined with a new dynamic carbon-osmium-lithium biogeochemical model we suggest that astronomical forcing of the marine organic carbon cycle, as opposed to a decline in volcanic arc degassing or the rise of early land plants, resulted in drawdown of atmospheric CO2, triggering continental scale glaciation, intense global cooling and eustatic sea-level lows recognised in the geological record. Lower atmospheric pCO2 and temperatures during the Hirnantian and Silurian glaciations suppressed CO2 removal by silicate weathering, driving 187Os/188Os and δ7Li variability, supporting the existence of climate-regulating feedbacks