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	Short-term cyclic paleoenvironmental variations in Middle Turonian hemipelagic deposits, Bohemian Cretaceous Basin Voženílková, Kristýna ; Uličný, David (advisor) ; Chadimová, Leona (referee) The sedimentary record of the Turonian substage (Upper Cretaceous) offers an opportunity to examine climatic variations in a time of peak greenhouse climate. In the Bohemian Cretaceous Basin, recent cyclostratigraphic studies examined the cyclic variations of sedimentary environments of the Lower and Upper Turonian, while the cyclostratigraphy of the Middle Turonian substage has remained less understood. This thesis applied methods of spectral analysis to well logs and elemental composition data from several boreholes located in the central part of the Bohemian Cretaceous Basin, in order to better understand the environmental variations of the Middle Turonian substage and their possible astronomical forcing. A short eccentricity (~100 kyr) signature has been found in well log data, as well as the carbonate content of the Bch-1 borehole section and correlated over more than 20 km within the study area. Biogenic carbonate production is considered to be the cause of astronomically controlled cyclicity in content of Ca (proxy for CaCO3). For most of the substage, the carbonate cyclicity was shown to be decoupled from clastic sediment input variations, except the basal part of the Middle Turonian succession where clastic proxies are in phase with carbonate variations. It is proposed that the... Detailed record
	Devonian of the Koněprusy area (Barrandian, central Bohemia) Polecha, Roman ; Vacek, František (advisor) ; Chadimová, Leona (referee) Detailed record
	Towards the Structures of the Carbonate Beds Rapidly Deposited from High-Density Suspensions: Experiments with Five Fractions of Angular Grains in a Settling Column Kulaviak, Lukáš ; Hladil, Jindřich ; Růžička, Marek ; Chadimová, Leona ; Slavík, Ladislav Two parallel series of experiments were run, one with differently coloured fractions and other with colourless fractions. First approach provided an easier visualization on particle distribution in the sediment using image analysis whereas the second helped to better identify the voids. Copmprehensive sets of results are illustrated in the poster. They provide another clue to understanding the different vertical successions and inner structures in these specific, event deposited beds. Fulltext: content.csg - PDF Plný tet: SKMBT_C22014081415010 - PDF Detailed record

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2	Chadimová, L.

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