Differential subsidence in the Variscan foreland of Moravia, biostratigraphy, facies and conodont reworking in Mississippian gravity-flow carbonate breccias

BÁBEK, Ondřej and Jiří KALVODA. Differential subsidence in the Variscan foreland of Moravia, biostratigraphy, facies and conodont reworking in Mississippian gravity-flow carbonate breccias. In Koelner Forum fuer Geologie und Palaeontologie. 15th ed. Koeln: Institut fuer Geologie und Mineralogie der Universitaet zu Koeln, 2006, p. 6-6. ISBN 3-934027-18-0.

Basic information

• Original name: Differential subsidence in the Variscan foreland of Moravia, biostratigraphy, facies and conodont reworking in Mississippian gravity-flow carbonate breccias
• Name in Czech: Diferenciální subsidence ve variské předpolní pánvi na Moravě, biostratugrafie, facie a resedimentace konodontů ve spodnokarbonských karbonátových brekciích gravitačních toků
• Authors: BÁBEK, Ondřej (203 Czech Republic, guarantor) and Jiří KALVODA (203 Czech Republic).
• Edition: 15. vyd. Koeln, Koelner Forum fuer Geologie und Palaeontologie, p. 6-6, 1 pp. 2006.
• Publisher: Institut fuer Geologie und Mineralogie der Universitaet zu Koeln

Other information

• Original language: English
• Type of outcome: Proceedings paper
• Field of Study: 10500 1.5. Earth and related environmental sciences
• Country of publisher: Germany
• Confidentiality degree: is not subject to a state or trade secret
• RIV identification code: RIV/00216224:14310/06:00017151
• Organization unit: Faculty of Science
• ISBN: 3-934027-18-0
• Keywords in English: breccias; stratigraphy; sedimentology; synsedimentary tectonics; foreland basin
• Tags: breccias, foreland basin, Sedimentology, stratigraphy, synsedimentary tectonics

Abstract

Breccias with phosphorites constitute a distinct lithology in Lower Carboniferous of the Moravo-Silesian basin. This facies constitutes lens-like bodies sandwiched between preorogenic sediments and younger synorogenic turbidites (“Culm” facies). This facies represents a key lithology in our understanding of the transition from the passive margin to the foreland basin stage of the MSB. Detailed description of facies, allochem composition and biostratigraphy indicate that the breccias were deposited on toes of submarine slopes and contain significant proportion of reworked material. The onset of breccia sedimentation was diachronous within the interval from middle Tournaisian to early Viséan. The breccias are always underlain by Famennian carbonates suggesting there is always a distinct hiatus associated with their basal surface. The breccias are in places accompanied by neptunian dikes filled with upper Tournaisian detrital sediments. The features of the breccia sedimentation suggest a local controls acting during their deposition in a fault-related setting. This is also supported by the Famennian to Tournaisian differential subsidence patterns derived from isopach maps. Therefore, the breccias recorded important tectonic events at the transition from the passive margin to the deep-marine foreland basin stage of the MSB.

Abstract (in Czech)

viz. popis výsledků v původním jazyce

Links

• MSM0021622412, plan (intention): Name: Interakce mezi chemickými látkami, prostředím a biologickými systémy a jejich důsledky na globální, regionální a lokální úrovni (INCHEMBIOL) (Acronym: INCHEMBIOL)

Investor: Ministry of Education, Youth and Sports of the CR, Interactions among the chemicals, environment and biological systems and their consequences on the global, regional and local scales (INCHEMBIOL)