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Gorstian palaeoposition and geotectonic setting of Suchomasty Volcanic Centre (Silurian, Prague Basin, Teplá-Barrandian Unit, Bohemian Massif)

By Zuzana Tasáryová (536588), Petr Schnabl (536589), Kristýna Čížková (536590), Petr Pruner (536591), Vojtěch Janoušek (536592), Vladislav Rapprich (536593), Petr Štorch (536594), Štěpán Manda (536595), Jirˇí Frýda (561806) and Jakub Trubač (536597)

Abstract

<div><p>A multidisciplinary palaeomagnetic, whole-rock geochemical and volcanological study was carried out in Gorstian deposits of the Suchomasty Volcanic Centre in the western segment of the Prague Basin (Teplá-Barrandian Unit, Bohemian Massif). Phreato-Strombolian eruptions of alkali basalts, transitional between enriched mid-ocean rift basalt and ocean-island basalt, associated with effusions of lava flows within the lower–middle <i>Scanicus chimaera</i> graptolite Biozone at the Vinařice locality, yield a mean palaeomagnetic direction that allows for computation of a palaeolatitude of 24.4°S. Present data support that the Prague Basin was a continental rift basin, situated on presumed Perunica microplate. The Perunica microplate drifted at southern subtropical palaeolatitudes of 24.4° in Gorstian time and experienced either 170° counter-clockwise or 190° clockwise rotation during the Variscan Orogeny.</p></div

Topics: Physiology, Earth and Environmental Sciences, Ecology, Biological Sciences, Marine Biology, Inorganic Chemistry, palaeomagnetic, basalt, gorstian, rift, Prague Basin, Present data support, Suchomasty Volcanic Centre, Bohemian Massif, palaeolatitude, Tepl, Perunica microplate
Year: 2015
DOI identifier: 10.6084/m9.figshare.963206.v4
OAI identifier: oai:figshare.com:article/963206
Provided by: FigShare
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