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

0429926 - GLÚ 2015 RIV SE eng J - Článek v odborném periodiku
Tasáryová, Z. - Schnabl, Petr - Čížková, Kristýna - Pruner, Petr - Janoušek, V. - Rapprich, V. - Štorch, Petr - Manda, Š. - Frýda, J. - Trubač, J.
Gorstian palaeoposition and geotectonic setting of Suchomasty Volcanic Centre (Silurian, Prague Basin, Teplá-Barrandian Unit, Bohemian Massif).
GFF. Roč. 136, č. 1 (2014), s. 262-265. ISSN 1103-5897. E-ISSN 2000-0863
Grant CEP: GA ČR GAP210/10/2351
Institucionální podpora: RVO:67985831
Klíčová slova: basalt geochemistry * Gorstian * palaeolatitude * Prague Basin * Silurian * Suchomasty Volcanic Centre
Kód oboru RIV: DE - Zemský magnetismus, geodézie, geografie
Impakt faktor: 1.309, rok: 2014

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 Scanicus chimaera 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.
Trvalý link: http://hdl.handle.net/11104/0234891