%0 Journal Article
%T Sedimentary record of subaerial volcanic activity in the basal Ordovician shoal-marine deposits: the T enice Formation of the Prague Basin, Bohemian Massif, Czech Republic
%A Hroch T
%A Rajchl M
%A Kraft P
%A Rapprich V
%J Bulletin of Geosciences
%D 2012
%I Czech Geological Survey
%R 10.3140/bull.geosci.1303
%X The basal Ordovician T enice Formation represents an initial member of the preserved infill of the Prague Basin. Volcanic admixture in sediments preserved in the south-western part of the basin suggests subaerial volcanic activity during the deposition of the T enice Formation. Three principal lithofacies associations were defined within sedimentary record of the T enice Formation based on petrography and observed sedimentary structures: i) graded conglomerates, ii) lithic sandstones and iii) volcanigenic deposits. The studied sediments were mostly deposited as subtidal sand dunes, locally interbedded with volcaniclastic rocks. They are considered deposits of a marine lower shoreface influenced by ebb-tide currents. Volcaniclastic intercalations are interpreted as deposits of debris flows and turbidity currents that redeposited volcaniclastic material derived from subaerial K ivokl¨¢t-Rokycany and Stra ice volcanic complexes.
%K Prague Basin
%K shoal-marine sediments
%K volcaniclastics
%K Ordovician
%U http://www.geology.cz/bulletin/fulltext/1303_Hroch.pdf