Record details

Title
    Sedimentary record of subaerial volcanic activity in the basal Ordovician shoal-marine deposits: the Trenice Formation of the Prague Basin, Bohemian Massif, Czech Republic
Author
    Hroch, Tomáš
    Kraft, Petr
    Rajchl, Michal
    Rapprich, Vladislav
Language
    anglicky
Publication type
    článek v periodiku
Source title - serial
    Bulletin of Geosciences
Vol./nr.
    Roč. 87, č. 2
Pages
    14
Year
    2012
Thesaurus term
    Ordovician
    Prague Basin
    shoal-water sediments
    volcaniclastics
Keyword
    Activity
    Basal
    Basin
    Bohemian
    Czech
    Deposits
    Formation
    Massif
    Ordovician
    Prague
    Record
    Republic
    Sedimentary
    Shoal-marine
    Subaerial
    Trenice
    Volcanic
Abstract (in english)
   The basal Ordovician Třenice Formation represents an initial member of preserved (in)fill of the Prague Basin. Volcanic admixture in sediments preserved within the south-western part of the basin suggests an activity of subaerial volcanism during the deposition of the Třenice Formation sediments. Three principal lithofacies associations were defined within a sedimentary record of the Třenice Formation based on petrography and observed sedimentary structures: i) graded conglomerates, ii) lithic sandstones and iii) volcanigenic deposits. Studied sediments deposited in form of sand dunes commonly interbedded with volcaniclastics are supposed to be deposited at the marine shoreface with influence of ebb-tide currents. The volcaniclastic intercalations are interpreted as a record of debris flows, hyperconcentrated currents and turbidity currents that resedimented volcaniclastic material derived originaly from subaerial Křivoklát-Rokycany and Strašice volcanic complexes.
Contributor
    UK Praha, Přírodovědecká fakulta
Contributor code
    UK, PřF
Source format
    R
Import date
    27. 4. 2014