Record details

Title
    Lacustrine couplet-lamination: evidence for Late Pennsylvanian seasonality in central equatorial Pangaea (Stephanian B, Mšec Member, Central and Western Bohemian basins)
Author
    Laurin, Jiří
    Lojka, R.
    Matys Grygar, Tomáš
    Matysová, Petra
    Sýkorová, Ivana
Language
    anglicky
Publication type
    článek v odborném periodiku
Source title - serial
    Bulletin of Geosciences
Vol./nr.
    Roč. 85, č. 4
Pages
    s. 709-734
Year
    2010
Notes
    Projekt: IAA300460804, GA AV ČR3cav_un_auth*0241231
    Projekt: KJB307020601, GA AV ČR3cav_un_auth*0217178
    Rozsah: 26 s.
    Výzkumný záměr: CEZ:AV0Z30120515
    Výzkumný záměr: CEZ:AV0Z30460519
    Výzkumný záměr: CEZ:AV0Z40320502
Subject category
    cyclicity
    dispersed organic matter
    freshwater lake
    lamination
    palaeoclimate
    siderite
Keyword
    Basins
    Bohemian
    Central
    Couplet-lamination
    Equatorial
    Evidence
    Lacustrine
    Late
    Member
    Mšec
    Pangaea
    Pennsylvanian
    Seasonality
    Stephanian
    Western
Abstract (in english)
   A large freshwater lake formed during the Stephanian B period of the late Pennsylvanian in the central east equatorial Pangaea and covered a substantial part of the continental Late Palaeozoic basins in the central Bohemian Massif. Lacustrine mudstones of the Mšec Member were acquired from two shallow boreholes 80 km apart and were analysed for lamination structure and periodicity, mineral composition and dispersed organic matter, in order to obtain more detailed information on the palaeoenvironmental change with a near annual resolution. Two hydrological states of the lake were identified, including high lake-level periods with dysoxic conditions on the lake floor, under a permanently thermally stratified hypolimnion favouring organic matter production and storage during periods of condensed sedimentation producing an irregular lamination pattern.
Contributor
    AV ČR Brno, Geofyzikální ústav
Contributor code
    AV ČR, GFÚ
Source format
    U
Import date
    9. 12. 2013