Record details

Title
    A new vent-related foraminifer from the lower Toarcian black claystone of the Tatra Mountains, Poland
Author
    Bubík, Miroslav
    Jach, Renata
    Tyszka, Jarosław
Language
    anglicky
Publication type
    článek v periodiku
Source title - serial
    Acta Palaeontologica Polonica
Vol./nr.
    Roč. 55, č. 2
Pages
    9
Year
    2010
Thesaurus term
    Foraminifera, Ammosphaeroidinidae, agglutinated foraminifera, hydrothermal vent, black claystone, suboxia, The Carpathians, Tethys, Jurassic
Keyword
    Black
    Claystone
    Foraminifer
    Lower
    Mountains
    New
    Poland
    Tatra
    Toarcian
    Vent-related
Abstract (in english)
   Recurvoides infernus sp. nov., one of the oldest representatives of the superfamily Recurvoidacea (Foraminiferida), is described in a thin black claystone overlaying the manganese deposits of the Krížna Unit in the Tatra Mountains (Poland). These manganese carbonates/silicates were laid down around a shallow exhalative submarine vent, active in the Early Toarcian. The microfossils are possibly the first described Jurassic foraminifera associated with hydrothermal vents. The assemblage is dominated by a high abundance and dominance of this new species. The primary lamination of the claystone, the lack of any macrofauna, and an elevated TOC content point to oxygen-deficient conditions during sedimentation of these deposits. The nearly exclusive occurrence of agglutinated foraminifers suggests a low pH level. It is likely that foraminifers colonized vent-related bacterial mats that acted as a rich and stable food source. Modern shallow- and deep-water hydrothermal vents may represent simi
   lar habitats.
Contributor
    Česká geologická služba
Contributor code
    ČGS (RIV)
Source format
    R
Import date
    15. 10. 2014