Record details

Title
    Palaeoclimate perturbations before the Sheinwoodian glaciation: A trigger for extinctions during the 'Ireviken Event'
Author
    Calner, M.
    Frýda, Jiří
    Joachimski, M.
    Lehnert, O.
    Mannik, P.
Language
    anglicky
Publication type
    článek v periodiku
Source title - serial
    Palaeogeography, Palaeoclimatology, Palaeoecology
Vol./nr.
    Roč. 296, č. 2010
Pages
    12
Year
    2010
Thesaurus term
    Ordovician, Palaeoclimate, extinction, Ireviken Event
Keyword
    Before
    During
    Extinctions
    Glaciation
    Ireviken
    Palaeoclimate
    Perturbations
    Sheinwoodian
    Trigger
Abstract (in english)
   Our data suggest that faunal extinctions are connected to time intervals of warming before the establishment of more stable and cooler conditions during the main Sheinwoodian glacial. The most severe extinctions and faunal turnovers at datum points 2 and 4 occurred during the early, warmer interval of the event. After the shift into the Sheinwoodian icehouse in the Lower Kockelella ranuliformis Zone, reflected by rapidly decreasing sea-water temperatures, faunas restabilized and reefal communities started to flourish. Sedimentary evidence for the glaciation is discussed for different palaeolatitudes.
Contributor
    Česká geologická služba
Contributor code
    ČGS (RIV)
Source format
    R
Import date
    15. 10. 2014