Podrobnosti záznamu

Název
    Early Carboniferous blueschist facies metamorphism in metapelites of the West Sudetes (Northern Saxothuringian Domain, Bohemian Massif)
Autor
    Finger, Fritz
    Jeřábek, Petr
    Konopásek, Jiří
    Košler, Jan
    Žáčková, Eliška
Jazyk
    anglicky
Typ dokumentu
    článek v periodiku
Zdrojový dokument - seriál
    Journal of Metamorphic Geology
Svazek/č.
    Roč. 28, č. 4
Strany
    19
Rok
    2010
Výraz tezauru
    blueschist facies metamorphism
    Bohemian Massif
    Central European Variscides
    monazite dating
    thermodynamic modelling
Klíčové slovo
    Blueschist
    Bohemian
    Carboniferous
    Domain
    Early
    Facies
    Massif
    Metamorphism
    Metapelites
    Northern
    Saxothuringian
    Sudetes
    West
Abstrakt (anglicky)
   The metamorphic evolution of micaschists in the NE part of the Saxothuringian Domain (SD) is characterized by the early HP assemblage with cld in cores of garnet and Grt-Chl-Phe-Qtz-Pg ass. in the matrix. Minerals of M1-M2 stage were overprinted by LP assemblage Ab-Chl-Ms-Qtz-Ep.Thermodynamic modelling suggests that mineral ass. record peak-P conditions of }=18-19kbar at 460-520°C followed by decompression 10.5-13.5kbar and final decom. to {8.5kbar and {480°C.The peak PT indicate a HP/LT thermal gradient of 7-7.5 C°/km.Laser ablation ICP-MS isotopic dating and el. microprobe dating of monazite from the M1-M2 mineral assemblages give ages of 330+/-10 and 328+/-6Ma,which are interpreted as the timing of a peak pressure to early decompression stage.The met. record and timing of metamorphism show striking similarities with the evolution of the central and SW parts of the SD and suggest a common tectonic evolution along the eastern flank of the SD during the Devonian-Carboniferous periods.
Přispěvatel
    UK Praha, Přírodovědecká fakulta
Kód přispěvatele
    UK, PřF
Zdrojový formát
    R
Datum importu
    8. 8. 2012