Podrobnosti záznamu

Název
    Metabasic rocks of the Rudawy Janowickie and Lasocki Range - their significance in the study of metamorphic evolution of the East Karkonosze Complex (West Sudetes, NE Bohemian Massif)
Údaj o odpovědnosti
    Witold Smulikowski
Další názvy
    Metabazyty Rudaw Janowickich i Grzbietu Lasockiego i ich znaczenia dla poznania metamorficznej ewolucji kompleksu wschodnich Karkonoszy (Sudety Zachodnie, NE czesc masywu czeskiego)
Autor
    Smulikowski, Witold
Jazyk
    anglicky
Zdrojový dokument - seriál
    Archiwum Mineralogiczne
Svazek/č.
    Vol. 52, no. 2
Strany
    p. 211-273
Rok
    1999
Poznámky
    6 obr., 8 fot., 6 tab., 4 s.bibl.
    il.
    Polské resumé
    Zkr. název ser.: Arch. mineral. (Warszawa)
Předmětová skupina
    amfibolit
    chemismus minerálů
    krkonošsko-jizerské krystalinikum
    metabazit
    minerály horninotvorné
    paleozoikum-spodní
    polymetamorfóza
    protolit
    vrásnění variské
Geografické jméno
    ČR-Čechy
    Polsko - jihozápad
    Svoboda nad Úpou (Trutnov)
    Žacléř (Trutnov)
Klíčové slovo
    Bohemian
    Complex
    East
    Evolution
    Janowickie
    Karkonosze
    Lasocki
    Massif
    Metabasic
    Metamorphic
    NE
    Range
    Rocks
    Rudawy
    Significance
    Study
    Sudetes
    West
Abstrakt (anglicky)
   In the Rýchory-Lasocki Range-Rudawy Janowickie metamorphic complex in the West Sudetes, called East karkonosze Complex, the highly diversified metabasic rocks occur. In the Polish part of the complex they belong to two formations separated by the dislocation zone; the Leszczyniec Volcanic Formation (LVF) and the Czarnów Schist Formation (CSF). Minerals of metabasites, i.e. plagioclase, amphibole, epidote, chlorite, stilpnomelane, phengite and others show wide variation in composition, which is presented in graphs and tables of electron-probe analyses. Plagioclase of CSF metabasites varies from albite to andesine, exceptionally even anorthite was observed, but in LVF it is only albite. Ca-amphiboles in CSF vary from actinolite to Fe-pargasite and hastingsitic Fe-hornblende, all with relatively low Ti content. In LVF they fall within the range from actinolite to pargasitic Fe-hornblende. In particular two varieties of Mg-hornblende were distinguished with higher and lower Ti contents.
   In numerous zoned amphibole grains, olive higher-Ti hornblende or almost colourless actinolite constitute the central parts while blue-green lower-Ti hornblende forms the margins. On the basis of mineral, mainly amphibole compositions and microstructural relationships, referring to the former paper on glaucophane-schist facies rocks (Smulikowski 1995a), the following 3 events of regional metamorphism have been distinguished: I - amphibolite facies related to the Early Ordovician see-floor spreading, II - high P/T metamorphism (glaucophane-schist f., greenschist f., epidote-amphibolite f.) of the collisional subduction/obduction regime, followed by III - medium to low P/T greenschist facies metamorphism, both of the Early variscan. The last metamorphic event in the complex was IV - contact metamorphism (up to amphibolite facies) related to the Late Variscan Karkonosze granite intrusion
Přispěvatel
    Česká geologická služba
Kód přispěvatele
    ČGS (UNM)
Zdrojový formát
    U
Datum vložení
    21. 3. 2008
Datum importu
    8. 8. 2012