Podrobnosti záznamu

    Crust Activation in Central Europe and their metallogenic importance for the Erzgebirge
Údaj o odpovědnosti
    Ludwig Baumann, Wolfgang Weber
Další názvy
    Metallogenetische Untersuchungsergebnisse aus dem Erzgebirge (Krušné hory) (Variant.)
    Baumann, Ludwig
    Weber, Wolfgang
Zdrojový dokument - seriál
    Freiberger Forschungshefte. Reihe C, Geowissenschaften
    Vol. 467
    p. 27-58
    10 obr., 7 s.bibl.
    Zkr. název ser.: Freiberg. Forsch.-H., R. C
Předmětová skupina
    geologie hlubinná
    kůra zemská
    provincie metalogenetická
    tektonika zlomová
    vrásnění variské
Předmětová kategorie
    Český masiv
    zlom hlubinný
Geografické jméno
    Česká republika
    Evropa střední
    Evropa západní
Klíčové slovo
Abstrakt (anglicky)
   (1) The paper focuses the most important tectonic preconditions for crust activation in Central Europe. In the Phanerozoic, four activation phases with metallogenic significance can be differentiated: A 1 Lower Paleozoic (Cambrian-Ordovician) 580 to 440 Ma (-140 Ma),(-"pre-Hercynian"); A 2 Middle Paleozoic (Silurian/Devonian-Carboniferous) 440 to 290 Ma (-150 Ma), (-"Hercynian"); A 3 Upper Paleozoic-Early Mesozoic (Permian/Triassic-Jurassic) 290 to 140 Ma (-150 Ma), (-"Late Hercynian"); A 4 Late Mesozoic-Ceinozoic 140 to O Ma (-140 Ma), (-"post-Hercynian"). Thus it becomes evident that the periods of the activation phases in Central Europe cluster (about 140 to 150 Ma). (2) Each activation phase usually begins with uplifting and subsiding troughs (graben formation, rift depressions, "geosynclinal troughs") and ends with subsequent tectonics. (3) Individual activation phases always culminate in mantle activities (mechanical, thermal, material).
   Here, the processes of "liquation" are important. The metallogenic potential of an area decisively depends on the mantle derivates. In general, granites due to crustal activation under subcrustal influence, and their deposit-forming potential reflect the degree of this influence. (4) Numerous age data of rocks and mineralizations confirm a chronological classification of Central European activation phases A 1 to A 4. Major superpositions have essentially regional causes (development of structural and material activities in Central Europe from SE to NW). (5) The Saxothuringian-Lugian trough and ride formations can be correlated to the S Lusatian triple junction (ultrabasite body with mafites) in terms of both structure and substance. In addition, related mineralizations show pronouced metallogenetic zoning
    Česká geologická služba
Kód přispěvatele
    ČGS (UNM)
Zdrojový formát
Datum vložení
    3. 4. 2008
Datum importu
    8. 8. 2012