Record details

Title
    Crust Activation in Central Europe and their metallogenic importance for the Erzgebirge
Statement of responsibility
    Ludwig Baumann, Wolfgang Weber
Other titles
    Metallogenetische Untersuchungsergebnisse aus dem Erzgebirge (Krušné hory) (Variant.)
Author
    Baumann, Ludwig
    Weber, Wolfgang
Language
    anglicky
Source title - serial
    Freiberger Forschungshefte. Reihe C, Geowissenschaften
Vol./nr.
    Vol. 467
Pages
    p. 27-58
Year
    1996
Notes
    10 obr., 7 s.bibl.
    Zkr. název ser.: Freiberg. Forsch.-H., R. C
Subject group
    geologie hlubinná
    kůra zemská
    mesozoikum
    metalogeneze
    paleozoikum
    plášť
    provincie metalogenetická
    tektonika zlomová
    vrásnění variské
Subject category
    Český masiv
    paleotektonika
    saxothuringikum
    zlom hlubinný
Geographical name
    Česká republika
    Evropa střední
    Evropa západní
Keyword
    Activation
    Central
    Crust
    Erzgebirge
    Europe
    Importance
    Metallogenic
Abstract (in english)
   (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
Contributor
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
    U
Entered date
    3. 4. 2008
Import date
    8. 8. 2012