Record details

Title
    Deep lithospheric structure and hypogene metallogeny at convergent plate margins
Statement of responsibility
    Václav Hanuš, Jiří Vaněk, Aleš Špičák
Other titles
    Deep Structure of the Earth and Concentration of Metals in the Lithosphere: A Geodynamic Approach (Variant.)
Author
    Hanuš, Václav
    Špičák, Aleš
    Vaněk, Jiří
Language
    anglicky
Source title - serial
    Global tectonics and metallogeny
Vol./nr.
    Vol. 8, no. 1-4
Pages
    p. 141-149
Year
    2003
Notes
    7 obr., 2 s. bibl.
    il.
    Zkr. název ser.: Glob. Tecton. Metallog.
Subject group
    hranice desek
    litosféra
    metalogeneze
    seizmicita
    subdukce
    zlom aktivní
    zóna poruchová
Geographical name
    Amerika jižní
    Indonésie
    Mexiko
Keyword
    Convergent
    Deep
    Hypogene
    Lithospheric
    Margins
    Metallogeny
    Plate
    Structure
Abstract (in english)
   The correlation between hypogene mineral deposits and seismically active fracture zones, cutting the continental lithosphere of convergent plate margins in South America, Indonesia and Mexico, was investigated. It was found that all large mineral deposits and most important mining districts in Andean South America between 18-34° S, Sumatra and Java, and central and southern Mexico are situated in the outcrops of deep rooted seismically active fracture zones induced and/or activated by the process of subduction of the Nazca, Indo-Australian and Cocos plates. We suppose that active fracture zones, penetrating the whole thickness of the continental lithosphere, effectuate a channeling of ore-bearing solutions liberated from the subducting oceanic lithosphere. The repeated seismic activity stimulates the long-term permanent re-opening of import paths for ore-bearing solutions that causes the accumulation of enormous amounts of metals in restricted domains of the earth crust.
   It appears that the fracturing of the continental lithosphere remains preserved in time and space, being re-activated under favourable conditions by a sequence of subduction cycles of different age
Contributor
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
    U
Entered date
    1. 10. 2007
Import date
    8. 8. 2012