Record details

Title
    Structure and dynamics of the lithosphere in the Western Carpathians and the Bohemian Massif junction: multidisciplinary geophysical and geological study
Statement of responsibility
    Miroslav Bielik, Jozef Vozár, Jaroslav Šantavý, Ján Šefara, Jozef Hók
Other titles
    Stavba a dynamika litosféry na styku Západných Karpát a Českého masívu, multidisciplinárna a geologická studie
Author
    Bielik, Miroslav
    Hók, Jozef
    Šantavý, Jaroslav
    Šefara, Ján
    Vozár, Jozef, 1939-
Language
    anglicky
Source title - serial
    Krystalinikum
Vol./nr.
    Vol. 28
Pages
    p. 129-143
Year
    2002
Notes
    4 obr.
    il.
    Obsahuje bibliografické odkazy
    Slovenské resumé
    Zkr. název ser.: Krystalinikum
Classfication no.
    55(1)
    550.3
    551.2
Conspectus category
    55
Subject group
    anomálie tíhová
    Český masiv
    diskontinuita Mohorovičičova
    geologie dynamická
    geologie hlubinná
    geologie regionální
    interpretace
    litosféra
    neotektonika
    tektonika fundamentu
    Západní Karpaty
Geographical name
    ČR-Morava
    Slovensko
Keyword
    Bohemian
    Carpathians
    Dynamics
    Geological
    Geophysical
    Junction
    Lithosphere
    Massif
    Multidisciplinary
    Structure
    Study
    Western
Abstract (in english)
   The presented paper is about regional research of a deep geological structure and dynamics of the lithosphcre of the contact zone of the Western Carpathians and the Bohemian Massif. The research is based on multidisciplinary geophysical and geological study. The complete interpretation was made along two transects, 3T and 6HR. The deep structure of the contact zone is characterized by small 2-3 km deepening of the Moho discontinuity. Despite the interpreted partial crust-thickening we do not register significant crustal root in the investigated area. It is probable, that the deep structure of the contact zone of the Bohemian Massif and the Western Carpathians was influenced mainly by transpressional deformations that run along sinistral deep-seated fault (Záhorie fault, Mur-Mürz-Leitha fault). The fault has flower structure and it is dominant seismic and scismologic feature of this contact zone.
   On the base of macroseismically observed earthquakes epicenter distributions it is the most notable and significant tectonic lineament in the Western Carpathians. The deep contact of both colliding plates is very steep, almost vertical. Because the border lithosphere-lithosphere in the contact zone is evidently rising from the depth from 130 km to depth 70 km, we assume that the subducted lithospheric plate is detachment and submerged to deeper asthenosphere. The most essential source of the Carpathian gravity minimum of the western segment of the Western Carpathians is low-density Tertiary sediments of the Vienna basin with depth up to 6.5 km and the sediments of the outer Western Carpathian flysch, which bottom termination in the direction toward the Klippen belt drops to depth up to 15-18 km. Also another deep structures have certain but lower portion on this negative gravity anomaly. They are gravity influence of the upper crust of the Bohemian Massif and 2-3 km crust thickening.
   In the wider vicinity of the contact zone between the Bohemian Massif and the Western Carpathians, there were also determined neotectonic regions: the Flysch belt region, the Klippen belt region and the Western Slovakia region
Contributor
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
    U
Entered date
    4. 12. 2006
Import date
    8. 8. 2012