Displaced South Alpine and Dinaridic elements in the mid-Hungarian zone

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Abstract

The Mid-Hungarian Zone is a WSW-ENE trending composite structural unit in the basement of the Pannonian Basin that is made up of displaced crustal fragments (terranes) of South Alpine and Dinaridic origin. In the early stage of the Alpine evolution these fragments were located in various sectors of the NW Neotethys region, representing different paleogeographic settings from passive margin through continental slope to oceanic basement. Middle to Late Jurassic closure of the Neotethys led to the development of a suture zone made up of subduction-related complexes that can be followed all along the strike of the Dinarides. During the Cretaceous compressional stages, nappe stacks were formed from the accretionary complex and the fragments of the previously disrupted passive margin. Eastward extrusion (escape) of the ALCAPA Mega-unit during the Oligocene to Early Miocene led to large-scale displacement of fragments of this nappe stack, transporting them to their present-day position, and resulted in dispersal of the northwestern segment of the suture zone. The paper summarizes the basic characteristics of the dislocated blocks, evaluates their relationships and determines their original setting.

Original languageEnglish
Pages (from-to)135-164
Number of pages30
JournalCentral European Geology
Volume53
Issue number2-3
DOIs
Publication statusPublished - Sep 1 2011

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Keywords

  • Mid-Hungarian Line
  • Mid-Hungarian Zone
  • Neotethys
  • Pannonian Basin
  • Periadriatic-Balaton Line
  • displaced terranes
  • ophiolite mélange

ASJC Scopus subject areas

  • Geology

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