Geological evolution of the southwestern part of the Veporic Unit (Western Carpathians): Based on fission track and morphotectonic data

Rastislav Vojtko, Silvia Králiková, Paul Andriessen, Roberta Prokešová, Jozef Minár, Petr Jeřábek

Research output: Contribution to JournalArticleAcademicpeer-review

Abstract

Zircon and apatite fission track (FT) and morphotectonic analyses were applied in order to infer quantitative constraints on the Alpine morphotectonic evolution of the western part of the Southern Veporic Unit which is related to: (1) Eo-Alpine Cretaceous nappe stacking and metamorphism of the crystalline basement in the greenschist facies. (2) Exhumation phase due to underthrusting of the northerly located Tatric-Fatric basement (~ 90-80 Ma), followed by a passive en-block exhumation with cooling through ~ 320-200 °C during the Palaeocene (ZFT ages of ~ 61-55 Ma). (3) Slow Eocene cooling through ~ 245-90 °C, which most likely reflected erosion of the overlying cover nappes and the Gosau Group sediments. Cooling reached up to 60 °C till the Oligocene (AFT ages of ~ 37-22 Ma) in association with erosion of cover nappes. The efficient Eocene erosion led to the formation of the first Cenozoic planation surface with supergene kaolinization in many places. (4) The early Miocene erosion coincided with surface lowering and resulted in the second planation surface favourable for kaolinization. (5) In the middle Miocene, the study area was covered by the Poana, Javorie, and Vepor stratovolcanoes. (6) The late Miocene stage was related to the erosion and formation of the third Cenozoic planation surface and the final shaping of the mountains was linked to a new accelerated uplift from the Pliocene.

Original languageEnglish
Pages (from-to)285-302
Number of pages18
JournalGeologica Carpathica
Volume68
Issue number4
DOIs
Publication statusPublished - 1 Aug 2017

Keywords

  • exhumation
  • fission track analysis
  • morphotectonic evolution
  • planation surfaces
  • Veporic Unit
  • Western Carpathians

Fingerprint Dive into the research topics of 'Geological evolution of the southwestern part of the Veporic Unit (Western Carpathians): Based on fission track and morphotectonic data'. Together they form a unique fingerprint.

Cite this