From nappe stacking to extensional detachments at the contact between the Carpathians and Dinarides – The Jastrebac Mountains of Central Serbia

Dalibor Erak, Liviu Matenco, Marinko Toljić, Uroš Stojadinović, Paul A.M. Andriessen, Ernst Willingshofer, Mihai N. Ducea

Research output: Contribution to JournalArticleAcademicpeer-review

Abstract

Reactivation of inherited nappe contacts is a common process in orogenic areas affected by back-arc extension. The amount of back-arc extension is often variable along the orogenic strike, owing to the evolution of arcuated mountain chains during stages of rapid slab retreat. This evolution creates low rates of extension near rotation poles, where kinematics and interplay with the pre-existing orogenic structure are less understood. The amount of Miocene extension recorded by the Pannonian Basin of Central Europe decreases SE-wards along the inherited Cretaceous – Paleogene contact between the Dinarides and Carpathian Mountains. Our study combines kinematic data obtained from field and micro-structural observations assisted with fission track thermochronological analysis and U-Pb zircon dating to demonstrate a complex poly-phase evolution in the key area of the Jastrebac Mountains of Serbia. A first event of Late Cretaceous exhumation was followed by latest Cretaceous – Eocene thrusting and magmatism related to a continental collision that sutured the accretionary wedge containing contractional trench turbidites. The suture zone was subsequently reactivated and exhumed by a newly observed Miocene extensional detachment that lasted longer in the Jastrebac Mountains when compared with similar structures situated elsewhere in the same structural position. Such extensional zones situated near the pole of extensional-driven rotation favour late stage truncations and migration of extension in a hanging-wall direction, while directions of tectonic transport show significant differences in short distances across the strike of major structures.

Original languageEnglish
Pages (from-to)162-183
Number of pages22
JournalTectonophysics
Volume710-711
DOIs
Publication statusPublished - 25 Jul 2017

Fingerprint

folds (geology)
detachment
stacking
mountains
nappe
mountain
Cretaceous
Carpathian Mountains (Europe)
poles
kinematics
arcs
Miocene
Central Europe
continental collision
suture zone
accretionary prism
hanging wall
dating
reactivation
exhumation

Keywords

  • Carpathians
  • Dinarides
  • Extensional detachments
  • Kinematics
  • Thermochronology

Cite this

Erak, Dalibor ; Matenco, Liviu ; Toljić, Marinko ; Stojadinović, Uroš ; Andriessen, Paul A.M. ; Willingshofer, Ernst ; Ducea, Mihai N. / From nappe stacking to extensional detachments at the contact between the Carpathians and Dinarides – The Jastrebac Mountains of Central Serbia. In: Tectonophysics. 2017 ; Vol. 710-711. pp. 162-183.
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From nappe stacking to extensional detachments at the contact between the Carpathians and Dinarides – The Jastrebac Mountains of Central Serbia. / Erak, Dalibor; Matenco, Liviu; Toljić, Marinko; Stojadinović, Uroš; Andriessen, Paul A.M.; Willingshofer, Ernst; Ducea, Mihai N.

In: Tectonophysics, Vol. 710-711, 25.07.2017, p. 162-183.

Research output: Contribution to JournalArticleAcademicpeer-review

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