Miocene‐Pliocene tectonic evolution of the Slovenian Periadriatic fault: Implications for Alpine‐Carpathian extrusion models

Miocene‐Pliocene tectonic evolution of the Slovenian Periadriatic fault: Implications for... The Periadriatic Line (PAL) is a remarkable, several hundred kilometer long fault system of the Alpine orogen. Its dextral character was documented by several authors using diverse criteria, but detailed kinematics and timing of movements had not been investigated along its whole length. Structural and paleomagnetic measurements, mapping, and stratigraphic and sedimentological studies have helped to unravel the Miocene‐Pliocene evolution of the Slovenian segment of the PAL. Brittle deformation was characterized by NW‐SE to N‐S compression and perpendicular tension. Deformation has resulted in dextral strike‐slip faulting, folding, and tilting of beds. The first transpressional event corresponds to the first phase of lateral extrusion of the East Alpine‐Western Carpathian‐Northern Pannonian block in the early Miocene (24–17.5 Ma). After a short period of transtension during the Karpatian (17.5–16.5 Ma), dextral transpression reoccurred during the middle Miocene to Pliocene and lasted up to the Quaternary. Middle Miocene dextral slip can be connected to the second phase of extrusion. The highly deformed rocks within the dextral shear zones show variable clockwise, sometimes counterclockwise, rotations. The mechanism of rotation seems to be complex, ranging from regional rotation to local folding due to pure or simple shear (domino‐type rotation). http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Tectonics Wiley

Miocene‐Pliocene tectonic evolution of the Slovenian Periadriatic fault: Implications for Alpine‐Carpathian extrusion models

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Publisher
Wiley
Copyright
Copyright © 1998 by the American Geophysical Union.
ISSN
0278-7407
eISSN
1944-9194
DOI
10.1029/98TC01605
Publisher site
See Article on Publisher Site

Abstract

The Periadriatic Line (PAL) is a remarkable, several hundred kilometer long fault system of the Alpine orogen. Its dextral character was documented by several authors using diverse criteria, but detailed kinematics and timing of movements had not been investigated along its whole length. Structural and paleomagnetic measurements, mapping, and stratigraphic and sedimentological studies have helped to unravel the Miocene‐Pliocene evolution of the Slovenian segment of the PAL. Brittle deformation was characterized by NW‐SE to N‐S compression and perpendicular tension. Deformation has resulted in dextral strike‐slip faulting, folding, and tilting of beds. The first transpressional event corresponds to the first phase of lateral extrusion of the East Alpine‐Western Carpathian‐Northern Pannonian block in the early Miocene (24–17.5 Ma). After a short period of transtension during the Karpatian (17.5–16.5 Ma), dextral transpression reoccurred during the middle Miocene to Pliocene and lasted up to the Quaternary. Middle Miocene dextral slip can be connected to the second phase of extrusion. The highly deformed rocks within the dextral shear zones show variable clockwise, sometimes counterclockwise, rotations. The mechanism of rotation seems to be complex, ranging from regional rotation to local folding due to pure or simple shear (domino‐type rotation).

Journal

TectonicsWiley

Published: Oct 1, 1998

References

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    Dunkl, Dunkl; Demény, Demény
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    Haas, Haas; Kovács, Kovács; Krystyn, Krystyn; Lein, Lein
  • Shallow and deep rotation in the Miocene Alps
    Laubscher, Laubscher
  • Transpressional collision structures in the upper crust: the fold‐thrust belt of the Northern Calcareous Alps
    Linzer, Linzer; Ratschbacher, Ratschbacher; Frisch, Frisch
  • Identification of ferromagnetic minerals in a rock by coercivity and unblocking temperature properties
    Lowrie, Lowrie
  • The Klagenfurt Basin in the Eastern Alps: an intra‐orogenic decoupled flexural basin?
    Nemes, Nemes
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    Nicholson, Nicholson; Seeber, Seeber; Williams, Williams; Sykes, Sykes
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    Ratschbacher, Ratschbacher; Frisch, Frisch; Linzer, Linzer; Merle, Merle
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