Deformation partitioning during polyphase oblique convergence in the Karawanken Mountains, southeastern Alps

Polinski, Ralf; Eisbacher, G. H.

doi:10.1016/0191-8141(92)90070-d

Cited by 54 publications

(44 citation statements)

References 28 publications

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“…Strike-slip was sinistral with north-side-up displacement in the southern part of the SC along the PJF, and dextral in the RC along the Mölltal Fault (MF) at its southern margin and along the Hochstuhl Fault (HF) at its northern margin (e.g. Polinski and Eisbacher 1992;Mancktelow et al 2001) (Fig. 1).…”

Section: Discussionmentioning

confidence: 99%

Eoalpine tectonics of the Eastern Alps: implications from the evolution of monometamorphic Austroalpine units (Schneeberg and Radenthein Complex)

et al. 2011

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Monometamorphic metasediments of Paleozoic or Mesozoic age constituting Schneeberg and Radenthein Complex experienced coherent deformation and metamorphism during Late Cretaceous times. Both complexes are part of the Eoalpine high-pressure wedge that formed an intracontinental suture and occur between the polymetamorphosed Ö tztal-Bundschuh nappe system on top and the Texel-Millstatt Complex below. During Eoalpine orogeny Schneeberg and Radenthein Complexes were south-dipping and they experienced a common tectonometamorphic history from ca. 115 Ma onwards until unroofing of the Tauern Window in Miocene times. This evolution is subdivided into four distinct tectonometamorphic phases. Deformation stage D1 is characterized by WNW-directed shearing at high temperature conditions (550-600°C) and related to the initial exhumation of the high-pressure wedge. D2 and D3 are largely coaxial and evolved during high-to mediumtemperature conditions (ca. 450 to C550°C). These stages are related to advanced exhumation and associated with large-scale folding of the high-pressure wedge including the Ö tztal-Bundschuh nappe system above and the TexelMillstatt Complex below. For the area west of the Tauern Window, F2/F3 fold interference results in the formation of large-scale sheath-folds in the frontal part of the nappe stack (formerly called ''Schlingentektonik'' by previous authors). Earlier thrusts were reactivated during Late Cretaceous normal faulting at the base of the Ö tztal-Bundschuh nappe system and its cover. Deformation stage D4 is of OligoMiocene age and accounted for tilting of individual basement blocks along large-scale strike-slip shear zones. This tilting phase resulted from indentation of the Southern Alps accompanied by the formation of the Tauern Window.

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Section: Discussionmentioning

confidence: 99%

Eoalpine tectonics of the Eastern Alps: implications from the evolution of monometamorphic Austroalpine units (Schneeberg and Radenthein Complex)

et al. 2011

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“…In these cases the limit of pre-Tertiary basement and Tertiary was hard to pick. Polinski and Eisbacher (1992); imunic Â (1992); Fodor et al (1998);Placer (1998aPlacer ( , 1998b; Prelogovic Â et al (1998). Note a gradual change from NE±SW to E±W strike of folds and thrusts going from the Karlovac to the Zagorje basin, respectively, as well as right-lateral offset along NW-striking faults (see text for more explanation).…”

Section: Methodsmentioning

confidence: 96%

Neogene–Quaternary structures in the border zone between Alps, Dinarides and Pannonian Basin (Hrvatsko zagorje and Karlovac Basins, Croatia)

2001

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Analysis of Neogene±Quaternary structures from seismic lines, surface measurements and geological-mapping is presented from the border zone between the Alps, Dinarides and Pannonian Basin. First, Early Miocene extension was possibly characterised by ENE directed extension. It was partly synchronous with NW±SE shortening. Second, Middle Miocene extension was possibly characterised by NW±SE to WNW±ESE directed extension. Again, this event was followed by a new generation of thrusts related to end-Sarmatian shortening. The last, Late Miocene E±W to WNW±ESE directed extension was followed by a final shortening that created major, map-scale folds, basement pop-ups and inverted former basins. Geometry, onlap and thickness patterns of the youngest syn-tectonic basin fill indicate that this last, N±S to NW±SE directed shortening started in Late Pontian and continued up to the present time. When taking into account the wider surrounding area, it seems that the structures related to this latest shortening are arranged in often perpendicular directions, centred at the eastern end of the Periadriatic lineament. To explain this fan-like pattern of synchronous shortenings a kinematic model is proposed combining counter-clockwise rotation with north-or northwestward shift of the Dinaridic block with respect to the more stable Alpine buttress.

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“…1. This fault is kinematically linked with Late Miocene to recent dextral transpression in the Karawanken (Polinski and Eisbacher 1992); it dies out northwestward and is unrelated to exhumation of the Tauern Window.…”

Section: Major Late Alpine Fault Zonesmentioning

confidence: 99%

The Tauern Window (Eastern Alps, Austria): a new tectonic map, with cross-sections and a tectonometamorphic synthesis

et al. 2013

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We present a tectonic map of the Tauern Window and surrounding units (Eastern Alps, Austria), combined with a series of crustal-scale cross-sections parallel and perpendicular to the Alpine orogen. This compilation, largely based on literature data and completed by own investigations, reveals that the present-day structure of the Tauern Window is primarily characterized by a crustal-scale duplex, the Venediger Duplex (Venediger Nappe system), formed during the Oligocene, and overprinted by doming and lateral extrusion during the Miocene. This severe Miocene overprint was most probably triggered by the indentation of the Southalpine Units east of the Giudicarie Belt, initiating at 23-21 Ma and linked to a lithosphere-scale reorganization of the geometry of mantle slabs. A kinematic reconstruction shows that accretion of European lithosphere and oceanic domains to the Adriatic (Austroalpine) upper plate, accompanied by highpressure overprint of some of the units of the Tauern Window, has a long history, starting in Turonian time (around 90 Ma) and culminating in Lutetian to Bartonian time (45-37 Ma).

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Deformation partitioning during polyphase oblique convergence in the Karawanken Mountains, southeastern Alps

Cited by 54 publications

References 28 publications

Eoalpine tectonics of the Eastern Alps: implications from the evolution of monometamorphic Austroalpine units (Schneeberg and Radenthein Complex)

Eoalpine tectonics of the Eastern Alps: implications from the evolution of monometamorphic Austroalpine units (Schneeberg and Radenthein Complex)

Neogene–Quaternary structures in the border zone between Alps, Dinarides and Pannonian Basin (Hrvatsko zagorje and Karlovac Basins, Croatia)

The Tauern Window (Eastern Alps, Austria): a new tectonic map, with cross-sections and a tectonometamorphic synthesis

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