A crustal-scale cross-section through the Tauern Window (eastern Alps) from geophysical and geological data

Lammerer, Bernd; Gebrande, H.; Lüschen, E.; Veselá, Petra

doi:10.1144/sp298.11

Cited by 35 publications

(64 citation statements)

References 26 publications

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“…In spite of these, the cross-section shows a bivergent nappe stack that has formed in Cenozoic times. A major thrust fault at the base of the Tauern massif is indicated by reflection seismics ("Sub-Tauern ramp" of [196] and doubles the thickness of the upper crust. As is evident from palaeogeographic reconstructions [133,197], the thin-skinned nappe piles derived from the European plate (Helvetic and Penninic nappe systems) involved a plate segment much larger than the one on the Adriatic plate (Southalpine nappe system).…”

Section: Western and Eastern Alpsmentioning

confidence: 99%

Thick-Skinned and Thin-Skinned Tectonics: A Global Perspective

Pfiffner¹

2017

Preprint

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This paper gives an overview of the large-scale tectonic styles encountered in orogens worldwide. Thin-skinned and thick-skinned tectonics represents two end member styles recognized in mountain ranges. A thick-skinned tectonic style is typical for margins of continental plates. Thick-skinned style including the entire crust and possibly the lithospheric mantle are associated with intracontinental contraction. Delamination of subducting continental crust and horizontal protrusion of upper plate crust into the opening gap occurs in the terminal stage of continent-continent collision. Continental crust thinned prior to contraction is likely to develop relatively thin thrust sheets of crystalline basement. A true thin-skinned type requires a detachment layer of sufficient thickness. Thickness of the décollement layer as well as the mechanical contrast between décollement layer and detached cover control the style of folding and thrusting within the detached cover units. In subduction related orogens, thin-and thick-skinned deformation may occur several hundreds of kilometers from the plate contact zone. Basin inversion resulting from horizontal contraction may lead to the formation of basement uplifts by the combined reactivation of pre-existing normal faults and initiation of new reverse faults. In composite orogens thick-skinned and thin-skinned structures evolve with a pattern where nappe stacking propagates outward and downward.

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Section: Western and Eastern Alpsmentioning

confidence: 99%

Thick-Skinned and Thin-Skinned Tectonics: A Global Perspective

Pfiffner¹

2017

Preprint

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“…The E-W-trending, subvertical to high-angle Oligocene dykes are unconformably emplaced within both the Austroalpine basement and calcschists of the Glockner nappe, near their backfolded tectonic contact (Figure 2): these relationships point out that the prominent antiformal doming of the Austroalpine-Penninic nappe stack (Castellarin et al, 2006;Lammerer et al, 2008; Lüschen, E., Lammerer, B., Gebrande, H., Millahn, K., Nicolich, R., & TRANSALP Working Group, 2004) and related backfolding were already developed in the Oligocene (Bistacchi et al, 2004), and that they are not a Miocene feature (as e.g. in Fügenschuh, Seward, & Mancktelow, 1997;Schmid et al, 2013).…”

Section: Oligocene Igneous Bodiesmentioning

confidence: 99%

“…The mapped area and surroundings (Figures 1 and 2) include two main structural domains with contrasting tectonic and metamorphic features: the Austroalpine-Penninic collisional wedge and the Southalpine basement (Bigi, Castellarin, Coli, Dal Piaz, Sartori, Scandone, & Vai, 1990;Bistacchi et al, 2004;Castellarin, Nicolich, Fantoni, Cantelli, Sella, & Selli, 2006;Dal Piaz, 2010;Frisch, Dunkl, & Kuhlemann, 2000;Kummerow, Kind, Oncken, Giese, Ryberg, Wylegalla, Scherbaum, & TRANSALP Working Group, 2004;Kurz, Neubauer, Genser, & Dachs, 1998;Lammerer, Gebrande, Lüschen, & Vesela, 2008;Lammerer & Weger, 1998;Lüschen et al, 2004;Schmid, Scharf, Handy, & Rosenberg, 2013). The former is characterized by a generally pervasive Alpine reworking through subductionrelated blueschist and/or Barrovian greenschist to amphibolite facies metamorphism (Oberhänsli, Bousquet, Engi, Goffé, Gosso, Handy, et al, 2004, and refs.…”

Section: Geological Outlinementioning

confidence: 99%

“…The lowermost tectonic units exposed in the core of the western Tauern Window (Figure 1) are the Penninic Tux and Venediger-Zillertal basement and cover nappes (Zentralgneis and Untereschieferhülle in fixistic Austrian literature), both derived from the European passive continental margin (Bistacchi et al, 2004;Dal Piaz, 1934;Frisch, 1975Frisch, , 1980Lammerer et al, 2008;Rockenschaub et al, 2011). These tectono-metamorphic units display a double domal structure (Figure 3, north-south cross-section) with fold hinges gently dipping to the west, where they disappear below the Glockner nappe and are crosscut at depth by the Brenner normal fault (Behrmann, 1988;Selverstone, 1988).…”

Section: Geological Outlinementioning

confidence: 99%

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Geology of the Brenner Pass-Fortezza transect, Italian Eastern Alps

Schiavo¹,

Piaz

Monopoli³

et al. 2014

Journal of Maps

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We present a 1:30,000 geological map resulting from detailed geostructural surveys carried out along the Italian segment of the design corridor for the Brenner Pass railway base tunnel (BBT), extending from Fortezza (Italy) to Innsbruck (Austria). The map covers the southern part of the Austroalpine-Penninic collisional wedge, the Periadriatic Fault System, associated Oligocene igneous bodies (Periadriatic magmatism) and part of the Southalpine basement. The Penninic Zone in the western Tauern Window is represented by the double domal structure of the Europe-derived Tux and Venediger-Zillertal basement and cover nappe system, capped by the ophiolitic Glockner nappe. The overlying Austroalpine nappe system is here represented by the polymetamorphic Merano-Mules basement and minor cover sheets. The Southern Alps domain includes the Bressanone Granite and pre-granite quartz-phyllites. Four Alpine ductile deformation phases have been recognized, followed by ductile-brittle shear zones, and finally brittle deformations along faults with extensional and strike-slip kinematics. The Quaternary is characterized by glacial deposits, large gravitational mass movements and landslides.

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“…In spite of these, the cross-section shows a bivergent nappe stack that has formed in Cenozoic times. A major thrust fault at the base of the Tauern massif is indicated by reflection seismics ("Sub-Tauern ramp" of [205] and doubles the thickness of the upper crust. The granitic rocks of the Tauern massif show a penetrative ductile Alpine strain [206], which indicates ca.…”

Section: Western and Eastern Alpsmentioning

confidence: 99%

Thick-Skinned and Thin-Skinned Tectonics: A Global Perspective

Pfiffner¹

2017

Preprint

View full text Add to dashboard Cite

This paper gives an overview of the large-scale tectonic styles encountered in orogens worldwide. Thin-skinned and thick-skinned tectonics represent two end member styles recognized in mountain ranges. Both styles are encountered in former passive margins of continental plates. Thick-skinned style including the entire crust and possibly the lithospheric mantle are associated with intracontinental contraction. Delamination of subducting continental crust and horizontal protrusion of upper plate crust into the opening gap occurs in the terminal stage of continent-continent collision. Continental crust thinned prior to contraction is likely to develop relatively thin thrust sheets of crystalline basement. A true thin-skinned type requires a detachment layer of sufficient thickness. Thickness of the décollement layer as well as the mechanical contrast between décollement layer and detached cover control the style of folding and thrusting within the detached cover units. In subduction-related orogens, thin-and thick-skinned deformation may occur several hundreds of kilometers from the plate contact zone. Basin inversion resulting from horizontal contraction may lead to the formation of basement uplifts by the combined reactivation of pre-existing normal faults and initiation of new reverse faults. In most orogens thick-skinned and thin-skinned structures both occur and evolve with a pattern where nappe stacking propagates outward and downward.

show abstract

A crustal-scale cross-section through the Tauern Window (eastern Alps) from geophysical and geological data

Cited by 35 publications

References 26 publications

Thick-Skinned and Thin-Skinned Tectonics: A Global Perspective

Thick-Skinned and Thin-Skinned Tectonics: A Global Perspective

Geology of the Brenner Pass-Fortezza transect, Italian Eastern Alps

Thick-Skinned and Thin-Skinned Tectonics: A Global Perspective

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