“…First, horizontal decoupling beneath the Tauern Window area probably localized at or just above the tip of the crustal wedge, facilitating the preservation of the pre-Miocene, S-dipping European Moho below this wedge as imaged in the TRANSALP section (Kummerow et al 2004;Lüschen et al 2004Lüschen et al , 2006. Furthermore, it allowed the overlying AlCaPa orogenic crust to extrude laterally to the east, subperpendicular to the direction of convergence and indentation (Oldow et al 1990).…”
Section: Kinematics Of Adriatic Subduction and Crustal Indentation Inmentioning
“…First, horizontal decoupling beneath the Tauern Window area probably localized at or just above the tip of the crustal wedge, facilitating the preservation of the pre-Miocene, S-dipping European Moho below this wedge as imaged in the TRANSALP section (Kummerow et al 2004;Lüschen et al 2004Lüschen et al , 2006. Furthermore, it allowed the overlying AlCaPa orogenic crust to extrude laterally to the east, subperpendicular to the direction of convergence and indentation (Oldow et al 1990).…”
Section: Kinematics Of Adriatic Subduction and Crustal Indentation Inmentioning
“…Higher up in the section, the former plate boundary was deformed by the indentation of lower crust of the Adriatic margin into the European upper crust. The Eastern Alps have recently been explored by reflection seismics in the TRANSALP project [192][193][194] and complemented by earthquake tomography ( [137] for the crustal structure, [191] for the lithosphere structure). The cross-section shown in Figure 21B is located 120 km east of the TRANSALP traverse.…”
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.
We study the coupling between crust and mantle in a convergent regime, by comparing measures of upper mantle deformation with indicators of crustal deformation. We use shear-wave splitting parameters, in particular the orientation of fast axes in the upper mantle measured from data recorded at 8 broadband stations located within the Tauern
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