The Tertiary dynamics of the northern Eastern Alps (Austria): changing palaeostresses in a collisional plate boundary

Peresson, Herwig; Decker, Kurt

doi:10.1016/s0040-1951(96)00255-7

Cited by 113 publications

(70 citation statements)

References 24 publications

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“…Five stages of deformation (D1-D5) are identified in the Hochschwab massif (see unpublished report by Decker in Table 1), the most important being (1) NW-directed dextral transpressional stacking of nappes during the Late-Early Cretaceous to late Eocene, (2) N-directed thrusting (EoceneOligocene) and (3) eastward lateral extrusion of crustal wedges along (E)NE-striking sinistral strike-slip faults such as the SEMP (Salzach-Ennstal-Mariazell-Puchberg fault zone) during the Miocene (Decker et al 1994;Linzer et al 1995) The investigated fault zones are all part of the SEMP, which is 400 km long and crosses all Austroalpine tectonostratigraphic units (Decker et al 1994;Linzer et al 1995Linzer et al , 2002Peresson and Decker 1997;Ratschbacher et al 1991), forming the lateral ramp of the eastward extrusion of the Eastern Alps in the course of the post-collisional exhumation of the Tauern window (Linzer et al 2002) (Fig. 1a).…”

Section: Study Area Geological Settingmentioning

confidence: 99%

Hydrogeological properties of fault zones in a karstified carbonate aquifer (Northern Calcareous Alps, Austria)

2016

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This study presents a comparative, field-based hydrogeological characterization of exhumed, inactive fault zones in low-porosity Triassic dolostones and limestones of the Hochschwab massif, a carbonate unit of high economic importance supplying 60 % of the drinking water of Austria's capital, Vienna. Cataclastic rocks and sheared, strongly cemented breccias form low-permeability (<1 mD) domains along faults. Fractured rocks with fracture densities varying by a factor of 10 and fracture porosities varying by a factor of 3, and dilation breccias with average porosities >3 % and permeabilities >1,000 mD form high-permeability domains. With respect to fault-zone architecture and rock content, which is demonstrated to be different for dolostone and limestone, four types of faults are presented. Faults with single-stranded minor fault cores, faults with single-stranded permeable fault cores, and faults with multiple-stranded fault cores are seen as conduits. Faults with single-stranded impermeable fault cores are seen as conduit-barrier systems. Karstic carbonate dissolution occurs along fault cores in limestones and, to a lesser degree, dolostones and creates superposed highpermeability conduits. On a regional scale, faults of a particular deformation event have to be viewed as forming a network of flow conduits directing recharge more or less rapidly towards the water table and the springs. Sections of impermeable fault cores only very locally have the potential to create barriers.

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Section: Study Area Geological Settingmentioning

confidence: 99%

Hydrogeological properties of fault zones in a karstified carbonate aquifer (Northern Calcareous Alps, Austria)

2016

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“…1. Location of the study area and sample localities (white circles; for the coordinates see the Appendix) within the Eastern Alps (simplified geological map and section after Pestal et al 2005and Heinisch et al 1995 Wang & Neubauer 1998;Neubauer et al 1999;Cole et al 2007;Rosenberg & Schneider 2008), active since the Late Eocene/Oligocene (Urbanek et al 2002) during exhumation of the Penninic Tauern Window in a sinistral wrench corridor (Ratschbacher et al 1989;Peresson & Decker 1997;Reinecker & Lenhardt 1999;Frisch et al 2000). This brittle to ductile (Cole et al 2007;Rosenberg & Schneider 2008) fault zone separates the low-grade metamorphic (Hoinkes et al 1999) rocks of the central Western Greywacke Zone from formerly deeply buried greenschist-to eclogite-grade metamorphic rocks of the Penninic Tauern Window.…”

Section: Geological Settingmentioning

confidence: 99%

Alpine metamorphism in the central segment of the Western Greywacke Zone (Eastern Alps)

Rantitsch¹,

Judik²

2009

Geologica Carpathica

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Abstract:The metamorphic pattern of the central Western Greywacke Zone (Austroalpine, Eastern Alps) was investigated by organic matter reflectance, Raman spectroscopy on organic matter and clay mineralogical methods. Raman data map a 10 km wide thermal aureole along the contact zone of the Greywacke Zone to the Penninic Tauern Window. The estimated maximum temperatures of 400 °C to 200 °C decrease from South to North, that is from the contact to the uppermost parts of the Greywacke Zone. This pattern is explained by an Oligocene to Miocene thermal pulse, related to the rapid exhumation of formerly deeply buried rocks of the Penninic unit. During this event, advective heat transport and circulating fluids overprinted the Cretaceous higher anchi-to lower epizonal metamorphic pattern of the central Western Greywacke Zone.

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“…The paleostress development of the Alps and Outer Western Carpathians is discussed by more authors (e.g. Zuchiewicz 1994; Peresson & Decker 1997;Márton & Fodor 2003). On the basis of the available data, the direction of maximum horizontal compressional deformation in the Polish part of the Outer Western Carpathian belt is roughly N-S, whereas in the western part of the zone of collision with the Bohemian Massif, this direction has rotated to an approximately NW-SE direction (Fig.…”

Section: In the Region Of The Karviná Subbasin Neither Direct Nor Inmentioning

confidence: 96%

The impact of Outer Western Carpathian nappe tectonics on the recent stress-strain state in the Upper Silesian Coal Basin (Moravosilesian Zone, Bohemian Massif)

Ptáček¹,

Grygar²,

Koníček³

et al. 2012

Geologica Carpathica

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Abstract:The Upper Silesian Coal Basin (USCB) represents a typical foreland basin developed during the Variscan orogenic phase of the Late Carboniferous. Later, during the Alpine orogeny the Outer Western Carpathian nappes were thrust over the post-Variscan foreland, to which the USCB belongs. Due to this complex tectonic history, redistribution of stress fields occurred in the post-Variscan basement. Furthermore, post-Variscan denudation processes probably also contributed to recent stress regimes. Nevertheless, the impact of the West Carpathian orogeny can be regarded as the most significant influence. The in-situ measurement of recent stress fields in deposits of the Karviná Formation of the USCB and structural analysis of the Czech part of the USCB, has focused on verification of the structure and stress interference of the Carpathian nappes and post-Variscan foreland basement. In the southernmost part of the Karviná Subbasin, the easternmost domain of the USCB, situated in the apical zone of the Variscan accretionary wedge, hydrofracturing and overcoring stress measurements have been recorded in coal seams from selected coal mines. The data have been supplemented by interpretation of focal mechanism solutions of mine induced seismic events. Measurements of recent in-situ stress regimes in the Karviná Formation of the USCB indicate a dominant generally NW-SE orientation of the maximum horizontal compression stress. The results demonstrate that the stress-strain regime in the Karviná Formation in the Variscan Upper Carboniferous basement is significantly influenced by the stress field along the Outer Western Carpathian nappes front. Besides improving our understanding of recent regional stress fields within an area of mutual structural-tectonic interference by both the Variscan and Alpine orogenies, the measured data may contribute to more optimal and safer mining activities in the coal basin.

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The Tertiary dynamics of the northern Eastern Alps (Austria): changing palaeostresses in a collisional plate boundary

Cited by 113 publications

References 24 publications

Hydrogeological properties of fault zones in a karstified carbonate aquifer (Northern Calcareous Alps, Austria)

Hydrogeological properties of fault zones in a karstified carbonate aquifer (Northern Calcareous Alps, Austria)

Alpine metamorphism in the central segment of the Western Greywacke Zone (Eastern Alps)

The impact of Outer Western Carpathian nappe tectonics on the recent stress-strain state in the Upper Silesian Coal Basin (Moravosilesian Zone, Bohemian Massif)

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