Tertiary extension development and extension/compression interplay in the West Carpathian mountain belt

Němčok, Michal; Hók, Jozef; Kovac, Peter; Marko, František; Coward, M. P.; Madarás, Ján; Houghton, Jacqueline; Bezák, Vladimír

doi:10.1016/s0040-1951(98)00016-x

Cited by 28 publications

(8 citation statements)

References 38 publications

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“…This process took place under transtension/ extension tectonic regime with the principal palaeostress compression oriented in the N -S to NE -SW direction. (Marko et al 1991;Fodor 1995;Marko & Kováč 1996;Nemčok et al 1998;Hók et al 1999). Obtained data indicate successive opening of the depocentres generally from the west to the east (Fig.…”

Section: The Neogene Tectonicsmentioning

confidence: 99%

The Alpine tectonic evolution of the Danube Basin and its northern periphery (southwestern Slovakia)

Hók¹,

Kováč²,

Pelech³

et al. 2016

Geologica Carpathica

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Abstract:The tectonic evolution of the pre-Cenozoic basement, as well as the Cenozoic structures within the Danube Basin (DB) and its northern periphery are presented. The lowermost portion of the pre-Cenozoic basement is formed by the Tatricum Unit which was tectonically affected by the subduction of the Vahicum / Penninicum distal continental crust during the Turonian. Tectonically disintegrated Tatricum overlaid the post-Turonian to Lower Eocene sediments that are considered a part of the Vahicum wedge-top basin. These sediments are overthrust with the Fatricum and Hronicum cover nappes. The Danube Basin Transversal Fault (DBTF) oriented along a NW-SE course divided the pre-Neogene basement of the DB into two parts. The southwestern part of the DB pre-Neogene basement is eroded to the crystalline complexes while the Palaeogene and Mesozoic sediments are overlaid by the Neogene deposits on the northeastern side of the DBTF. The DBTF was activated as a dextral fault during the Late Oligocene -Earliest Miocene. During the Early Miocene (Karpatian -Early Badenian) it was active as a normal fault. In the Middle -Late Miocene the dominant tectonic regime with NW -SE oriented extension led to the disintegration of the elevated pre-Neogene basement under the simple and pure shear mechanisms into several NE -SW oriented horst and graben structures with successive subsidence generally from west to east. The extensional tectonics with the perpendicular NE -SW orientation of the S hmin persists in the Danube Basin from the ?Middle Pleistocene to the present.

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Section: The Neogene Tectonicsmentioning

confidence: 99%

The Alpine tectonic evolution of the Danube Basin and its northern periphery (southwestern Slovakia)

Hók¹,

Kováč²,

Pelech³

et al. 2016

Geologica Carpathica

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“…According to current knowledge (e.g. Ratschbacher et al 1991;Csontos et al 1992;Horváth 1993;Kováč et al 1993;Nemčok et al 1998), among the most significant are: (a) escape of crustal fragments from behind the Alps into the space of the closing flysch basin already during the Paleogene and Neogene, (b) oblique collision of these fragments with the European platform, movement on strike-slip faults, (c) origination of an asthenolith due to finishing subduction, (d) thinning of crust as a result of partial melting and assimilation of lower crust, (e) subsequent extension and subsidence, sedimentation and volcanism finishing with basaltic intrusions due to differentiation of mantle material. The basin basement is very inhomogenous, formed by several crustal tectonic units (Fusán et al 1987;Vozár et al 2010).…”

Section: Tectono-geological Interpretation Of Inversion Results and Dmentioning

confidence: 99%

Joint interpretation of gravity and magnetic data in the Kolárovo anomaly region by separation of sources and the inversion method of local corrections

Prutkin¹,

Vajda²,

Bielik³

et al. 2014

Geologica Carpathica

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Abstract:We present a new interpretation of the Kolárovo gravity and magnetic anomalies in the Danube Basin based on an inversion methodology that comprises the following numerical procedures: removal of regional trend, depth-wise separation of signal of sources, approximation of multiple sources by 3D line segments, non-linear inversion based on local corrections resulting in found sources specified as 3D star-convex homogenous bodies and/or 3D contrasting structural contact surfaces. This inversion methodology produces several admissible solutions from the viewpoint of potential field data. These solutions are then studied in terms of their feasibility taking into consideration all available tectono-geological information. By this inversion methodology we interpret here the Kolárovo gravity and magnetic anomalies jointly. Our inversion generates several admissible solutions in terms of the shape, size and location of a basic intrusion into the upper crust, or the shape and depth of the upper/lower crust interface, or an intrusion into the crystalline crust above a rise of the mafic lower crust. Our intrusive bodies lie at depths between 5 and 12 km. Our lower crust elevation rises to 12 km with and 8 km without the accompanying intrusion into the upper crust, respectively. Our solutions are in reasonable agreement with various previous interpretations of the Kolárovo anomaly, but yield a better and more realistic geometrical resolution for the source bodies. These admissible solutions are next discussed in the context of geological and tectonic considerations, mainly in relation to the fault systems.

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“…5). This block is bounded by the Brenner normal fault, the Periadriatic and the SEMP Lines and represents the hypothesized Miocene (possibly up to present day) 'escape' off to the east of the collapsing, gravitationally unstable, over-thickened Austrian Alps (riding above flowing crystalline basement) as a result of the free margin (within the main alpine collisional system) offered by the Carpathian retreat and/or as a result of the northward indenter push of Adria (Ratschbacher et al 1990(Ratschbacher et al , 1991Fodor et al 1998;Nemcok 1998a;Grenerczy et al 2000;Haas et al 2000;Linzer et al 2002;Sperner et al 2002). Note that the role of the mechanism of indenter Adria's push in to East Alps is sometimes cast as a 'chicken-and-egg' question -as is also sometimes done for Anatolia (i.e.…”

Section: Tectonic Block and Microcontinent Motionsmentioning

confidence: 99%

“…(3) Holocene landform flank uplift; and even (4) local reactivation of original Alcalpa against Tisza -Dacia thrust (or oblique wrench) displacement systems along the Mid-Hungarian Line) that is evident on exposed basin margins and seismic reflection profiles, and is further revealed by a present day compressive stress regime that is observed in borehole and other in-situ stress data (Peresson & Decker 1997;Csontos & Nagymarosy 1998;Nemcok 1998a;Bada et al 1999;Fodor et al 2005;Plasienka & Kovac 1999;Bertotti et al 2003;Cloetingh et al 2005a, b;Bada et al 2007;Matenco et al 2007). These studies generally interpret the inversion to be due to the compressive stress regime engendered by the final cessation of back-arc extension to the Carpathians that is concomitant with the corresponding halt of the eastward retreat of the Carpathian subduction zone while the Pannonian region is simultaneously exposed to the continued anti-clockwise rotation and north-NE-directed indentation of the Adriatic microplate (push of Adria) against the (Eastern) Alps and the dextral 'transpressional' inner Dinaride zone (Fig.…”

Section: Basin Inversionmentioning

confidence: 99%

Mediterranean snapshots of accelerated slab retreat: subduction instability in stalled continental collision

Edwards

Grasemann

2009

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This review of Mediterranean geodynamics highlights that the Mediterranean region captures at a fortuitous moment in time, a picture of the fate of foundering, old, cold oceanic lithosphere of limited area due to being landlocked in an all-but-stalled continental collision (Africa with Europe). We synthesize the geological spatial and temporal data for stretched crust as well as the 3D distribution of old abyssal plains and new oceanic lithosphere segments in concert with heat flow, palaeomagnetic data, geodetic velocity data, earthquake hypocentre distributions and seismic tomography. We use three Mediterranean subduction system settings (the western Mediterranean, the Hellenic and the Pannonian–Carpathian) that nicely reflect the slab instability and retreat. We assume that mantle slab dynamics best explains the observations. The dispersal and segmentation of the foundering landlocked ocean results in a series of discontinuous subduction zones whose individual lengths gradually diminish while retreat accelerates as slab progressively narrow and tear (i.e. along-strike laterally-propagating slab break-off) due to imminent total consumption of available oceanic lithosphere. We suggest that the Mediterranean region offers a lucid series of snapshots of accelerated slab retreat that, additionally, is globally unique as the only present day example of what we term intra-collisional landlocked ocean subduction.

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Tertiary extension development and extension/compression interplay in the West Carpathian mountain belt

Cited by 28 publications

References 38 publications

The Alpine tectonic evolution of the Danube Basin and its northern periphery (southwestern Slovakia)

The Alpine tectonic evolution of the Danube Basin and its northern periphery (southwestern Slovakia)

Joint interpretation of gravity and magnetic data in the Kolárovo anomaly region by separation of sources and the inversion method of local corrections

Mediterranean snapshots of accelerated slab retreat: subduction instability in stalled continental collision

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