Seismic anisotropy and deformation patterns in upper mantle xenoliths from the central Carpathian–Pannonian region: Asthenospheric flow as a driving force for Cenozoic extension and extrusion?

Kovàcs, István; Falus, Gy.; Stuart, G. W.; Hidas, Károly; Szabó, Csaba; Flower, Martin F. J.; Hegedűs, E.; Posgay, K.; Zilahi-Sebess, László

doi:10.1016/j.tecto.2011.10.022

Cited by 69 publications

(98 citation statements)

References 78 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Kovács et al 2012), the calculated 301 seismic properties of the average mantle beneath Bárna-Nagykő (Fig. 4 and Table 1) was used to 302 estimate the thickness of the anisotropic layer.…”

Section: Seismic Anisotropy 291mentioning

confidence: 99%

“…Therefore, the majority of the delay time 24 accumulates in the sublithospheric mantle. However, it is still in question whether a single anisotropic 25 layer, represented by the studied xenoliths, is responsible for the observed SKS anisotropy, as it is 26 assumed beneath the Bakony-Balaton Highland Volcanic Field (Kovács et al 2012), or the sublithospheric 27 mantle has different layers. 28…”

mentioning

confidence: 99%

“…Volcanic Field (BBHVF), in order to see if there is any resemblance between the NGVF and the BBHVF, 330 which is the closest area where similar studies has been carried out (Kovács et al 2012), and the BBHVF 331 is also the part of the same tectonic unit (ALCAPA). The thickness of the anisotropic layer beneath the 332 BBHVF was recalculated by using equation (1) based on the A-type xenolith reported by Kovács et al 333 (2012), considering the five end-member orientations described above.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Constraints on the thickness and seismic properties of the lithosphere in an extensional setting (Nógrád-Gömör Volcanic Field, Northern Pannonian Basin)

et al. 2015

View full text Add to dashboard Cite

Section: Seismic Anisotropy 291mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

Constraints on the thickness and seismic properties of the lithosphere in an extensional setting (Nógrád-Gömör Volcanic Field, Northern Pannonian Basin)

et al. 2015

View full text Add to dashboard Cite

“…Following the closure of these oceanic domains the Alcapa and Tisza-Dacia units gradually occupied the Carpathian Embayment from the late Oligocene until the late Miocene (11 Ma; Kázmér and Kovács 1985;Fodor et al 1999). The extrusion of these blocks overlapped with the intensive extension of the lithosphere in the central part of the CPR of which exact driving mechanism is still disputed (Huismans et al 2001;Horváth et al 2006;Kovács et al 2012;Harangi et al 2015;Balázs et al 2016). Alcapa and TiszaDacia eventually collided with the stable European platform in the late Miocene.…”

Section: Research Aims and Objectives Of The Hungarian Alparray Projectmentioning

confidence: 99%

“…are only present in the crust or could be traced down all the way to the asthenosphere, cross-cutting the entire continental lithospheric mantle (c.f. Tari et al 1999;Horváth et al 2015;Kovács et al 2007Kovács et al , 2012. This challenging topic could be resolved if horizontal heterogeneities are mapped in the lithosphere as tectonic units are likely expected to show coherent images if separated by deep fault zones (i.e.…”

Section: Research Aims and Objectives Of The Hungarian Alparray Projectmentioning

confidence: 99%

AlpArray in Hungary: temporary and permanent seismological networks in the transition zone between the Eastern Alps and the Pannonian basin

et al. 2018

View full text Add to dashboard Cite

In the last few decades dense large-scale seismic networks showed their importance in studying the structure of the lithosphere and the upper mantle. The better understanding of the Apennines-Alps-Carpathian-Dinarides system is the main target of the AlpArray European international initiative in which more than 50 institutes are involved. The core of AlpArray is the AlpArray Seismic Network (AASN). With its $ 600 broadband seismic stations ( $ 280 of which are temporary) the AASN is, so far, the largest passive seismic experiment in Europe. The MTA CSFK Geodetic and Geophysical Institute, as a Core Member of the AlpArray project, contributes to the AlpArray Seismic Network with its entire permanent network as well as with 11 temporary broadband seismic stations deployed in Western Hungary. Three additional station equipment were provided by the Swiss-AlpArray SINERGIA program. The average station distance together with the permanent stations is around 40 km in the area of interest. The temporary network has been installed between December 2015 and July 2016 and the planned operation period is 3 years. In this paper we describe the characteristics of the 29 permanent and temporary stations, introducing not only the equipment, but the location, housing and geological setting, as well. We present median power spectral density curves in order to characterise the noise conditions at each station.

show abstract

Mantle dynamics in the Mediterranean

et al. 2014

View full text Add to dashboard Cite

The Mediterranean offers a unique opportunity to study the driving forces of tectonic deformation within a complex mobile belt. Lithospheric dynamics are affected by slab rollback and collision of two large, slowly moving plates, forcing fragments of continental and oceanic lithosphere to interact. This paper reviews the rich and growing set of constraints from geological reconstructions, geodetic data, and crustal and upper mantle heterogeneity imaged by structural seismology. We proceed to discuss a conceptual and quantitative framework for the causes of surface deformation. Exploring existing and newly developed tectonic and numerical geodynamic models, we illustrate the role of mantle convection on surface geology. A coherent picture emerges which can be outlined by two, almost symmetric, upper mantle convection cells. The downwellings are found in the center of the Mediterranean and are associated with the descent of the Tyrrhenian and the Hellenic slabs. During plate convergence, these slabs migrated backward with respect to the Eurasian upper plate, inducing a return flow of the asthenosphere from the back-arc regions toward the subduction zones. This flow can be found at large distance from the subduction zones and is at present expressed in two upwellings beneath Anatolia and eastern Iberia. This convection system provides an explanation for the general pattern of seismic anisotropy in the Mediterranean, first-order Anatolia, and Adria microplate kinematics and may contribute to the high elevation of scarcely deformed areas such as Anatolia and eastern Iberia. More generally, the Mediterranean is an illustration of how upper mantle, small-scale convection leads to intraplate deformation and complex plate boundary reconfiguration at the westernmost terminus of the Tethyan collision.

show abstract

Seismic anisotropy and deformation patterns in upper mantle xenoliths from the central Carpathian–Pannonian region: Asthenospheric flow as a driving force for Cenozoic extension and extrusion?

Cited by 69 publications

References 78 publications

Constraints on the thickness and seismic properties of the lithosphere in an extensional setting (Nógrád-Gömör Volcanic Field, Northern Pannonian Basin)

Constraints on the thickness and seismic properties of the lithosphere in an extensional setting (Nógrád-Gömör Volcanic Field, Northern Pannonian Basin)

AlpArray in Hungary: temporary and permanent seismological networks in the transition zone between the Eastern Alps and the Pannonian basin

Mantle dynamics in the Mediterranean

Contact Info

Product

Resources

About