Crustal-scale extension in the central Pannonian basin

Hajnal, Z.; Reilkoff, B.; Posgay, K.; Hegedűs, E.; Takács, E.; Asudeh, I.; Mueller, St.; Ansorge, Jörg; Deiaco, R.

doi:10.1016/s0040-1951(96)00126-6

Cited by 16 publications

(9 citation statements)

References 18 publications

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“…The special double-reflections recognized for SP24170 in CEL04 may be further discussed in the light of the results of Hajnal et al (1996) who concluded that both the LAB (lithosphereasthenosphere boundary) and the Moho are considerably elevated beneath the area (Posgay et al, 1995). The layering at the Moho depth may be also interpreted as a result of basaltic underplating.…”

Section: Geological Interpretation Of the Crust And Uppermost Mantlementioning

confidence: 85%

Crustal structure of the Western Carpathians and Pannonian Basin: Seismic models from CELEBRATION 2000 data and geological implications

Janik

Grad

Guterch

et al. 2011

Journal of Geodynamics

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Section: Geological Interpretation Of the Crust And Uppermost Mantlementioning

confidence: 85%

Crustal structure of the Western Carpathians and Pannonian Basin: Seismic models from CELEBRATION 2000 data and geological implications

Janik

Grad

Guterch

et al. 2011

Journal of Geodynamics

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“…The Pannonian Basin in Hungary was explored by deep reflection seismic profiling during the Pannonian Geotraverse (Posgay et al 1996). Crustal structures indicating extensional processes of the Pannonian basin were described by Hajnal et al (1996). In former Yugoslavia nine deep seismic refraction/wide‐angle reflection profiles were recorded during the years 1964–1983 (Dragašević et al 1990).…”

Section: Tectonic Setting and Seismic Exploration Of The Eastern Alpsmentioning

confidence: 99%

Application of stacking and inversion techniques to three-dimensional wide-angle reflection and refraction seismic data of the Eastern Alps

Behm¹,

Brückl²,

Chwatal³

et al. 2007

Geophysical Journal International

131

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SUMMARY We present new methods for the interpretation of 3‐D seismic wide‐angle reflection and refraction data with application to data acquired during the experiments CELEBRATION, 2000 and ALP 2002 in the area of the Eastern Alps and their transition to the surrounding tectonic provinces (Bohemian Massif, Carpathians, Pannonian domain, Dinarides). Data was acquired on a net of arbitrarily oriented seismic lines by simultaneous recording on all lines of seismic waves from the shots, which allows 2‐D and 3‐D interpretations. Much (80%) of the data set consists of crossline traces. Low signal to noise (S/N) ratio in the area of the young orogens decreases the quality of travel time picks. In these seismically heterogeneous areas it is difficult to assign clearly defined arrivals to the seismic phases, in particular on crossline record sections. In order to enhance the S/N ratio, signal detection and stacking techniques have been applied to enhance the Pg‐, Pn‐ and PmP phases. Further, inversion methods have been developed for the interpretation of WAR/R‐data, based on automated 1‐D inversion (Pg) and the application of the delay time concept (Pn). The results include a 3‐D velocity model of the crust based on Pg waves, time and depth maps of the Moho and a Pn‐velocity map. The models based on stacked data are robust and provide a larger coverage, than models based on travel time picks from single‐fold (unstacked) traces, but have relatively low resolution, especially near the surface. They were used as the basis for constructing models with improved resolution by the inversion of picks from single‐fold data. The results correlate well with geological structures and show new prominent features in the Eastern Alps area and their surrounds. The velocity distribution in the crust has strong lateral variations and the Moho in the investigation area appears to be fragmented into three parts.

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“…Data of seismostratigraphy and drillcores convincingly demonstrate that many faults involving the entire section of the sedimentary cover in inner basins of the Pannonian region can be classified as listric normal faults, which was noted for the first time by Royden and Sclater [1981]. Moreover, there is evidence indicating that such faults not only penetrate the pre-Pannonian folded basement throughout its thickness but also reach the base of the solid crust ( Figure 13) [Hajnal et al, 1996;Posgay and Szentgyorgi, 1991]. The presence of such faults is evidence that troughs developed under conditions of lithosphere extension.…”

Section: Main Characteristics Of the Pannonian Basin Neotectonicsmentioning

confidence: 73%

Problems of the Pannonian Basin geodynamics

Grachev¹,

Николаев²

2002

Russ. J. Earth Sci.

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Joint analysis of geological-geophysical data and petrogeochemical characteristics of neotectonic volcanism revealed a close relationship between the neotectonic pattern of the Pannonian basin and deep structure. As shown in this work, main features of the recent deep structure such as the thin crust, hotter lithosphere and lower P wave velocities can be accounted for solely in terms of the model of a mantle floating-up diapir that stretches the lithosphere. Such a tectonic regime is known as synorogenic rifting. The synorogenic rifting model is largely based on the evidence of alkali-basaltic volcanism developing since the beginning of the Pannonian Age (11-10.5 Ma), after the subduction had stopped and the previously widespread calc-alkaline magmatism had localized within the Transcarpathian region. The chemistry of basalts in the Pannonian basin is characterized by concentrations of major, rare and rare-earth elements fully consistent with petrogeochemical features of continental rift basalts. Ultrabasic xenoliths in Pannonian basin basalts belonging to the spinel lherzolite facies also coincide in composition with mantle xenoliths usually present in volcanics of rift zones. The data of this work indicate that evolutionary models of the Pannonian basin based on a passive response of the lithosphere to external factors are invalid. The preliminary results of geodynamic zoning presented in the paper suggest that such processing of the geological-geophysical database is promising, because it enables the identification of individual lithospheric blocks having specific features within a given geostructural province (differing in the relationships between geological-geophysical parameters). This approach provides deeper insights into the nature of the seismic activity in the Pannonian basin that has not been clearly understood as yet.

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Crustal-scale extension in the central Pannonian basin

Cited by 16 publications

References 18 publications

Crustal structure of the Western Carpathians and Pannonian Basin: Seismic models from CELEBRATION 2000 data and geological implications

Crustal structure of the Western Carpathians and Pannonian Basin: Seismic models from CELEBRATION 2000 data and geological implications

Application of stacking and inversion techniques to three-dimensional wide-angle reflection and refraction seismic data of the Eastern Alps

Problems of the Pannonian Basin geodynamics

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