Low-frequency 3-D seismic survey of upper crustal magmatic intrusions in the northeastern Pannonian basin of Hungary

Z. Hajnal, E. Hegedűs, G. Randy Keller, Tamás Fancsik, Attila Cs Kovács, Róbert Csabafi

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

A specially designed 700-km2 grid survey, deploying 1000 regularly distributed low-frequency seismic recording systems, successfully investigated one of the most complex geologic environments of the Pannonian basin. The wide-angle signals penetrated through over 1000 m of multi-phase igneous lithology and recognized, for the first time, the underlying enigmatic Permian to Early Triassic basement rocks. Tomographic inversion of the first arrival grid data resulted in determination of an accurate three-dimensional (3-D) velocity field, to a depth of 4 km. The anomalous changes of the spatial velocity data outline the regional extent of the Late Miocene magmatic intrusions, which are covered by over 2000 m of Mid-Miocene to Pleistocene clastics. Complex relationship was found between the surface potential data and the intrusive bodies. This multi-faceted geophysical data analysis established a functional technique for mapping a subsurface with intricate acoustic and structural complexity.

Original languageEnglish
Pages (from-to)239-252
Number of pages14
JournalTectonophysics
Volume388
Issue number1-4 SPEC. ISS.
DOIs
Publication statusPublished - Sep 13 2004

Fingerprint

Hungary
seismic survey
intrusion
grids
low frequencies
lithology
basements
Miocene
basin
arrivals
velocity distribution
recording
rocks
inversions
basement rock
acoustics
Permian
Triassic
Pleistocene

Keywords

  • Low frequency
  • Pannonian basin
  • Seismic-potential data synthesis
  • Three-dimensional
  • Tomographic inversion
  • Wide-angle seismic

ASJC Scopus subject areas

  • Earth-Surface Processes
  • Geophysics

Cite this

Low-frequency 3-D seismic survey of upper crustal magmatic intrusions in the northeastern Pannonian basin of Hungary. / Hajnal, Z.; Hegedűs, E.; Keller, G. Randy; Fancsik, Tamás; Kovács, Attila Cs; Csabafi, Róbert.

In: Tectonophysics, Vol. 388, No. 1-4 SPEC. ISS., 13.09.2004, p. 239-252.

Research output: Contribution to journalArticle

Hajnal, Z. ; Hegedűs, E. ; Keller, G. Randy ; Fancsik, Tamás ; Kovács, Attila Cs ; Csabafi, Róbert. / Low-frequency 3-D seismic survey of upper crustal magmatic intrusions in the northeastern Pannonian basin of Hungary. In: Tectonophysics. 2004 ; Vol. 388, No. 1-4 SPEC. ISS. pp. 239-252.
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