Geochronology of Neogene magmatism in the Carpathian arc and intra-Carpathian area

Z. Pécskay, Jaroslav Lexa, Alexandru Szakács, Ioan Seghedi, K. Balogh, Vlastimil Konečný, Tibor Zelenka, Marinel Kovacs, Teréz Póka, Alexandrina Fülöp, E. Márton, Cristian Panaiotu, Vladica Cvetković

Research output: Contribution to journalArticle

153 Citations (Scopus)

Abstract

Neogene to Quaternary volcanism in the Carpathian-Pannonian Region was related to the youngest evolutionary stage of the Carpathian arc and the intra-Carpathian area, with subduction, extension and asthenospheric upwelling as the main driving mechanisms. Volcanism occurred between 21 and 0.1 Ma, and showed a distinct migration in time from West to East. Several groups of calc-alkaline magmatic rock-types (felsic, intermediate and mafic varieties) have been distinguished, and several minor alkalic types also occur, including shoshonitic, K-trachytic, ultrapotassic and alkali basaltic. On the basis of spatial distribution, relationship to tectonic processes and their chemical composition, the volcanic formations can be divided into: (1) areally distributed felsic calc-alkaline formations related to the initial stages of back-arc extension, (2) areally distributed intermediate calc-alkaline formations related to advanced stages of back-arc extension, (3) "arc-type" andesite volcanic formations with a complex relationship to subduction processes, and (4) alkali basaltic magmatism related to post-convergence extension, Petrological data and geotectonic reconstructions, which involve these magmatic groups, place significant constraints on geodynamic models of the Carpathian-Pannonian area. Subduction and back-arc extension were not contemporaneous across the whole Carpathian arc and intra-Carpathian area. Instead, three major geographical segments can be defined (Western, Central, Eastern segments) with a progressively younger timing of subduction roll-back and back-arc extension: 21-11 Ma, 16-9 Ma, 14-0 Ma, respectively. Short-lived subduction-related volcanic activity can be interpreted as either an indication of a limited width of subducted crust (not greater than 200 km) or an indication of detachment of the sinking slab. Interpretation of the areally distributed felsic and intermediate calc-alkaline volcanic formations are considered as being initiated by back-arc extension induced by diapiric uprise of "fertile" asthenospheric material.

Original languageEnglish
Pages (from-to)511-530
Number of pages20
JournalGeologica Carpathica
Volume57
Issue number6
Publication statusPublished - Dec 2006

Fingerprint

geochronology
Neogene
magmatism
subduction
volcanism
andesite
geodynamics
slab
upwelling
chemical composition
crust
spatial distribution
tectonics
rock

Keywords

  • Carpathians
  • Geodynamics
  • Intra-Carpathian areas
  • Radiometric dating
  • Space-time evolution
  • Volcanism

ASJC Scopus subject areas

  • Earth and Planetary Sciences (miscellaneous)

Cite this

Pécskay, Z., Lexa, J., Szakács, A., Seghedi, I., Balogh, K., Konečný, V., ... Cvetković, V. (2006). Geochronology of Neogene magmatism in the Carpathian arc and intra-Carpathian area. Geologica Carpathica, 57(6), 511-530.

Geochronology of Neogene magmatism in the Carpathian arc and intra-Carpathian area. / Pécskay, Z.; Lexa, Jaroslav; Szakács, Alexandru; Seghedi, Ioan; Balogh, K.; Konečný, Vlastimil; Zelenka, Tibor; Kovacs, Marinel; Póka, Teréz; Fülöp, Alexandrina; Márton, E.; Panaiotu, Cristian; Cvetković, Vladica.

In: Geologica Carpathica, Vol. 57, No. 6, 12.2006, p. 511-530.

Research output: Contribution to journalArticle

Pécskay, Z, Lexa, J, Szakács, A, Seghedi, I, Balogh, K, Konečný, V, Zelenka, T, Kovacs, M, Póka, T, Fülöp, A, Márton, E, Panaiotu, C & Cvetković, V 2006, 'Geochronology of Neogene magmatism in the Carpathian arc and intra-Carpathian area', Geologica Carpathica, vol. 57, no. 6, pp. 511-530.
Pécskay, Z. ; Lexa, Jaroslav ; Szakács, Alexandru ; Seghedi, Ioan ; Balogh, K. ; Konečný, Vlastimil ; Zelenka, Tibor ; Kovacs, Marinel ; Póka, Teréz ; Fülöp, Alexandrina ; Márton, E. ; Panaiotu, Cristian ; Cvetković, Vladica. / Geochronology of Neogene magmatism in the Carpathian arc and intra-Carpathian area. In: Geologica Carpathica. 2006 ; Vol. 57, No. 6. pp. 511-530.
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