Genesis of the neogene to quaternary volcanism in the Carpathian-Pannonian region

Role of subduction, extension, and mantle plume

S. Harangi, László Lenkey

Research output: Contribution to journalArticle

83 Citations (Scopus)

Abstract

Neogene to Quaternary volcanism of the Carpathian-Pannonian region is part of the extensive volcanic activity in the Mediterranean and surrounding regions. Using the spatial and temporal distribution of the magmatic rocks, their major-and traceelement features, and Sr-Nd-Pb isotope characteristics, we suggest that lithospheric extension in the Pannonian Basin had a major role in the generation of the magmas. Dehydration of subducting slab should have resulted in thorough metasomatism in the mantle wedge during Cretaceous to early Miocene that would have lowered the melting temperature, therefore playing an indirect role in the generation of magmas later on. Mixing between mantle-derived magmas and lower-crustal melts was an important process at the first stage of the silicic and calc-alkaline magmatism in the Northern Pannonian Basin. However, the crustal component gradually decreased with time, which is consistent with magmatic activity in a continuously thinning continental plate. Calc-alkaline volcanism along the Eastern Carpathians was mostly postcollisional and could have been related to slab break-off processes. However, the fairly young (

Original languageEnglish
Pages (from-to)67-92
Number of pages26
JournalSpecial Paper of the Geological Society of America
Volume418
DOIs
Publication statusPublished - 2007

Fingerprint

mantle plume
Neogene
volcanism
slab
subduction
mantle
metasomatism
basin
dehydration
temporal distribution
thinning
magmatism
melting
Miocene
melt
isotope
spatial distribution
Cretaceous
rock
temperature

Keywords

  • Carpathian-Pannonian region
  • Extension
  • Mantle plume
  • Petrogenesis
  • Subduction

ASJC Scopus subject areas

  • Geology

Cite this

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